generated at
SVG:楕円
SVG-terminology

e.svg
<svg width="300px" height="300px" viewBox="-100 -300 1000 800" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" > <g id="R1" transform="translate(200 200)"> <ellipse rx="100" ry="0" fill="red" opacity=".2"> <animateTransform attributeName="transform" type="rotate" dur="7s" from="0" to="360" repeatCount="indefinite"/> <animate attributeName="cx" dur="8s" values="-20; 220; -20" repeatCount="indefinite"/> <animate attributeName="ry" dur="3s" values="10; 60; 10" repeatCount="indefinite"/> </ellipse> </g> <use xlink:href="#R1" transform="rotate(72 390 150)" /> <use xlink:href="#R1" transform="rotate(144 390 150)" /> <use xlink:href="#R1" transform="rotate(216 390 150)" /> <use xlink:href="#R1" transform="rotate(288 390 150)" /> </svg>