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<p>I don't think there should be any difference, but if you see it,
it is there! Can you prepare an image for me to investigate?</p>
<p>Thanks!</p>
<div class="moz-cite-prefix">On 2026-08-24 4:39 PM, Hilaire
Fernandes via Cuis-dev wrote:<br>
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cite="mid:d71a52f5-24a4-4b9a-8c39-c1680c4304b7@free.fr">
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<p><font size="4">With a Morph whose drawing is from a form. When
only a rectangular area of the Morph is visible, is it faster
to only draw that area with #image:at:sourceRect: or is
#image:at: ok as it will clip anyway to draw only the visible
rectangular area?</font></p>
<p><font size="4">After some tests, I observed some gain with </font><font
size="4">#image:at:sourceRect: -- a couple of fps. 7 fps up to
9 fps.</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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<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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