如何从图像上切出圆形部分? [英] How to cut a circular part from an image?

问题描述

我正在尝试使用SVG路径剪切图像，但图像似乎不太适合.

I am trying to clip my image with an SVG path but my image doesn't seem to fit in well.

这是我要实现的目标:

This is what I am trying to achieve:

这就是我得到的:

这是我尝试过的代码:

.topbar-chat-img {
  width: 48px;
  height: 48px;
  object-fit: cover;
  clip-path: url(#topbar-img-svg);
}

<img src="https://picsum.photos/200/200?image=1069" class="topbar-chat-img" />

<svg>
                    <defs>
                        <clipPath id="topbar-img-svg">
                            <path class="svg-cls" d="M33,66A33.009,33.009,0,0,1,20.155,2.593,32.99,32.99,0,0,1,66,33a32.691,32.691,0,0,1-3.271,14.341,11.008,11.008,0,0,0-13.148,14.2A32.978,32.978,0,0,1,33,66Z"/>
                        </clipPath>
                    </defs>
                </svg>

我还试图更改vievBox和svg的大小，但无法容纳该图像.

I was also trying to change vievBox and size of svg but i couldn't fit the image.

推荐答案

这是使用SVG的另一种简便方法:

Here is another easier way to do with SVG:

body {
  background:pink;
}

<svg width="200" height="200">
  <defs>
    <mask id="hole">
      <circle r="100" cx="100" cy="100" fill="white"/>
      <circle r="50" cx="180" cy="180" fill="black"/>
    </mask>
  <pattern id="img" patternUnits="userSpaceOnUse" width="200" height="200">
    <image  xlink:href="https://picsum.photos/200/200?image=1069" x="0" y="0" width="200" height="200" />
  </pattern>
  </defs>
  <!-- create a rect, fill it with the image and apply the above mask -->
  <rect fill="url(#img)" width="100%" height="100%" mask="url(#hole)" />
</svg>

您还可以使用CSS和遮罩来做到这一点:

You can also do this using CSS and mask:

body {
  background:pink;
}

img {
  border-radius:50%;
  -webkit-mask:radial-gradient(circle at calc(100% - 20px) calc(100% - 20px),transparent 50px,#fff 51px);
          mask:radial-gradient(circle at calc(100% - 20px) calc(100% - 20px),transparent 50px,#fff 51px);
  
}

<img src="https://picsum.photos/200/200?image=1069" >

可以轻松调整圆的位置的另一种语法:

Another syntax where you can easily adjust the position of the circle:

body {
  background:pink;
}

img {
  border-radius:50%;
  padding:1px;
  -webkit-mask:
    linear-gradient(#fff,#fff),
    radial-gradient(farthest-side,#fff 98%,transparent 100%) 
      bottom -30px right -30px/
      100px 100px no-repeat;
  -webkit-mask-composite:source-out;
  
  mask:
    linear-gradient(#fff,#fff),
    radial-gradient(farthest-side,#fff 98%,transparent 100%) 
      bottom -30px right -30px/
      100px 100px no-repeat;
  mask-composite:exclude;
  transition:1s;
}
img:hover {
  -webkit-mask-position:top -30px right -30px;
          mask-position:top -30px right -30px;
}

<img src="https://picsum.photos/200/200?image=1069" >

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