svg动画 - 波浪动画
波浪
<path d="M 96.1271 806.2501 C 96.1271 806.2501 241.441 755.7685 384.5859 755.7685 C 529.8998 755.7685 529.9529 827.65 673.0447 827.65 C 818.4117 827.65 817.7127 738.2097 961.5035 738.2097 C 1106.1715 738.2097 1109.3353 833.6858 1249.9624 833.6858 C 1397.7941 833.6858 1387.886 696.5074 1538.4211 696.5074 C 1676.3448 696.5074 1826.88 745.8917 1826.88 745.8917 L 1826.88 1283.07 L 96.1271 1283.07Z" stroke="blue" stroke-width="3" stroke-opacity="0.3" fill="blue" fill-opacity="0.2"/>
path c 的用法
C x1 y1, x2 y2, x y
c dx1 dy1, dx2 dy2, dx dy
(x,y)表示的是曲线的终点,(x1,y1)是起点的控制点,(x2,y2)是终点的控制点。
曲线数据分析
控制点的y值的大小决定了波峰是由高到低还是由低到高
第一条曲线起点低(806.2501),结点高(755.7685),就是一条向上的曲线(svg使用的是坐标系的第四象限,y值越大,越往下)
对应这一部分
第二条曲线起点高(755.7685),结点低(827.65),就是一条向下的曲线
对应这一部分
把所有的y值对应前移一个位置,可以得到波峰相反的曲线
见下图绿色曲线
<g xmlns="http://www.w3.org/2000/svg" transform="translate(0 -350)"> <path d="M 96.1271 806.2501 C 96.1271 806.2501 241.441 755.7685 384.5859 755.7685 C 529.8998 755.7685 529.9529 827.65 673.0447 827.65 C 818.4117 827.65 817.7127 738.2097 961.5035 738.2097 C 1106.1715 738.2097 1109.3353 833.6858 1249.9624 833.6858 C 1397.7941 833.6858 1387.886 696.5074 1538.4211 696.5074 C 1676.3448 696.5074 1826.88 755.7685 1826.88 755.7685 L 1826.88 1283.07 L 96.1271 1283.07Z" stroke="blue" stroke-width="3" stroke-opacity="0.3" fill="blue" fill-opacity="0.2"> </path> <path d="M 96.1271 755.7685 C 96.1271 755.7685 241.441 827.65 384.5859 827.65 C 529.8998 827.65 529.9529 738.2097 673.0447 738.2097 C 818.4117 738.2097 817.7127 833.6858 961.5035 833.6858 C 1106.1715 833.6858 1109.3353 696.5074 1249.9624 696.5074 C 1397.7941 696.5074 1387.886 745.8917 1538.4211 745.8917 C 1676.3448 745.8917 1826.88 806.2501 1826.88 806.2501 L 1826.88 1283.07 L 96.1271 1283.07Z" stroke="green" stroke-width="3" stroke-opacity="0.3" fill="green" fill-opacity="0.2"> </path> </g>
制作无线循环动画
为了让两个波形可以首尾相连,把第一个曲线的最后一个y值,改为第二个曲线的第一个y值
移动第二条曲线到第一条曲线的结尾处
<g xmlns="http://www.w3.org/2000/svg" transform="translate(0 -350)"> <path d="M 96.1271 806.2501 C 96.1271 806.2501 241.441 755.7685 384.5859 755.7685 C 529.8998 755.7685 529.9529 827.65 673.0447 827.65 C 818.4117 827.65 817.7127 738.2097 961.5035 738.2097 C 1106.1715 738.2097 1109.3353 833.6858 1249.9624 833.6858 C 1397.7941 833.6858 1387.886 696.5074 1538.4211 696.5074 C 1676.3448 696.5074 1826.88 755.7685 1826.88 755.7685 L 1826.88 1283.07 L 96.1271 1283.07Z" stroke="blue" stroke-width="3" stroke-opacity="0.3" fill="blue" fill-opacity="0.2"> </path> <path d="M 96.1271 755.7685 C 96.1271 755.7685 241.441 827.65 384.5859 827.65 C 529.8998 827.65 529.9529 738.2097 673.0447 738.2097 C 818.4117 738.2097 817.7127 833.6858 961.5035 833.6858 C 1106.1715 833.6858 1109.3353 696.5074 1249.9624 696.5074 C 1397.7941 696.5074 1387.886 745.8917 1538.4211 745.8917 C 1676.3448 745.8917 1826.88 806.2501 1826.88 806.2501 L 1826.88 1283.07 L 96.1271 1283.07Z" stroke="green" stroke-width="3" stroke-opacity="0.3" fill="green" fill-opacity="0.2" transform="translate(1730.75 0)"> </path> </g>
利用三条曲线加上动画,可以制作无线循环的动画
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" baseProfile="full" width="1903" height="931" style="position:absolute;left:0;top:0;user-select:none"> <g transform="translate(0 -350)"> <path d="M 96.1271 806.2501 C 96.1271 806.2501 241.441 755.7685 384.5859 755.7685 C 529.8998 755.7685 529.9529 827.65 673.0447 827.65 C 818.4117 827.65 817.7127 738.2097 961.5035 738.2097 C 1106.1715 738.2097 1109.3353 833.6858 1249.9624 833.6858 C 1397.7941 833.6858 1387.886 696.5074 1538.4211 696.5074 C 1676.3448 696.5074 1826.88 755.7685 1826.88 755.7685 L 1826.88 1283.07 L 96.1271 1283.07Z" stroke="blue" stroke-width="3" stroke-opacity="0.3" fill="blue" fill-opacity="0.2"> <animateTransform attributeName="transform" begin="0s" dur="3s" type="translate" values="0 0; 1730.75 0; 3461.5 0" repeatCount="indefinite"/> </path> <path d="M 96.1271 755.7685 C 96.1271 755.7685 241.441 827.65 384.5859 827.65 C 529.8998 827.65 529.9529 738.2097 673.0447 738.2097 C 818.4117 738.2097 817.7127 833.6858 961.5035 833.6858 C 1106.1715 833.6858 1109.3353 696.5074 1249.9624 696.5074 C 1397.7941 696.5074 1387.886 745.8917 1538.4211 745.8917 C 1676.3448 745.8917 1826.88 806.2501 1826.88 806.2501 L 1826.88 1283.07 L 96.1271 1283.07Z" stroke="green" stroke-width="3" stroke-opacity="0.3" fill="green" fill-opacity="0.2"> <animateTransform attributeName="transform" begin="0s" dur="3s" type="translate" values="-1730.75 0; 0 0; 1730.75 0" repeatCount="indefinite"/> </path> <path d="M 96.1271 806.2501 C 96.1271 806.2501 241.441 755.7685 384.5859 755.7685 C 529.8998 755.7685 529.9529 827.65 673.0447 827.65 C 818.4117 827.65 817.7127 738.2097 961.5035 738.2097 C 1106.1715 738.2097 1109.3353 833.6858 1249.9624 833.6858 C 1397.7941 833.6858 1387.886 696.5074 1538.4211 696.5074 C 1676.3448 696.5074 1826.88 755.7685 1826.88 755.7685 L 1826.88 1283.07 L 96.1271 1283.07Z" stroke="blue" stroke-width="3" stroke-opacity="0.3" fill="blue" fill-opacity="0.2"> <animateTransform attributeName="transform" begin="0s" dur="3s" type="translate" values="-3461.5 0; -1730.75 0; 0 0" repeatCount="indefinite"/> </path> </g> </svg>
波浪动画
用两条曲线的路径值,不断切换,可以制作波浪形变的动画
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