This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
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:
<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" filter="url(#lighting1)" />
<rect x="220" y="0" width="200" height="200" filter="url(#lighting2)" />
</svg>
| Default value | 0 |
|---|---|
| Value | <number> |
| Animatable | Yes |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
pointsAtY |
5 | 12 | 3 | 9 | 6 | 18 | 4 | 10.1 | 6 | 1.0 | 4.4 | 6 |
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https://developer.mozilla.org/en-US/docs/Web/SVG/Reference/Attribute/pointsAtY