| 123456789101112131415161718192021222324252627282930313233343536 |
- #ifndef _NUMmetrics_h_
- #define _NUMmetrics_h_
- /* NUMmetrics.h
- *
- * Copyright (C) 1992-2018 Paul Boersma
- *
- * This code is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This code is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- * See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this work. If not, see <http://www.gnu.org/licenses/>.
- */
- /********** Metrics **********/
- int NUMrotationsPointInPolygon
- (double x0, double y0, integer n, double x [], double y []);
- /*
- Returns the number of times that the closed polygon
- (x [1], y [1]), (x [2], y [2]),..., (x [n], y [n]), (x [1], y [1]) encloses the point (x0, y0).
- The result is positive if the polygon encloses the point in the
- anti-clockwise direction, and negative if the direction is clockwise.
- The result is 0 if the point is outside the polygon.
- If the point is on the polygon, the result is unpredictable.
- */
- /* End of file NUMmetrics.h */
- #endif
|
