java - 如何将 SVG 中的 feGaussianBlur 转换为 JavaFX 中的 GaussianBlur 效果？

Question

我正在开发一个库 ( fxsvgimage )，用于在 JavaFX 中显示 SVG 图像。我正在实现过滤器，我对 feGaussianBlur 过滤器有疑问：是否可以将stdDeviationfeGaussianBlur 的radius参数可靠地转换为 GaussianBlur 效果的参数？

似乎如果我使用相同的值，JavaFX 中的结果比 SVG 中的模糊度要低。例如，如果我使用这个 svg 图像：

<svg id="Layer_1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 156.364 147.239">
   <filter id="blur-shadow">
      <feGaussianBlur stdDeviation="3" />
   </filter>   
   <style>.st0{fill:#DEDEDE;} .st1{fill:#3E295E;} .st2{fill:#FFFFFF;} .st3{fill:#429946;} .st4{fill:#F5EB30;}</style>
   <g filter="url(#blur-shadow)">
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   </g>

</svg>

使用stdDeviation3，我在 SVG 中有这个：

这在 JavaFX 中通过使用相同的值radius：

标签： javasvgjavafx

Answer 1

尝试将半径设置为2 * stdDeviation. 两者之间的关系通常是这样的。希望 JavaFX 也遵循该规则。