1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71
|
/* Source http://paulbourke.net/geometry/polygonmesh/
with contribution by Alexander Motrichuk: InsidePolygonWithBounds.cpp
to deal with points exactly on a vertex
Any source code found in the previous site may be freely used provided
credits are given to the author. Credits follow:
*/
#/*##########################################################################
#
# Copyright Paul Bourke
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
#############################################################################*/
/* SOLUTION #1 (2D) */
#define MIN(x,y) (x < y ? x : y)
#define MAX(x,y) (x > y ? x : y)
#define INSIDE 1
#define OUTSIDE 0
typedef struct {
double x,y;
} Point;
typedef struct {
float x,y;
} PointF;
typedef struct {
int x,y;
} PointInt;
unsigned char _InsidePolygonF(Point *polygon, int N,\
PointF p, unsigned char bound_value);
void PointsInsidePolygonF(double *polygon_xy, int N_xy, \
float *points_xy, int N_points_xy,
int border_value, unsigned char *output);
unsigned char _InsidePolygonInt(Point *polygon, int N,\
PointInt p, unsigned char bound_value);
void PointsInsidePolygonInt(double *polygon_xy, int N_xy, \
int *points_xy, int N_points_xy,
int border_value, unsigned char *output);
unsigned char _InsidePolygon(Point *polygon, int N,\
Point p, unsigned char bound_value);
void PointsInsidePolygon(double *polygon_xy, int N_xy, \
double *points_xy, int N_points_xy,
int border_value, unsigned char *output);
|