pointsAtY

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

You can use this attribute with the following SVG elements:

<feSpotLight>

Example

<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>

Usage notes

Default value	`0`
Value	`<number>`
Animatable	Yes

Specifications

Specification	Status	Comment
Filter Effects Module Level 1 The definition of 'pointsAtY' in that specification.	Working Draft	No change
Scalable Vector Graphics (SVG) 1.1 (Second Edition) The definition of 'pointsAtY' in that specification.	Recommendation	Initial definition

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`pointsAtY`	Yes	12	4	Yes	9	?	Yes	Yes	Yes	?	?	Yes

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https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/pointsAtY