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<TITLE>addOverlay</TITLE>
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<div align="center"><img id="headerGraphic" src="images/sludge300.png" alt="SLUDGE"/></div>
<h2>addOverlay</h2>
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<H3>Syntax:</H3>
<P>
<pre class="syntax">addOverlay (<i>thisFile, atX, atY</i>);</pre>
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<H3>Purpose:</H3>
<P>
Loads an image from the file handle <i>thisFile</i> and overlays it onto the screen.
Bright magenta (255, 0, 255 or #FF00FF) is used as the transparency colour
(except for 32-bit images, where the alpha channel is used!), making it
possible to add irregular shapes.
</P>
<P>
The values <i>atX</i> and <i>atY</i> define the top left corner of the area into which the image will be added. If the value of <i>atX</i> is CENTRE (or CENTER) the image will be added halfway across the window. If the value of <i>atY</i> is CENTRE (or CENTER) the image will be added halfway down the window.
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<H3>Return value:</H3>
<P>
No return value.
</P>
<H3>Example:</H3>
<P>
<pre>sub init () {
addOverlay ('someImage.tga', CENTER, CENTER);
}</pre>
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<H3>See also:</H3>
<P>
<a href="File_Handling.html">File Handling</a>
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<P>
<a href="The_Background_Image.html">The Background Image</a>
</P>
<P>
<a href="darkBackground.html">darkBackground</a>
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<P>
<a href="mixOverlay.html">mixOverlay</a>
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<p>
<a href="parallaxAdd.html">parallaxAdd</a>
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<P class="copyright-notice">SLUDGE and this SLUDGE documentation are <A HREF="Copyright.html">copyright</A> Hungry Software and contributors 2000-2011
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