SVG FESpecularLighting.surfaceScale Property

Last Updated : 30 Mar, 2022

The SVG FESpecularLighting.surfaceScale property returns the SVGAnimatedNumber object corresponding to the surfaceScale component of the FESpecularLighting.surfaceScale element.

Syntax:

var a = FESpecularLighting.surfaceScale

Return value: This property returns the SVGAnimatedNumber object corresponding to the surfaceScale component of the FESpecularLighting.surfaceScale element.

Example 1:

HTML

<!DOCTYPE html> 
<html> 
  
<body> 
    <svg height="200" width="200" 
        viewBox="0 0 220 220"> 
  
        <filter id="filter"> 
  
            <feSpecularLighting in="BackgroundImage"
                specularConstant="0.8" surfaceScale="1" 
                specularExponent="20" kernelUnitLength="1" 
                lighting-color="red" id="gfg"> 
  
                <fePointLight x="100" y="100" z="220" /> 
            </feSpecularLighting> 
  
            <feComposite in="SourceGraphic" in2="specOut" 
                operator="arithmetic" k1="0" k2="1" 
                k3="1" k4="0" /> 
        </filter> 
  
        <rect x="60" y="60" width="150" height="150" 
            style="stroke: #000000; fill: lightgreen;  
                filter: url(#filter);" /> 
  
        <script type="text/javascript"> 
            var g = document.getElementById("gfg"); 
            console.log(g.surfaceScale); 
              
            console.log("surfaceScale value is : ",  
                g.surfaceScale.baseVal) 
        </script> 
    </svg> 
</body> 
  
</html>

Output:

Example 2:

HTML

<!DOCTYPE html> 
<html> 
  
<body> 
    <svg height="200" width="200"> 
        <filter id="filter"> 
  
            <feSpecularLighting specularExponent="5"
                lighting-color="gold" result="light" 
                surfaceScale="5" in="SourceGraphic" 
                id="gfg"> 
  
                <fePointLight x="100" y="100" z="100" /> 
            </feSpecularLighting> 
  
            <feComposite in="SourceGraphic" 
                in2="specOut" operator="arithmetic" 
                k1="1" k2="0" k3="1" k4="0" /> 
        </filter> 
  
        <rect x="1" y="1" width="200" height="200" 
            style="stroke: #000000; fill: green;  
            filter: url(#filter);" /> 
  
        <rect x="50" y="50" width="100" height="100" 
            style="stroke: #000000; fill: green;  
            filter: url(#filter);" /> 
  
        <g fill="#FFFFFF" stroke="black" 
            font-size="10" font-family="Verdana" /> 
  
        <text x="60" y="100">GeeksForGeeks</text> 
  
        <script type="text/javascript"> 
            var g = document.getElementById("gfg"); 
            console.log(g.surfaceScale); 
  
            console.log("surfaceScale value is : ",  
                g.surfaceScale.baseVal) 
        </script> 
    </svg> 
</body> 
  
</html>

Output:

Example 3:

HTML

<!DOCTYPE html> 
<html> 
  
<body> 
    <svg height="200" width="200" 
        viewBox="0 0 220 220"> 
  
        <filter id="filter"> 
            <feSpecularLighting specularExponent="2"
                lighting-color="shadow" result="light" 
                surfaceScale="6" in="BackgroundImage" 
                id="gfg"> 
  
                <fePointLight x="200" y="200" z="100" /> 
            </feSpecularLighting> 
  
            <feComposite in="SourceGraphic" 
                in2="specOut" operator="arithmetic" 
                k1="0" k2="1" k3="1" k4="0" /> 
        </filter> 
  
        <rect x="40" y="40" width="200" height="200" 
            style="stroke: black; fill: green;  
            filter: url(#filter);" /> 
  
        <circle cx="130" cy="130" r="50" 
            style="fill: black; filter:url(#filter)" /> 
  
        <script type="text/javascript"> 
            var g = document.getElementById("gfg"); 
            console.log(g.surfaceScale); 
  
            console.log("surfaceScale value is : ",  
                g.surfaceScale.baseVal) 
        </script> 
    </svg> 
</body> 
  
</html>