Hey everyone, simple question for any of you who use Vectors.
I’m trying to figure out how to implement SAT (Separating Axis Theorem) for a collision detection script i’m writing, and I have most of it down, but i’m coming into problems when I calculate the Vectors of my polygons that I am projecting on each edge axis.
Basically my problem is this: given a square (or any other polygon), how do i calculate the vectors to project on each axis?
here are the two methods i’ve tried:
given a square 3 units in width and height, starting at coordinate 0,0:
Method 1 seems like it would be the correct method, but it gives me poor results, i have followed some examples online and I think the rest of my math is good, but the negative numbers are throwing things off.
Method 2 however gives me better results, but it won’t get certain intersections, plus it just doesn’t seem right, what with <0, 0> being a vector. Is there another method I haven’t tried or is Method 1 or Method 2 correct and my problem lies elsewhere?
please help! (this is driving me crazy)
