/// <summary>
/// Removes vertices from the provided vertex sequence. This will scan round all vertices in the contour
/// and if the vector to and from each vertex to its neighbours is the same (i.e. 3 vertices are in a straight
/// line), then the center vertex is culled. Reducing the amount of vertices in the contour but retaining the shape.
/// </summary>
/// <param name="vs">The vertex sequence to cull vertices from.</param>
private void RemoveVertices(VertexSequence vs)
{
int count = 0;
for (int i = 0; i < vs.Count; i++)
{
Vector2 a = vs[i - 1];
Vector2 b = vs[i];
Vector2 c = vs[i + 1];
//Remove b if its the same X or same Y as a and c
bool abX = UnityEngine.Mathf.Approximately(a.x, b.x);
bool bcX = UnityEngine.Mathf.Approximately(b.x, c.x);
bool abY = UnityEngine.Mathf.Approximately(a.y, b.y);
bool bcY = UnityEngine.Mathf.Approximately(b.y, c.y);
if ((abX && bcX) || (abY && bcY))
{
count++;
vs.Remove(b);
i--;
}
}
}