bool DiCullNode::IsIn( DiAABB &box )
{
if (box.IsNull())
{
return false;
}
if (box.IsInfinite())
{
return true;
}
DiVec3 center = mWorldAABB.GetMaximum().midPoint( mWorldAABB.GetMinimum() );
DiVec3 bmin = box.GetMinimum();
DiVec3 bmax = box.GetMaximum();
bool centre = ( bmax > center && bmin < center );
if (!centre)
{
return false;
}
DiVec3 octreeSize = bmax - bmin;
DiVec3 nodeSize = mWorldAABB.GetMaximum() - mWorldAABB.GetMinimum();
return nodeSize < octreeSize;
}
//-----------------------------------------------------------------------
DiPlane::Side DiPlane::getSide (const DiAABB& box) const
{
if (box.IsNull())
return NO_SIDE;
if (box.IsInfinite())
return BOTH_SIDE;
return getSide(box.GetCenter(), box.GetHalfSize());
}