<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html; charset=UTF-8" http-equiv="Content-Type"> </head> <body bgcolor="#ffffff" text="#000000"> Hi Hilaire, Most likely, the drawing of your PaperMorph takes too much time. The alternatives I see are either find ways to speed it up, or decouple the capture of the samples from the drawing, and, for example, only update the morph on buttonUp. That would require a different way to give the user feedback about the samples that are being taken. Hope this helps, On 3/29/2023 6:13 PM, Hilaire Fernandes via Cuis-dev wrote: <blockquote cite="mid:479a9fde-3f3e-c15a-234a-9df950e55e14@free.fr" type="cite"> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> Hi, I am working on a paper morph to record hand writing with a pen. When the paper morph extent is important (>1000 pixels), the received Mouse move event are two few. In the screen shot below, at the left a slow hand writing, there are enough points. At the right is an accelerated but still relevant hand writing speed, there are not enough positions received from the mouse move event. Blue points are position received from the mouse move event, red control points and green line tangent of the quadratic bezier curve. I was afraid to have too much position, but it is the contrary. I suspect Morph event is over busy because if I fold the other window it improves a bit but not enough. Ideas? Thanks <img moz-do-not-send="false" src="cid:part1.04030403.07090108@cuis.st" alt="hw" height="502" width="472"> <pre class="moz-signature" cols="72">-- GNU Dr. Geo <a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://drgeo.eu">http://drgeo.eu</a> <a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://blog.drgeo.eu">http://blog.drgeo.eu</a></pre> </blockquote> <pre class="moz-signature" cols="72">-- Juan Vuletich cuis.st github.com/jvuletich researchgate.net/profile/Juan-Vuletich independent.academia.edu/JuanVuletich patents.justia.com/inventor/juan-manuel-vuletich linkedin.com/in/juan-vuletich-75611b3 twitter.com/JuanVuletich</pre> </body> </html>