【发布时间】：2019-05-15 19:53:12
【问题描述】：
我在 Inkscape 中生成了以下 SVG，它有一个 Pacman 图形 (id=pacman) 和一个路径 (id=trajectory)。目标是让人物沿着路径移动。
将图像保存到文件后，我对其进行编辑，在 Pacman-figure 中添加以下部分：
<animateMotion
path="m 39.645298,114.12279 c 24.797657,0.79422 33.02086,-32.601373 61.073142,-32.542731 27.55775,0.05761 37.28264,-38.721653 63.91959,-39.287919"
begin="2s"
dur="10s"
repeatCount="indefinite"
rotate="auto" />
路径坐标从trajectory 对象复制而来。结果，我得到了这个文件：
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- Created with Inkscape (http://www.inkscape.org/) -->
<svg
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:cc="http://creativecommons.org/ns#"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:svg="http://www.w3.org/2000/svg"
xmlns="http://www.w3.org/2000/svg"
xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
width="165.06496mm"
height="104.70296mm"
viewBox="0 0 165.06496 104.70296"
version="1.1"
id="svg8"
inkscape:version="0.92.3 (2405546, 2018-03-11)"
sodipodi:docname="clean-animation.svg">
<defs
id="defs2" />
<sodipodi:namedview
id="base"
pagecolor="#ffffff"
bordercolor="#666666"
borderopacity="1.0"
inkscape:pageopacity="0.0"
inkscape:pageshadow="2"
inkscape:zoom="1.4"
inkscape:cx="343.91864"
inkscape:cy="205.09936"
inkscape:document-units="mm"
inkscape:current-layer="layer1"
showgrid="false"
fit-margin-top="0"
fit-margin-left="0"
fit-margin-right="0"
fit-margin-bottom="0"
inkscape:window-width="1920"
inkscape:window-height="1005"
inkscape:window-x="-9"
inkscape:window-y="1071"
inkscape:window-maximized="1" />
<metadata
id="metadata5">
<rdf:RDF>
<cc:Work
rdf:about="">
<dc:format>image/svg+xml</dc:format>
<dc:type
rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
<dc:title />
</cc:Work>
</rdf:RDF>
</metadata>
<g
inkscape:label="Layer 1"
inkscape:groupmode="layer"
id="layer1"
transform="translate(-19.575883,-23.159755)">
<path
style="opacity:0.597;fill:#ffff00;fill-opacity:1;stroke:#008000;stroke-width:0.26458332;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:0.26458331, 0.52916662999999997;stroke-dashoffset:0;stroke-opacity:0.8"
id="pacman"
sodipodi:type="arc"
sodipodi:cx="33.408691"
sodipodi:cy="115.25672"
sodipodi:rx="13.698855"
sodipodi:ry="12.473214"
sodipodi:start="0"
sodipodi:end="5.9207142"
d="m 47.107547,115.25672 a 13.698855,12.473214 0 0 1 -12.459194,12.42204 13.698855,12.473214 0 0 1 -14.714154,-10.1738 13.698855,12.473214 0 0 1 9.796115,-14.26337 13.698855,12.473214 0 0 1 16.487129,7.59231 l -12.808752,4.42282 z"
inkscape:label="#path815">
<animateMotion
path="m 39.645298,114.12279 c 24.797657,0.79422 33.02086,-32.601373 61.073142,-32.542731 27.55775,0.05761 37.28264,-38.721653 63.91959,-39.287919"
begin="2s"
dur="10s"
repeatCount="indefinite"
rotate="auto" />
</path>
<path
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.26458332px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
d="m 39.645298,114.12279 c 24.797657,0.79422 33.02086,-32.601373 61.073142,-32.542731 27.55775,0.05761 37.28264,-38.721653 63.91959,-39.287919"
id="trajectory"
inkscape:connector-curvature="0"
sodipodi:nodetypes="csc"
inkscape:label="#path817" />
</g>
</svg>
问题是动画不起作用。 2 秒后，如begin="2s" 所定义，黄色图形消失。
我的第一个猜测是坐标以某种方式偏移，并且 Pacman 形状在外太空某处被动画化。但是，如果是这种情况，那么我会在每个循环开始时看到该形状恢复片刻。
当我尝试使用各种教程中的手写 SVG 时，它们会起作用。但是，我自己在 Inkscape 中制作的那些并没有达到预期的效果。
这是什么原因？如何纠正？
【问题讨论】：
-
您需要将您的 pacman 形状置于原点 (0,0) 的中心。或者您需要从 0,0 开始您的运动路径。 pacman 的偏移量与运动路径位置的偏移量相加。这意味着您的 pacman 将不在屏幕底部。