To provide a technique for calculating a value of a distance with a sign from a boundary face being a basis for a level setting method more speedily than a conventional example.
In the information processor, in regard to an (N-1)- singular complex G composed of a set of vertexes obtained as N-dimension vectors by carrying out calculation based upon a cut cell method, and a set of (N-1)- simplexes oriented by sequencing N sets of the vertexes. One most adjacent vertex from one given vertex is retrieved (S102),(N-1)- simplexes including the most adjacent vertex are retrieved (S103), values of distances with signs between the retrieved (N-1)- simplexes and the one given vertex are calculated (S104), and a minimum value among their absolute values is selected (S105).
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura