feColorMatrix

该滤镜基于转换矩阵对颜色进行变换。每一像素的颜色值(一个表示为[红,绿,蓝,透明度] 的矢量) 都经过矩阵乘法 (matrix multiplated) 计算出的新颜色。

用法

类别滤镜元素
允许的内容物任意数量、任意排序的下列元素：
<animate>, <set>

示例

<svg width="100%" height="100%" viewBox="0 0 150 360"
 preserveAspectRatio="xMidYMid meet"
 xmlns="http://www.w3.org/2000/svg"
 xmlns:xlink="http://www.w3.org/1999/xlink">
  <text x="70" y="50">Reference</text>
  <g>
    <circle cx="30" cy="30" r="20" fill="blue" fill-opacity="0.5" />
    <circle cx="20" cy="50" r="20" fill="green" fill-opacity="0.5" />
    <circle cx="40" cy="50" r="20" fill="red" fill-opacity="0.5" />
  </g>
  <text x="70" y="120">matrix</text>
  <filter id="colorMeMatrix">
    <feColorMatrix in="SourceGraphic"
      type="matrix"
      values="0 0 0 0 0
              1 1 1 1 0
              0 0 0 0 0
              0 0 0 1 0" />
  </filter>
  <g filter="url(#colorMeMatrix)">
    <circle cx="30" cy="100" r="20" fill="blue"  fill-opacity="0.5" />
    <circle cx="20" cy="120" r="20" fill="green" fill-opacity="0.5" />
    <circle cx="40" cy="120" r="20" fill="red"   fill-opacity="0.5" />
  </g>
  <text x="70" y="190">saturate</text>
  <filter id="colorMeSaturate">
    <feColorMatrix in="SourceGraphic"
      type="saturate"
      values="0.2" />
  </filter>
  <g filter="url(#colorMeSaturate)">
    <circle cx="30" cy="170" r="20" fill="blue" fill-opacity="0.5" />
    <circle cx="20" cy="190" r="20" fill="green" fill-opacity="0.5" />
    <circle cx="40" cy="190" r="20" fill="red" fill-opacity="0.5" />
  </g>
  <text x="70" y="260">hueRotate</text>
  <filter id="colorMeHueRotate">
    <feColorMatrix in="SourceGraphic"
      type="hueRotate"
      values="180" />
  </filter>
  <g filter="url(#colorMeHueRotate)">
    <circle cx="30" cy="240" r="20" fill="blue"  fill-opacity="0.5" />
    <circle cx="20" cy="260" r="20" fill="green" fill-opacity="0.5" />
    <circle cx="40" cy="260" r="20" fill="red"   fill-opacity="0.5" />
  </g>
  <text x="70" y="320">luminanceToAlpha</text>
  <filter id="colorMeLTA">
    <feColorMatrix in="SourceGraphic"
      type="luminanceToAlpha" />
  </filter>
  <g filter="url(#colorMeLTA)">
    <circle cx="30" cy="310" r="20" fill="blue"  fill-opacity="0.5" />
    <circle cx="20" cy="330" r="20" fill="green" fill-opacity="0.5" />
    <circle cx="40" cy="330" r="20" fill="red"   fill-opacity="0.5" />
  </g>
</svg>

该示例渲染效果如下所示：

ScreenshotLive sample

属性

全局属性

专有属性

DOM 接口

该元素实现 SVGFEColorMatrixElement 接口。

参见

文档标签和贡献者