Object transformations Broad phase collision detection Overlapping objects Mid phase (object against object) Simulation Colliding pairs Collision response Narrow phase (primitives or convex parts) A B D C G E F 0 1 4 5 2 3 6 7 8 9 12 13 10 11 14 15 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 a) b) r n h z π y x p0 p0 c) d) π´ π t p0 e π e p0 A p1 p0 w0 w1 w0 E C w1 B n D ωB B vA A vB d rA ωA rB