SVG FESpotLightElement.pointsAtX属性用法及代码示例

SVG FESpotLightElement.pointsAtX属性返回与FESpotLightElement.pointsAtX元素的pointsAtX属性相对应的SVGAnimatedNumber对象。

用法:

var a = FESpotLightElement.pointsAtX

返回值：此属性返回与FESpotLightElement.pointsAtX元素的pointsAtX属性相对应的SVGAnimatedNumber对象。

范例1：

HTML

<!DOCTYPE html>  
<html>  
  
<body>  
    <div style="color:green;">  
        <h1>  
            GeeksforGeeks  
        </h1>  
  
        <svg viewBox="0 0 1120 350"
            xmlns="http://www.w3.org/2000/svg">  
  
            <filter id="Geek" width="100%"
                height="100%">  
                <feDiffuseLighting in="SourceGraphic">  
                    <feSpotLight x="120" y="120"
                        z="50" pointsAtZ="5" pointsAtX="5" 
                        pointsAtY="5" id="Geek2"/>  
                </feDiffuseLighting>  
            </filter>  
                      
            <rect width="300" height="300"
                style="filter:url(#Geek);"/> 
  
  
                <text x="50" y="60">GeeksForGeeks</text> 
            <script type="text/javascript"> 
                var g = document.getElementById("Geek2"); 
                console.log(g.pointsAtX); 
                console.log("pointAtX value of feSpotLight "+ 
                "element is:"+g.pointsAtX.baseVal) 
            </script> 
        </svg>  
    </div>  
</body>  
  
</html>

输出：

范例2：

HTML

<!DOCTYPE html>  
<html>  
  
<body>  
    <svg width="200" height="200">  
        <defs>  
            <filter id="spotlight">  
                <feSpecularLighting result="spec3"
                    in="blur3" specularConstant="1.2"
                    lighting-color="#FFF">  
  
                    <feSpotLight x="400" y="400"
                        z="900" pointsAtZ="5" pointsAtX="5" 
                        pointsAtY="5" limitingConeAngle="9"
                        specularExponent="10" id="gfg"/>  
                </feSpecularLighting>  
  
                <feComposite in="SourceGraphic"
                    in2="spotlight" operator="out"
                    k1="0" k2="1" k3="1" k4="0" />  
            </filter>  
        </defs>  
  
        <rect x="40" y="40" width="150" height="100"
            style="stroke:#000000;  
                fill:green;  
                filter:url(#spotlight);" />  
  
        <g fill="#FFFFFF" stroke="black" font-size="10"
            font-family="Verdana"/>  
              
            <text x="50" y="90">GeeksForGeeks</text>  
  
        <script type="text/javascript"> 
            var g = document.getElementById("gfg"); 
            console.log(g.pointsAtX); 
            console.log("pointsAtX value of feSpotLight "+ 
            "element is:"+g.pointsAtX.baseVal) 
        </script> 
    </svg>  
</body>  
  
</html>

输出：

支持的浏览器：

谷歌浏览器
Edge
Firefox
Safari
Opera
IE浏览器

相关用法

注：本文由纯净天空筛选整理自taran910大神的英文原创作品 SVG FESpotLightElement.pointsAtX property。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。