我正在尝试确定如何有效地反转这个使用元素上animateMotion
的d
属性的SVG 动画(使用 SMIL)。path
我需要动画围绕形状逆时针运行。
当前动画可以在这里找到,相关代码如下。
document.getElementById("svgobject").pauseAnimations();
<svg version="1.1" id="svgobject" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="451.5px" height="451.5px" viewBox="0 0 461.5 461.5" enable-background="new 0 0 461.5 461.5" xml:space="preserve">
<g>
<path fill="none" stroke="black"
d="M446.85,280.187c0,30.296-24.56,54.854-54.854,54.854H60.239c-30.296,0-54.854-24.559-54.854-54.854l0,0c0-30.296,24.559-54.854,54.854-54.854h331.756C422.29,225.333,446.85,249.891,446.85,280.187L446.85,280.187z"/>
<rect id="rect" x="0" y="0" width="50" height="20" fill="gray" stroke="black" stroke-width="1" transform="translate(-25, -10)">
<animateMotion path="M446.85,280.187c0,30.296-24.56,54.854-54.854,54.854H60.239c-30.296,0-54.854-24.559-54.854-54.854l0,0c0-30.296,24.559-54.854,54.854-54.854h331.756C422.29,225.333,446.85,249.891,446.85,280.187L446.85,280.187z"
begin= "0s" dur="2s" repeatCount="1" rotate="auto" fill="freeze" />
</rect>
</g>
<!--start and stop animation-->
<g onclick="document.getElementById('svgobject').unpauseAnimations()"
transform="translate(160 100)">
<rect width="60" height="30" rx="10" stroke="black" fill-opacity="0.2"/>
<text style="font: 16px Arial Black; fill: white; stroke: black;"
transform="translate(2 20)">START</text>
</g>
<g onclick="document.getElementById('svgobject').pauseAnimations()"
transform="translate(260 100)">
<rect width="60" height="30" rx="10" stroke="black" fill-opacity="0.2"/>
<text style="font: 16px Arial Black; fill: white; stroke: black;"
transform="translate(5 20)">STOP</text>
</g>
</svg>
我知道我可以手动反转 SVG 路径数据命令,包括 moveto (M,m)、lineto (L,l)、curveto (C,c) 等。
考虑到我需要反转的路径坐标的数量(除了这个动画中的那些),我试图确定是否有更有效的方法来做到这一点。