SVG pointsAtX Attribute

The pointsAtX attribute denotes the x position in the coordinate system established by primitiveUnits attribute on the <filter> element of the point at which the light source is pointing. Only <feSpotLight> element is using this attribute.

Syntax:

pointsAtX = number

Attribute Values: The pointsAtX attribute accepts the values mentioned above and described below:

number: It is a numeric value referring to the units of the current coordinate system. Its default value is considered as 0.

Below examples illustrate the use of pointsAtX attribute.

Example 1:

html

<!DOCTYPE html>
<html>

<body>
    <div style="color: green;">

        <h1>GeeksforGeeks</h1>
        
        <svg viewBox="-10 0 1120 200" 
            xmlns="http://www.w3.org/2000/svg">

            <filter id="Geek1" x="0.01" 
                width="100%" height="100%">
                
                <feDiffuseLighting in="SourceGraphic">
                    <feSpotLight x="50" y="50" 
                        z="60" pointsAtX="0" />
                </feDiffuseLighting>
            </filter>

            <rect width="200" height="200" 
                style="filter: url(#Geek1);" />
        </svg>
    </div>
</body>

</html>

Output:

Example 2:

html

<!DOCTYPE html>
<html>

<body>
    <div style="color: green;">

        <h1>GeeksforGeeks</h1>
        
        <svg viewBox="-10 0 1120 200" 
            xmlns="http://www.w3.org/2000/svg">

            <filter id="geek2" x="0.01" 
                width="100%" height="100%">
                
                <feDiffuseLighting in="SourceGraphic">
                    <feSpotLight x="60" y="60" 
                        z="50" pointsAtX="400" />
                </feDiffuseLighting>
            </filter>

            <rect width="200" height="200" 
                style="filter: url(#geek2);" />
        </svg>
    </div>
</body>

</html>

Output:

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