diffuseConstant

The diffuseConstant attribute represents the kd value in the Phong lighting model. In SVG, this can be any non-negative number.

It’s used to determine the final RGB value of a given pixel. The brighter the lighting-color, the smaller this number should be.

You can use this attribute with the following SVG elements:

Example

<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" diffuseConstant="1">
      <fePointLight x="60" y="60" z="20" />
    </feDiffuseLighting>
  </filter>
  <filter id="diffuseLighting2" x="0" y="0" width="100%" height="100%">
    <feDiffuseLighting in="SourceGraphic" diffuseConstant="2">
      <fePointLight x="60" y="60" z="20" />
    </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>

Usage notes

Value <number>
Default value 1
Animatable Yes

Specifications

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

Browser compatibility

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See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/diffuseConstant