I have a point B and a cursor S. I want to define a line whose slope is S and going through B
I defined it like that.

c1 : y - y(B) = S * (x - x(B))

It worked. But I want to use it in the the if block later. And it doesn’t work. (see this question test if a curve is above another)

I tried to define a function this way:

c1(x)  = S * (x - x(B)) +y(B)

But nothing is printed