如何从JS制作蒙版SVG动画? [英] How to animate a mask svg from js?

问题描述

如何使用JS遮罩进行动画处理，并遮罩图层和图层遮罩SVG?不使用第三方库?

How to animate using js mask, and masked the layer and layer mask svg? Without using third-party libraries?

<svg id="mask-layer" width="200" height="50"  >
    <defs>
        <mask id="mask">
            <rect width="200" height="50" style="fill: red" />
        </mask>
    </defs>
    <rect id="masked" width="200" height="50" style="fill: red"/>
</svg>  

需要制作可移动的口罩.

Need to make a moving mask.

整天都在寻找答案，而且很拼命.我将很高兴就该主题提出任何建议.

Was looking for an answer all day and is desperate. I will be glad to any advice on the topic.

推荐答案

使用svg掩码，您可以执行以下操作:

Using svg mask, you can do something like this:

(function() {
  var btnMove = document.getElementById("btnMove");
  var rect = document.getElementById("rect");
  var pos = 100;
  btnMove.addEventListener("click", function() {
    rect.setAttribute("x", pos);
    pos += 100;
  });
})();

<svg id="mask-layer" width="200" height="50">
  <defs>
    <mask id="mask" style="stroke: #9595C6;">
      <rect width="200" height="50" />
    </mask>
  </defs>
  <rect id="rect" x="0" y="0" width="200" height="50" style="fill: #9595C6;" />
  <rect x="0" y="0" width="200" height="50" mask="url(#mask)" />
</svg>
<br />
<button id="btnMove">Move</button>

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