The z attribute defines the location along the z-axis for a light source in the coordinate system established by the primitiveUnits attribute on the <filter> element, assuming that, in the initial coordinate system, the positive z-axis comes out towards the person viewing the content and assuming that one unit along the z-axis equals one unit in x and y.
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="diffuseLighting1" x="0" y="0" width="100%" height="100%">
<feDiffuseLighting in="SourceGraphic">
<fePointLight x="60" y="60" z="10" />
</feDiffuseLighting>
</filter>
<filter id="diffuseLighting2" x="0" y="0" width="100%" height="100%">
<feDiffuseLighting in="SourceGraphic">
<fePointLight x="60" y="60" z="50" />
</feDiffuseLighting>
</filter>
<rect
x="0"
y="0"
width="200"
height="200"
style="filter: url(#diffuseLighting1);" />
<rect
x="0"
y="0"
width="200"
height="200"
style="filter: url(#diffuseLighting2); transform: translateX(220px);" />
</svg>
For <fePointLight>, z defines the location along the z-axis for the light source in the coordinate system established by the primitiveUnits attribute on the <filter> element.
| Value | <number> |
|---|---|
| Default value | 1 |
| Animatable | Yes |
For <feSpotLight>, z defines the location along the z-axis for the light source in the coordinate system established by the primitiveUnits attribute on the <filter> element.
| Value | <number> |
|---|---|
| Default value | 1 |
| Animatable | Yes |
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https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/z