Geometric Slerp - Calculating Points along an Arc I'm trying to understand how to use Geometric Slerp, as seen here.
Having looked at the following equation:

How can P0 and P1 be calculated in order to using this equation? Aren't P0 and P1 represented by 2 numbers? The 2 numbers being x and y coordinates? or have I miss understood the equation?
Below is what I'm trying to achieve; in a program, I have a camera following a car and when the car turns, the cameras position needs to update to stay behind it (I'm think using a Geometric Slerp is the way to go).
Below are two doodles to help you understand my description above. The first image shows the car and camera; the second shows the details:

Do I need to calculate P1 from P0's position to use this? Either way, I'm unsure how this can be implemented. Thanks. 
Edit:
I've tried to implement it using P0 and P1 as X Coordinates, but doesn't work as expected:
slerp = (((sin((1-t)*Omega))/(sin(Omega)))*p0)+(((sin(t*Omega))/(sin(Omega)))*p1)

Your equation is a vector equation. So, yes, $P_0$ and $P_1$ are 2D points. You multiply these points by scalars, and then add together. 
