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html+ccs3太阳系行星运转动画_html/css_WEB-ITnose

Jun 24, 2016 am 11:16 AM

做一个太阳系八大行星的运转动画,不包括行星的卫星,所有行星围绕太阳公转,行星采用纯色,暂时没有自转。

效果静态图:

 

动画中包括:太阳及各行星,运行轨道,行星公转动画。

先画好草图,设计好大小和位置,根据公转周期计算好动画执行的时间。

 

html的结构:

一个class为solarsys的div,作为太阳系容器元素,该div的position为relative。

行星轨道和行星都用div,position为absolute。

容器用relative和内部元素采用absolute的定位方式,比较简单的能实现效果,缺点就是大小是固定的。

    <div class="solarsys">        <!--太阳-->        <div class='sun'></div>        <!--水星轨道-->        <div class='mercuryOrbit'></div>        <!--水星-->        <div class='mercury'></div>        <!--金星轨道-->        <div class='venusOrbit'></div>        <!--金星-->        <div class='venus'></div>        <!--地球轨道-->        <div class='earthOrbit'></div>        <!--地球-->        <div class='earth'></div>        <!--火星轨道-->        <div class='marsOrbit'></div>        <!--火星-->        <div class='mars'></div>        <!--木星轨道-->        <div class='jupiterOrbit'></div>        <!--木星-->        <div class='jupiter'></div>        <!--土星轨道-->        <div class='saturnOrbit'></div>        <!--土星-->        <div class='saturn'></div>        <!--天王星轨道-->        <div class='uranusOrbit'></div>        <!--天王星-->        <div class='uranus'></div>        <!--海王星轨道-->        <div class='neptuneOrbit'></div>        <!--海王星-->        <div class='neptune'></div>    </div>
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太阳系容器div的css:

定宽,定高,relative定位,页面内剧中对齐。

        .solarsys{            width: 800px;            height: 800px;;            position: relative;            margin: 0 auto;            background-color: #000000;            padding: 0;            transform: scale(1);        }
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太阳div的css:

按照设计的大小和位置,设定宽高,left,top。

设定颜色。

通过把boder-radius生成50%,把一个正方形变成圆形。

通过box-shadow的4层颜色设置实现太阳光晕。

        .sun {            left:357px;            top:357px;            height: 90px;            width: 90px;            background-color: rgb(248,107,35);            border-radius: 50%;            box-shadow: 5px 5px 10px rgb(248,107,35), -5px -5px 10px rgb(248,107,35), 5px -5px 10px rgb(248,107,35), -5px 5px 10px rgb(248,107,35);            position: absolute;            margin: 0;        }
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行星轨道div的css:

假设是水星轨道。

按照设计的大小和位置,设定宽高,left,top。

背景色透明。

通过把boder-radius生成50%,把一个正方形变成圆形。

boder的类型设成虚线。

boder的颜色设成灰色。

宽度设1。

        .mercuryOrbit {            left:342.5px;            top:342.5px;            height: 115px;            width: 115px;            background-color: transparent;            border-radius: 50%;            border-style: dashed;            border-color: gray;            position: absolute;            border-width: 1px;            margin: 0px;            padding: 0px;        }
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行星div的css:

假设是水星。

按照设计的大小和位置,设定宽高,left,top。

设置颜色。

通过把boder-radius生成50%,把一个正方形变成圆形。

将transfrom-origin设定成当前div的左上角相对于整个太阳系容器的中心点的横向和纵向的偏移量。加上旋转动画后就是围绕着中心点旋转效果。

做一个animation,引用rotate关键帧动画,线性永久执行,这里的执行时长是根据行星的公转周期计算出来。

        .mercury {            left:337.5px;            top:395px;            height: 10px;            width: 10px;            background-color: rgb(166,138,56);            border-radius: 50%;            position: absolute;            transform-origin: 62.5px 5px;            animation: rotate 1.5s infinite linear;        }
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rotate关键帧动画:

逆时针旋转。

        @keyframes rotate {            100% {                transform: rotate(-360deg);            }        }
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基本结构完成。

仅在chrome中测试过。

全部代码:

        <div class="solarsys">        <!--太阳-->        <div class='sun'></div>        <!--水星轨道-->        <div class='mercuryOrbit'></div>        <!--水星-->        <div class='mercury'></div>        <!--金星轨道-->        <div class='venusOrbit'></div>        <!--金星-->        <div class='venus'></div>        <!--地球轨道-->        <div class='earthOrbit'></div>        <!--地球-->        <div class='earth'></div>        <!--火星轨道-->        <div class='marsOrbit'></div>        <!--火星-->        <div class='mars'></div>        <!--木星轨道-->        <div class='jupiterOrbit'></div>        <!--木星-->        <div class='jupiter'></div>        <!--土星轨道-->        <div class='saturnOrbit'></div>        <!--土星-->        <div class='saturn'></div>        <!--天王星轨道-->        <div class='uranusOrbit'></div>        <!--天王星-->        <div class='uranus'></div>        <!--海王星轨道-->        <div class='neptuneOrbit'></div>        <!--海王星-->        <div class='neptune'></div>    </div>
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