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POWPF - Control over blending between semi-transparent layers
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copied!<p>In digital imaging, when overlaying two visual layers there are multiple ways you can calculate the image that results when light from a lower layer shines through an obstructing layer in some way. This can offer effects that do not occur as natural phenomenon, such as multiplying colours.</p> <p>Here's an example of the layer blending mode menu provided in Photoshop:</p> <p><a href="http://www.psdtop.com/blog/wp-content/images/020_Blending-Modes/blending-mode.jpg" rel="nofollow noreferrer">http://www.psdtop.com/blog/wp-content/images/020_Blending-Modes/blending-mode.jpg</a></p> <p>I recommend visiting the article <a href="http://www.psdtop.com/blog/basic/understanding-blending-modes/" rel="nofollow noreferrer">Understanding Blending Modes</a> if this topic isn't something you're familiar with. It provides a great showcase of the results of each option against two layers.</p> <p>As far as I can tell, WPF only provides the 'Normal' option. That is, the following UI just blends colours as though they were coloured gels:</p> <pre><code><Grid> <Ellipse Width="40" Height="40" Fill="#80FF0000" Margin="16,0,0,0" /> <Ellipse Width="40" Height="40" Fill="#8000FF00" Margin="32,32,0,0" /> <Ellipse Width="40" Height="40" Fill="#800000FF" Margin="0,32,0,0" /> </Grid> </code></pre> <p>Which looks like this:</p> <p><a href="http://img4.imageshack.us/img4/5541/temprx.png" rel="nofollow noreferrer">http://img4.imageshack.us/img4/5541/temprx.png</a></p> <p>I'd like to know if there's any way to control the way in which layers blend.</p>

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