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<p>Hi Hilaire,</p>
<p>clipping to damage areas is done 'automatically' by the
framework, no need to do it yourself. Is this what you are
referring to?</p>
<p>HTH,</p>
<div class="moz-cite-prefix">On 2026-08-23 6:35 AM, Hilaire
Fernandes via Cuis-dev wrote:<br>
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<blockquote type="cite"
cite="mid:8d68e981-2ee5-4436-b8b4-2d937d95e2ab@free.fr">
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<p><font size="4">Hi, </font></p>
<p><font size="4">Do I need to optimize that kind method ? Or is
it done by the Canvas? It seems so when reading the code.</font></p>
<p><font size="4" face="monospace">drawOn: canvas<br>
viewport := owner viewport.</font></p>
<p><font size="4" face="monospace"> " clipped to visible area "<br>
canvas image: self form at: viewport origin sourceRect:
viewport.</font></p>
<p><font size="4" face="monospace"> " no clipping handling "<br>
canvas image: self form at: 0@0</font></p>
<p><font size="4">Thanks</font></p>
<p><font size="4">Hilaire</font></p>
<pre class="moz-signature" cols="72">--
<a class="moz-txt-link-freetext" href="http://mamot.fr/@drgeo"
moz-do-not-send="true">http://mamot.fr/@drgeo</a></pre>
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</blockquote>
<pre class="moz-signature" cols="72">--
Juan Vuletich
<a class="moz-txt-link-abbreviated" href="http://www.cuis.st">www.cuis.st</a>
github.com/jvuletich
researchgate.net/profile/Juan-Vuletich
independent.academia.edu/JuanVuletich
patents.justia.com/inventor/juan-manuel-vuletich</pre>
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