SVG FESpecularLighting.specularConstant Property

Last Updated : 30 Mar, 2022

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

Syntax:

var a = FESpecularLighting.specularConstant

Return value: This property returns the SVGAnimatedNumber object corresponding to the specularConstant component of the FESpecularLighting.specularConstant 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.specularConstant);

            console.log("specularConstant value is : ",
                g.specularConstant.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" 
                specularConstant="1.3" 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.specularConstant);

            console.log("specularConstant value is : ", 
                g.specularConstant.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" 
                specularConstant="5" 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.specularConstant);

            console.log("specularConstant value is : ", 
                g.specularConstant.baseVal)
        </script>
    </svg>
</body>

</html>