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redblobgames/drop-shadow.html

Created March 8, 2017 00:48
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SVG drop shadow example
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drop-shadow.html
<!DOCTYPE html>
<html>
<svg width="80%" height="80%" viewBox="-100 -100 200 200">
<!-- Need this definition to make a drop shadow - based on examples from many articles, including svg spec -->
<defs>
<filter id="drop-shadow" x="-100%" y="-100%" width="300%" height="300%">
<feGaussianBlur in="SourceAlpha" stdDeviation="2"/>
<feOffset dx="5" dy="5" result="offsetblur"/>
<feFlood flood-color="#000000"/>
<feComposite in2="offsetblur" operator="in"/>
<feMerge>
<feMergeNode/>
<feMergeNode in="SourceGraphic"/>
</feMerge>
</filter>
</defs>
<!-- example of shapes with shadows -->
<circle cx="40" cy="-40" r="10" fill="red" filter="url(#drop-shadow)"/>
<circle cx="-60" cy="50" r="50" fill="blue" filter="url(#drop-shadow)"/>
</svg>
</html>
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