CSS的渐变色背景来实现就好了。
"图片.png" (https://wmprod.oss-cn-shanghai.aliyuncs.com/images/20241210/cd6320b5bde86f6b0865b1224870aa51.png)
// stylus
div
width 100px
height 100px
background conic-gradient(white 30deg, black 30deg)
border-radius 50%
transform rotate(90deg)
"CSS 锥形渐变只能画圆锥吗?conic-gradient
10大应用举例" (https://segmentfault.com/a/1190000043556783)
"conic-gradient() - CSS:层叠样式表 | MDN" (https://link.segmentfault.com/?enc=ubIxaWJKDNGyLblhtSIzzw%3D%3D.QORcgPihOIr2e82cECW3mtnrWpEn3dm2C3LEP%2Fjmlbewiw6u41%2B6TxRhcQE%2Fe8tqe5RmlVznu4ibgOzDeh6zAaFWvNllKRr8EYBy7a2Dz6k%3D)