Ok, perhaps I expressed myself in a too complicated way
What I basically want to do is:
For any given point, determine on which side of a quadratic bezier curve that point is.
Secondarily I would like to know if it anyone knows if you can write a (all) quadratic bezier curve on the form, (and how to get it):
Ax + By + Cx^2 + Dy^2 + E = 0
I havn't found any info on the net regarding this :/