Can someone explain why there are trails for the ellipse?

[BSiemens]

https://p5js.org/examples/structure-create-graphics.html

[glv]

Hello,

I am someone!
https://p5js.org/learn/color.html
https://p5js.org/reference/#/p5/fill

fill(gray, [alpha])

:)

[BSiemens]

Why does the alpha channel of something drawn behind the ellipse create the trail?

[slow_izzm]

Because each time fill() is invoked it is only applying 0.047% opacity over what was previously drawn. draw() runs aprox 60 times per second …

[BSiemens]

Of course. Thanks! Now I have to include more characters or it won’t let me post.

[slow_izzm]

just in case you are unfamiliar, this is a great resource for beginners …