pointsAtY

SVG 元素
1. A
2. B-C
3. D
  1. <defs>
  2. <desc>
4. E
  1. <ellipse>
5. F
6. G
7. H
  1. <hkern>
8. I
  1. <image>
9. J-L
  1. <line>
  2. <linearGradient>
10. M
11. N-P
12. Q-R
  1. <radialGradient>
  2. <rect>
13. S
  1. <script>
  2. <set>
  3. <stop>
  4. <style>
  5. <svg>
  6. <switch>
  7. <symbol>
14. T
15. U
  1. <use>
16. V-Z
  1. <view>
  2. <vkern>

pointsAtY attribute represents the y location in the coordinate system established by attribute primitiveUnits 在 <filter> element of the point at which the light source is pointing.

You can use this attribute with the following SVG elements:

<feSpotLight>

范例

html, body, svg {
  height: 100%;
}

<svg viewBox="0 0 420 200" xmlns="http://www.w3.org/2000/svg">
  <filter id="lighting1" x="0" y="0" width="100%" height="100%">
    <feDiffuseLighting in="SourceGraphic">
      <feSpotLight x="60" y="60" z="50" pointsAtY="0" />
    </feDiffuseLighting>
  </filter>
  <filter id="lighting2" x="0" y="0" width="100%" height="100%">
    <feDiffuseLighting in="SourceGraphic">
      <feSpotLight x="60" y="60" z="50" pointsAtY="400" />
    </feDiffuseLighting>
  </filter>
  <rect x="0" y="0" width="200" height="200" style="filter: url(#lighting1);" />
  <rect x="0" y="0" width="200" height="200" style="filter: url(#lighting2); transform: translateX(220px);" />
</svg>

用法注意事项

默认值	`0`
值	`<number>`
Animatable	Yes

规范

规范	状态	注释
Filter Effects Module Level 1 The definition of 'pointsAtY' in that specification.	工作草案	无变化
Scalable Vector Graphics (SVG) 1.1 (Second Edition) The definition of 'pointsAtY' in that specification.	推荐	初始定义

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最后修改： Sep 23, 2021 , 由 MDN 贡献者