private List <PolygonIntersectionPoint> _GetEntryPoints()
{
List <PolygonIntersectionPoint> res = new List <PolygonIntersectionPoint>();
PointD firstClipPoint = _clip._vertexManager.GetVertex(0).Location;
int moduloRes = (_subject.Contains(firstClipPoint) ? 0
: 1);
int cnt = 0;
foreach (var intersectionList in _clipPoints)
{
foreach (var intersectionPoint in intersectionList)
{
if (cnt % 2 == moduloRes)
{
res.Add(intersectionPoint);
}
++cnt;
}
}
return(res);
}
public PolygonPositionRelation GetRelationWith(Polygon other)
{
if (this.Contains(other))
{
return(PolygonPositionRelation.Contains);
}
else if (other.Contains(this))
{
return(PolygonPositionRelation.IsInside);
}
else if (this.IsDisjointWith(other))
{
return(PolygonPositionRelation.Disjoint);
}
else
{
return(PolygonPositionRelation.Intersects);
}
}
public bool IsDisjointWith(Polygon otherPolygon)
{
return(!this.Contains(otherPolygon) &&
!this.IntersectsWith(otherPolygon) &&
!otherPolygon.Contains(this._polygon));
}
