It's a SINE or ..... perhaps a COS lazarus / 39-Graphics ---------------------------------------------------------------------- Boleeman · 2025-04-26 04:17 A SIne and Cosine Animation Playing around a bit ! It's a bit slow at rendering at larger canvas sizes. I tried to avoid the OnPaint event and had it triggered with the timer instead. Not sure how else to speed up the animation? Enjoy. ---------------------------------------------------------------------- Lulu · 2025-04-26 08:51 very nice effect, and this one don't have memory leak! ---------------------------------------------------------------------- Boleeman · 2025-04-26 13:19 Glad you like it. Working on another version.