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testHalfPlane.cpp
1 
34 #include <cstdio>
35 #include <cmath>
36 #include <fstream>
37 #include <vector>
38 #include <iostream>
39 #include <iterator>
40 
41 
42 
43 
44 #include "DGtal/base/Common.h"
45 #include "DGtal/base/Exceptions.h"
46 #include "DGtal/kernel/SpaceND.h"
47 #include "DGtal/kernel/domains/DomainPredicate.h"
48 #include "DGtal/kernel/domains/HyperRectDomain.h"
49 #include "DGtal/io/boards/Board2D.h"
50 
51 #include "DGtal/shapes/fromPoints/StraightLineFrom2Points.h"
52 #include "DGtal/shapes/fromPoints/Point2ShapePredicate.h"
53 
54 
55 using namespace DGtal;
56 
57 using namespace LibBoard;
58 
59 
60 
61 
62 int main(int , char **)
63 {
64 
65 
66 
67  typedef int Coordinate;
68  typedef PointVector<2,Coordinate> Point;
69  typedef StraightLineFrom2Points<Point> StraightLine;
70 
71  Point p(0,0);
72  Point q(5,2);
73  Point r1(2,0);
74  Point r2(0,2);
75  Point r3(10,4);
76 
77  StraightLine line(p,q);
78 
79 
80  //halfplane upward oriented and closed
82  typedef Point2ShapePredicate<StraightLine,true,true> UpClosedHalfPlane;
84 
85  //halfplane upward oriented and open
86  typedef Point2ShapePredicate<StraightLine,true,false> UpOpenHalfPlane;
87  //halfplane downward oriented and closed
88  typedef Point2ShapePredicate<StraightLine,false,true> DownClosedHalfPlane;
89 
90  //Location
91  trace.beginBlock("Creation of a halfplane and test some points");
92 
93  std::string res;
94 
95  trace.info() << "created line:" << std::endl;
96  trace.info() << line << std::endl;
97 
99  //line is an instance of StraightLine
100  UpClosedHalfPlane hp(line);
101  trace.info() << hp << std::endl;
102  trace.info() << "Does " << r1 << " belongs to hp (no)?" << std::endl;
103  res = hp(r1)?"yes":"no";
104  trace.info() << res << std::endl;
106 
107  trace.info() << "Does " << r2 << " belongs to hp (yes)?" << std::endl;
108  res = hp(r2)?"yes":"no";
109  trace.info() << res << std::endl;
110 
111  trace.info() << "Does " << r3 << " belongs to hp (yes)?" << std::endl;
112  res = hp(r3)?"yes":"no";
113  trace.info() << res << std::endl;
114 
115 
116  UpOpenHalfPlane hp2(line);
117  trace.info() << hp2 << std::endl;
118 
119  trace.info() << "Does " << r1 << " belongs to hp2 (no)?" << std::endl;
120  res = hp2(r1)?"yes":"no";
121  trace.info() << res << std::endl;
122 
123  trace.info() << "Does " << r2 << " belongs to hp2 (yes)?" << std::endl;
124  res = hp2(r2)?"yes":"no";
125  trace.info() << res << std::endl;
126 
127  trace.info() << "Does " << r3 << " belongs to hp2 (no)?" << std::endl;
128  res = hp2(r3)?"yes":"no";
129  trace.info() << res << std::endl;
130 
131  DownClosedHalfPlane hp3(line);
132  trace.info() << hp3 << std::endl;
133 
134  trace.info() << "Does " << r1 << " belongs to hp3 (yes)?" << std::endl;
135  res = hp3(r1)?"yes":"no";
136  trace.info() << res << std::endl;
137 
138  trace.info() << "Does " << r2 << " belongs to hp3 (no)?" << std::endl;
139  res = hp3(r2)?"yes":"no";
140  trace.info() << res << std::endl;
141 
142  trace.info() << "Does " << r3 << " belongs to hp3 (yes)?" << std::endl;
143  res = hp3(r3)?"yes":"no";
144  trace.info() << res << std::endl;
145 
146  trace.endBlock();
147 
148 
149  return 0;
150 }
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