CUTTING LINE POSITIONING APPARATUS, CUTTING SYSTEM, NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM STORING CUTTING LINE POSITIONING COMPUTER PROGRAM, AND CUTTING LINE POSITIONING METHOD

A candidate point selection processor selects, as candidate points, vertices on an outline. A search point selection processor selects, from the candidate points, a reference search point to be used to search for a point that serves as a cutting line endpoint. A reference line setting processor sets a reference line connecting a reference point with the search point. A candidate line setting processor sets candidate lines connecting the search point with the candidate points other than the search point. A candidate line selection processor selects, as a selected candidate line, the candidate line located only within a non-effective region. An angle calculation processor calculates an angle between the reference line and the selected candidate line. A cutting line setting processor sets a cutting line connecting the search point with the candidate point of the selected candidate line defining an angle with the reference line that is the smallest angle calculated.