Okay, so I am trying to create a simple 2d polygon physics engine for the experience. Here is what I already know (plus sources for those who want to find out:
-How to determine if polygons are intersecting using the SAT method (http://elancev.name/oliver/2D%20polygon.htm)
-How to find the normal of the collision by finding the minimum translation axis
-How to respond to a collision via implulse (http://chrishecker.com/Rigid_Body_Dynamics#articles)
There is one thing however that keeps eluding me. That is, how to find the points of contact between two intersecting polygons. I was going to upload a simple picture to help illustrate what I mean, but it seems like I am not able to do that yet.
Specifically what I would like help on is:
-Determining which sides and/or points are colliding
-This includes when the polygons are intersecting
-Getting a vector location of each contact point
I would really appreciate anything on this because I have been searching for a good while with no luck.
Thanks.
After doing some more digging I found what I was looking for. I found a rather well written example (in C#) of a technique called polygon clipping. This method finds the contact points in world coordinates. It goes through all the steps and code implementation for multiple different situations.
Here is the url: http://www.codezealot.org/archives/394