public void GetVisibleRegions(ref List <BoundingBox> _regions, ref List <Point3D> _pointsE, ref List <Point3D> _pointsM,
ViewFrustumFunctions _vff)
{
if (_vff == null)
{
return;
}
if (_regions == null)
{
_regions = new List <BoundingBox>();
}
if (_pointsE == null)
{
_pointsE = new List <Point3D>();
}
if (_pointsM == null)
{
_pointsM = new List <Point3D>();
}
bool notOutside = !_vff.IsOutsideFrustum(this.region);
if (notOutside)
{
_regions.Add(this.region);
Utils.LineWHistory.LinesWH2UniqueP3D(this.nodeLines, ref _pointsE, ref _pointsM, true);
// check deeper into the tree
if (this.hasChildren())
{
for (int flags = this.activeNodes, index = 0; flags > 0; flags >>= 1, index++)
{
if ((flags & 1) == 1)
{
this.childNodes[index].GetVisibleRegions(ref _regions, ref _pointsE, ref _pointsM, _vff);
}
}
}
}
}
