/// <summary>
/// Builds the convex region for a node and its children
/// </summary>
private static void BuildConvexRegions( BspNode node, Tesselator tess, Tesselator.Polygon poly )
{
Tesselator.Polygon behindPoly;
Tesselator.Polygon inFrontPoly;
tess.Split( node.Plane, poly, out behindPoly, out inFrontPoly );
if ( node.Behind != null )
{
BuildConvexRegions( node.Behind, tess, behindPoly );
}
if ( node.InFront != null )
{
BuildConvexRegions( node.InFront, tess, inFrontPoly );
}
else
{
node.ConvexRegion = inFrontPoly.Indices;
}
}
