圆圈内的 SVG 图像

Question

我想创建一个包含图像的圆圈，我已经尝试使用 pattern 或 filter 但它们都没有给我预期的结果。下面是代码：

<svg id="graph" width="100%" height="400px">

  <!-- filter -->
  <filter id = "born1" x = "0%" y = "0%" width = "100%" height = "100%">
      <feImage xlink:href = "https://cdn3.iconfinder.com/data/icons/people-professions/512/Baby-512.png"/>
  </filter>
  <circle id = "born" class = "medium" cx = "5%" cy = "20%" r = "5%" fill = "white" stroke = "lightblue" stroke-width = "0.5%" filter = "url(#born1)"/>
  
  <!-- pattern -->
  <defs>
    <pattern id="image" x="0" y="0"  height="100%" width="100%">
      <image x="0" y="0" xlink:href="https://cdn3.iconfinder.com/data/icons/people-professions/512/Baby-512.png"></image>
    </pattern>
  </defs>
  <circle id = "sd" class = "medium" cx = "5%" cy = "40%" r = "5%" fill = "white" stroke = "lightblue" stroke-width = "0.5%" fill="url(#image)"/>
</svg>

我的目标是保留圆圈并在其中提供背景图像，例如 CSS attr background-image。

Answer 1

试试这个，

使用patternUnits="userSpaceOnUse" 并设置height="100%" width="100%" 的<image>

 <defs>
    <pattern id="image" x="0" patternUnits="userSpaceOnUse" y="0" height="100%" width="100%">
      <image x="0" y="0" width="500" height="500" xlink:href="http://www.viralnovelty.net/wp-content/uploads/2014/07/121.jpg"></image>
    </pattern>
  </defs>

Demo

Answer 2

模式会起作用。你只需要给<image> 一个大小。与 HTML 不同，SVG 图像的默认宽度和高度为零。

此外，如果您希望图像随圆圈缩放，则应为图案指定 viewBox。

<svg id="graph" width="100%" height="400px">

  <!-- pattern -->
  <defs>
    <pattern id="image" x="0%" y="0%" height="100%" width="100%"
             viewBox="0 0 512 512">
      <image x="0%" y="0%" width="512" height="512" xlink:href="https://cdn3.iconfinder.com/data/icons/people-professions/512/Baby-512.png"></image>
    </pattern>
  </defs>
    
  <circle id="sd" class="medium" cx="5%" cy="40%" r="5%" fill="url(#image)" stroke="lightblue" stroke-width="0.5%" />
</svg>

Answer 3

这是 SVG 的替代品，您实际上并不需要 SVG。您可以使用图像标签本身来实现您的目标。

.avatar {
    vertical-align: middle;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: solid 5px red;
}

<img src="https://connectoricons-prod.azureedge.net/kusto/icon_1.0.1027.1210.png" alt="Avatar" class="avatar">

Refer here for live demo