Portalboat wrote:I guess so, I was never really clear on what the meant.
In this case, "convex" means that there are absolutely no places where it "bulges inwards" or "has dents".
For example, the letters O or D are convex. The letters A and B are not, because they have "inwards bits" on the bottom of the A and the right-hand side of B.
Edit: Here's an improved version. If you can draw a line from any vertex to any other vertex, and that line goes "outside" the shape, it's not convex. This is true in 3D as well.