Circle following the line

Hello, I’m trying to make a circle moves continuously through the line that is generated between the cursor and the starting point.
Thank you very much.

line_circle_follow.v4p (16.1 kB)

what do you mean by “a circle moves continuously through the line”?

Do you mean a circle which follows the angle? maybe like this:

line_circle_follow1.v4p (11.8 kB)

First thanks for your help
What I need is that the circle follow the line generated from the cursor to the origin point constantly. The main problem is that when you move the cursor changes the slope of the line and I need that the circle follow the slope.

I’ve attached sample drawing

PD: sorry for my poor English writing :)

Maybe now i understood you right. Here the circle can go along the line with the slider. I not fully understand why(mathematically), but it seems to work. Might be a better way to do it.

line_circle_follow2.v4p (21.3 kB)