2d - How to get a reflex edge on a non-convex mesh

I am trying to implement a convex decomposition and I need to find the convex vertex on a mesh. Is there a algorithm that I can use to find the convex vertex on a mesh.

Answer

Here is some code that I used.

private static boolean isReflex(Vector3f p0, Vector3f p, Vector3f p1) {
    // TODO Auto-generated method stub
    return right(p1,p0,p);
}



private static boolean right(Vector3f a, Vector3f b, Vector3f p) {
    return Segment.getLocation(p,a,b) < 0;
}

public static float getLocation(Vector3f point, Vector3f linePoint1, Vector3f linePoint2) {
    Vector3f l = Vector3f.add(linePoint2, linePoint1, null);
    Vector3f p = Vector3f.sub(point, linePoint1, null);

    return Vector3f.angle(l, p);
}