I'm struggling with an SVG clip path scaling behaviour. I would like to scale a clip path to fit the element size it's applied to. I've been reading about clipPath units but I can't get this working.
Here is an example of what I am trying to do without any scaling: http://jsfiddle.net/1196o7n0/1/
...and the SVG ( the main shape and the clippath shape are exactly the same ):
<svg width="800" height="600" xmlns="http://www.w3.org/2000/svg" xmlns:svg="http://www.w3.org/2000/svg">
<clipPath id="svgPath">
<circle r="40" cy="50" cx="50" />
<circle r="74.576" cy="235" cx="193.949" />
<circle r="47.034" cy="108.305" cx="426.576" />
<circle r="43.644" cy="255.763" cx="346.915" />
<circle r="35.17" cy="82.882" cx="255.39" />
</clipPath>
<g fill="#000">
<circle r="40" cy="50" cx="50" />
<circle r="74.576" cy="235" cx="193.949" />
<circle r="47.034" cy="108.305" cx="426.576" />
<circle r="43.644" cy="255.763" cx="346.915" />
<circle r="35.17" cy="82.882" cx="255.39" />
</g>
</svg>
Now if I define a viewbox and make that SVG scales to fit the document width and height, the clip path doesn't seem to scale: http://jsfiddle.net/1196o7n0/2/
Any idea on how I can make this work ? Am i missing out on something?
To scale a clip path to fit the element that you are applying it to you need to add clipPathUnits="objectBoundingBox" to your clippath element.
Here is a JsFiddle based on your example demonstrating how to do this.
<svg width="0" height="0" >
<defs>
<clipPath id="svgPath" clipPathUnits="objectBoundingBox">
<circle r="0.05" cy="0.0625" cx="0.1625" />
<circle r="0.09322" cy="0.29375" cx="0.2424" />
<!-- rest of path here-->
</clipPath>
</defs>
</svg>
<div class="content centered">
<div class="clipped"></div>
</div>
The catcher is that the units of the path need to be decimal numbers between 0 and 1; these represent fractions of the corresponding element's width or height.