css3实现椭圆轨迹旋转
实现效果
X轴Y轴在一个矩形内移动
做斜线运动
1 .ball { 2 position: absolute; 3 animation: 4 animX 2s linear infinite alternate, 5 animY 2s linear infinite alternate 6 } 7 @keyframes animX{ 8 0% {left: 0px;} 9 100% {left: 500px;} 10 } 11 @keyframes animY{ 12 0% {top: 0px;} 13 100% {top: 300px;} 14 } 
设置动画延时
设置Y轴延时为动画时长的一半, 运动轨迹变成菱形
1 .ball { 2 animation: 3 animX 2s linear 0s infinite alternate, 4 animY 2s linear -1s infinite alternate 5 } 
设置三次贝塞尔曲线
1 .ball { 2 animation: 3 animX 2s cubic-bezier(0.36, 0, 0.64, 1) -1s infinite alternate, 4 animY 2s cubic-bezier(0.36, 0, 0.64, 1) 0s infinite alternate 5 } 
缩小放大
为了看起来有立体感添加scale属性,scale动画应该是X轴和Y轴的时间总和
1 .ball1 { 2 animation: 3 animX 2s cubic-bezier(0.36, 0, 0.64, 1) -1s infinite alternate, 4 animY 2s cubic-bezier(0.36, 0, 0.64, 1) 0s infinite alternate, 5 scale 4s cubic-bezier(0.36, 0, 0.64, 1) 0s infinite alternate; 6 } 7 @keyframes scale { 8 9 0% { 10 transform: scale(0.7) 11 } 12 50% { 13 transform: scale(1) 14 } 15 100% { 16 transform: scale(0.7) 17 } 18 } 
来源：博客园
作者：freezemagic
链接：https://www.cnblogs.com/---godzilla---/p/11441222.html