private CPRes GetClosestPointOnBorder_Core(Vector2 pt)
{
CPRes res = new CPRes();
float max_dist2 = Mathf.Infinity;
foreach (var loop in m_loops)
{
for (int pos = 0; pos < loop.Count; ++pos)
{
EdgeCP cp = loop[pos].GetClosestPoint(pt);
float distance2 = Vector2.SqrMagnitude(pt - cp.pt);
if (distance2 < max_dist2)
{
max_dist2 = distance2;
res.edge_cp = cp;
res.loop = loop.ConvertAll(x => (IEdge)x);
res.pos_in_loop = pos;
}
}
}
return(res);
}
public bool IsPointInside(Vector2 pt)
{
CPRes cp = GetClosestPointOnBorder_Core(pt);
if (cp.edge_cp.at_edge_end == null)
{
return(IsPointInsideByEdge(pt, cp.loop[cp.pos_in_loop], cp.edge_cp));
}
// by vertex
int first_pos = cp.edge_cp.at_edge_end.Value ? cp.pos_in_loop : cp.pos_in_loop - 1;
int second_pos = (first_pos + 1) % cp.loop.Count;
if (first_pos < 0)
{
first_pos = cp.loop.Count - 1;
}
return(IsPointInsideByVertex(pt - cp.edge_cp.pt,
cp.loop[first_pos].Eval(1.0f).dir,
cp.loop[second_pos].Eval(0.0f).dir));
}
