public bool PointingInward(Vector2 position, float angle)
{
Velocity tmp = new Velocity(2*(bounds.Width + bounds.Height), angle, true);
Vector2 limit = tmp.Move(position);
int clip = 0;
int count = 0;
for (int i = 0; i < NumberOfSides(); i++)
{
ColisionInfo info = LineManager.LinesIntersect(position, limit, GetCorner(i), GetCorner((i + 1) % NumberOfSides()));
switch(info.Type)
{
case 0:
break;
case 1:
if (FloatHelp.ApproxEquals(info.IntersectionPointA.Value, position, .01f))
{ }
else
{
clip++;
}
break;
case 2:
break;
case 3:
count++;
break;
}
}
return (count + (clip/2)) % 2 == 1;
}
public int CountIntersections(Vector2 A, Vector2 B)
{
int count = 0;
int cornerClips = 0;
foreach(Vector2 [] edge in GetEdges())
{
int type = LineManager.LinesIntersect(A, B, edge[0], edge[1]).Type;
if (type >= 2)
{
count++;
}
else if(type == 1)
{
count++;
cornerClips++;
}
}
count -= cornerClips / 2;
return count;
}