SVG 路径 animation 不符合预期

Question

月球需要沿着与地球trajectory id 相同的路径移动。 但它是随机移动的（好像在庆祝 4/20）。

请找到随附的代码。

 .moon { offset-path: path('m159.39 54.867a71.83 20.37 0 0 1-71.83 20.37 71.83 20.37 0 0 1-71.83-20.37 71.83 20.37 0 0 1 71.83-20.37 71.83 20.37 0 0 1 71.83 20.37z'); animation: revolve 10s 1s infinite ease-in-out forwards; } @keyframes revolve { from { offset-distance: 0%; } to { offset-distance: 100%; } }

 <svg width="169.31" height="115.66" viewBox="0 0 169.31 115.66"> <circle cx="87.56" cy="54.867" r="45.855" fill="#ff4141" /> <circle class="moon" cx="18.051" cy="54.867" r="8.092" fill="#ff9900" /> <path id="trajectory" d="m18.051 54.867c1.9043-12.055 45.047-20.455 69.073-20.601 25.048-0.15208 64.422 2.9195 72.266 20.601-6.7091 16.516-45.54 20.472-69.791 20.552-24.814 0.082685-67.739-4.5793-71.548-20.552z" fill="none" stroke-width=".5px" stroke="#000000" /> </svg>

Answer 1

浏览器caniuse.com还不够支持offset-path

要实现月球沿轨迹移动，请考虑使用animateMotion

 <svg width="169.31" height="115.66" viewBox="0 0 169.31 115.66"> <circle cx="87.56" cy="54.867" r="45.855" fill="#ff4141" /> <circle class="moon" cx="0" cy="0" r="8.092" fill="#ff9900" > <animateMotion begin="0s" dur="12s" repeatCount="3" fill="freeze" restart="whenNotActive" >> <mpath xlink:href="#trajectory" /> </animateMotion> </circle> <path id="trajectory" d="m18.051 54.867c1.9043-12.055 45.047-20.455 69.073-20.601 25.048-0.15208 64.422 2.9195 72.266 20.601-6.7091 16.516-45.54 20.472-69.791 20.552-24.814 0.082685-67.739-4.5793-71.548-20.552z" fill="none" stroke-width=".5px" stroke="#000000" /> </svg>