added check for parts of V. area out of bounds; if so, "cut off" the outlying part; added to tNode::ComputeVoronoiArea()
added check for parts of V. area out of bounds; if so, "cut off" the outlying part;
added to tNode::ComputeVoronoiArea()


childmodel/child,childmodel/child,childmodel/child,childmodel/child,childmodel/child,childmodel/child