// Mark the outside trapezoids surrounding the polygon
private void markOutside(Trapezoid t)
{
if (t.top == boundingBox.top || t.bottom == boundingBox.bottom)
{
t.trimNeighbors();
}
}
// Recursively trim outside neighbors
public void trimNeighbors()
{
if (inside)
{
inside = false;
if (upperLeft != null)
{
upperLeft.trimNeighbors();
}
if (lowerLeft != null)
{
lowerLeft.trimNeighbors();
}
if (upperRight != null)
{
upperRight.trimNeighbors();
}
if (lowerRight != null)
{
lowerRight.trimNeighbors();
}
}
}