How can I create a partially filled star shape with SVG?

Creating and Partially Filling a Star Shape with SVG

To create a stroke on the outside of the star, you should tweak the stroke-linecap property. Here's an updated version of your code:

<br><svg height="210" width="500"><br>  <polygon points="100,10 40,198 190,78 10,78 160,198" stroke-linecap="round"></svg><br>

Now, let's partially fill the star shape. You can use CSS filters to achieve this effect. A filter called "fillpartial" can be defined as follows:

<br><defs><br>  <filter><pre class="brush:php;toolbar:false"><feFlood x="0%" y="0%" width="100%" height="100%" flood-color="red" />
<feOffset dy="0.5">
  <animate attributeName="dy" from="1" to=".5" dur="3s" />
</feOffset>
<feComposite operator="in" in2="SourceGraphic" />
<feComposite operator="over" in2="SourceGraphic" /></p>
<p></filter><br></defs><br>

Then, you can apply this filter to your star shape like this:

<br><polygon filter="url(#fillpartial)" points="165.000, 185.000, 188.511, 197.361, 184.021, 171.180,<br> 203.042, 152.639,<br> 176.756, 148.820,<br> 165.000, 125.000,<br> 153.244, 148.820,<br> 126.958, 152.639,<br> 145.979, 171.180,<br> 141.489, 197.361,<br> 165.000, 185.000">

This will result in a star shape that is filled up to the halfway point, creating a half-filled effect. You can modify the stop-color and stop-opacity values of the element to change the color and transparency of the filled area.

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