public List <CSGPolygon> allPolygons()
{
/*
* Create a shallow copy of the list
*/
CSGPolygon[] plist = new CSGPolygon[this.polygons.Count];
polygons.CopyTo(plist);
polygons = plist.ToList <CSGPolygon>();
if (this.front != null)
{
foreach (CSGPolygon p in this.front.allPolygons())
{
polygons.Add(p);
}
}
if (this.back != null)
{
foreach (CSGPolygon p in this.back.allPolygons())
{
polygons.Add(p);
}
}
return(polygons);
}
public List <CSGPolygon> clipPolygons(List <CSGPolygon> polygons)
{
if (this.plane == null)
{
/*
* Create a shallow copy of the list
*/
CSGPolygon[] plist = new CSGPolygon[polygons.Count];
polygons.CopyTo(plist);
return(plist.ToList <CSGPolygon>());
}
List <CSGPolygon> front = new List <CSGPolygon>();
List <CSGPolygon> back = new List <CSGPolygon>();
for (int i = 0; i < polygons.Count; i++)
{
this.plane.splitPolygon(polygons[i], front, back, front, back);
}
if (this.front != null)
{
front = this.front.clipPolygons(front);
}
if (this.back != null)
{
back = this.back.clipPolygons(back);
}
else
{
back = new List <CSGPolygon>();
}
foreach (CSGPolygon p in back)
{
front.Add(p);
}
return(front);
}