SVG <feSpecularLighting> Filter

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What is <feSpecularLighting> Filter?

The <feSpecularLighting> SVG filter primitive lights a source graphic using the alpha channel as a bump map. The output image is an RGBA image based on the light color.


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<!DOCTYPE html> <html lang="en-US"> <body> <svg height="140" width="140" xmlns=""> <filter id = "point"> <feSpecularLighting result="specOut" specularExponent="60" lighting-color="#339933"> <fePointLight x="10" y="35" z="150"/> </feSpecularLighting> <feComposite in="SourceGraphic" in2="specOut" operator="arithmetic" k1="0" k2="1" k3="1" k4="0"/> </filter> <circle cx="70" cy="70" r="60" style="filter:url(#point)"/> </svg> </body> </html>

Attributes Value

inSpecifies the input for the given filter primitive.
surfaceScaleSpecifies the height of the surface for a light filter primitive.
specularConstantSpecifies the ks value in the Phong lighting model.
specularExponentControls the focus for the light source.
kernelUnitLengthSpecifies the intended distance in current filter units.


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