I had the need for a simple script that i can feed with the vertices from a existing mesh and generete a convex collider-mesh out of it for Unity. So i found this realy nice C# implementation 1 2 from Matt Campbell of a fast algorithm called QuickHull 3 and could it implement it very easy into my Unity project. The result of this was a nice little script component you can attach to any game object and it will generate a mesh collider from it and add it to the gameobject or any other target gameobject.