public static bool IsInside(Vector2 point, Geo2D geo2d)
{
Vector2 lineEnd = new Vector2(-Mathf.Infinity, point.y);
GeoEdge2D edge = new GeoEdge2D(point, lineEnd);
int intersectCount = 0;
foreach (GeoEdge2D e in geo2d.Edges)
{
if (GeoEdge2D.IsParallel(e, edge))
{
continue;
}
if (GeoEdge2D.IsOnline(point, e))
{
return(true);
}
if (GeoEdge2D.IsIntersected(edge, e))
{
intersectCount++;
}
}
return(intersectCount % 2 != 0);
}
public static bool IsIntersect(Geo2D poly2d, Geo2D rect2d)
{
if (!poly2d.AABBTest(rect2d))
{
return(false);
}
foreach (GeoEdge2D e1 in poly2d.Edges)
{
foreach (GeoEdge2D e2 in rect2d.Edges)
{
if (GeoEdge2D.IsIntersected(e1, e2))
{
return(true);
}
}
}
return(IsInside(poly2d.Center, rect2d) || IsInside(rect2d.Center, poly2d));
}