public Poly MergeList()
{
Brush clippedList = CopyList();
Brush clip = clippedList;
Brush brush = null;
Poly polyList = null;
bool clipOnPlane = false;
for (int i = 0; i < GetNumberOfBrushes; i++)
{
brush = this;
clipOnPlane = false;
for (int j = 0; j < GetNumberOfBrushes; j++)
{
if (i == j)
{
clipOnPlane = true;
}
else
{
if (clip.AABBIntersect(brush))
{
clip.ClipToBrush(brush, clipOnPlane);
}
}
brush = brush.Next;
}
clip = clip.Next;
}
clip = clippedList;
while (clip != null)
{
if (clip.GetNumberOfPolys != 0)
{
// Extract brushes left over polygons and add them to the list
Poly p = clip.Polys.CopyList();
if (polyList == null)
{
polyList = p;
}
else
{
polyList.AddPoly(p);
}
clip = clip.Next;
}
else
{
// Brush has no polygons and should be deleted
if (clip == clippedList)
{
clip = clippedList.Next;
clippedList.SetNext(null);
clippedList = clip;
}
else
{
Brush temp = clippedList;
while (temp != null)
{
if (temp.Next == clip)
break;
temp = temp.Next;
}
temp.Next = clip.Next;
clip.SetNext(null);
clip = temp.Next;
}
}
}
return polyList;
}