Hello, Working on a testbed program for another idea of mine, I decided to implement a slightly improvised pong/breakout like clone. I didnt want to limit myself to horizontal and vertical collisions though, so i decided to implement collisions based soley on lines and circles (4 lines in a rect, etc.) then being able to have the lines skewed. I figured this was also a good way to be able to change the collision type based on which part of a shape was hit (defined by the line segment). I am having a few problems with this approch though.. The most massive I have is... how to define a line? In normal computer terms, i would define it as a pair of X&Y values, but doing that in this case does not provide the information to accuratly detect the collision or the bounce, so i figured having a slope, but then that rules out vertical lines (both vertical and horizontal lines will be commonplace enough for that to pose problems. I thought about using an angle value to specify the slope, but im not sure the drawbacks on that approch. I figure if I do have the angle of skew for the line, i could use that angle to turn some sort of 2d vector and figure out the standard bounce angle, then turn the line again. Or something im the sort. I feel that I am confusing myself, if someone would bother pushing me in the right direction here... LOL. Thanks