00001
00007 #ifndef P_VECTOR2_HH
00008 #define P_VECTOR2_HH
00009
00010 #include <iostream>
00011 #include <string>
00012 #include <blort/Recognizer3D/PNamespace.hh>
00013 #include <blort/Recognizer3D/Except.hh>
00014
00015 namespace P
00016 {
00017
00021 class Vector2
00022 {
00023 public:
00024 double x;
00025 double y;
00026
00027 Vector2();
00028 Vector2(double xx, double yy);
00029 void Set(double xi, double yi) {x = xi; y = yi;}
00030 Vector2& operator+=(const Vector2 &v);
00031 Vector2& operator-=(const Vector2 &v);
00032 Vector2& operator*=(double s);
00033 Vector2& operator/=(double s) throw(Except);
00034 double NormSquare() const;
00035 double LengthSquare() const;
00036 double Norm() const;
00037 double Length() const;
00038 void Normalise();
00039 Vector2 Normal();
00040 Vector2 NormalClockwise();
00041 Vector2 NormalAntiClockwise();
00042 };
00043
00044 Vector2 operator-(const Vector2 &v);
00045 bool operator==(const Vector2 &a, const Vector2 &b);
00046 bool operator!=(const Vector2 &a, const Vector2 &b);
00047 Vector2 operator+(const Vector2 &a, const Vector2 &b);
00048 Vector2 operator-(const Vector2 &a, const Vector2 &b);
00049 Vector2 operator*(const double s, const Vector2 &v);
00050 Vector2 operator*(const Vector2 &v, const double s);
00051 Vector2 operator/(const Vector2 &v, const double s) throw(Except);
00052 double PolarAngle(const Vector2 &v);
00053 double Length(const Vector2 &v);
00054 Vector2 Normalise(const Vector2 &v);
00055 double Dot(const Vector2 &a, const Vector2 &b);
00056 double Cross(const Vector2 &a, const Vector2 &b);
00057 bool LeftOf(const Vector2 &a, const Vector2 &b);
00058 bool CounterClockwiseTo(const Vector2 &a, const Vector2 &b);
00059 bool RightOf(const Vector2 &a, const Vector2 &b);
00060 bool ClockwiseTo(const Vector2 &a, const Vector2 &b);
00061 double DistanceSquare(const Vector2 &a, const Vector2 &b);
00062 double Distance(const Vector2 &a, const Vector2 &b);
00063 Vector2 LineIntersection(const Vector2 &p1, const Vector2 &d1,
00064 const Vector2 &p2, const Vector2 &d2) throw(Except);
00065 Vector2 LineIntersection(const Vector2 &p1, const Vector2 &d1,
00066 const Vector2 &p2, const Vector2 &d2, double *l1, double *l2) throw(Except);
00067 bool LinesIntersecting(const Vector2 &a1, const Vector2 &a2,
00068 const Vector2 &b1, const Vector2 &b2);
00069 bool LinesIntersecting(const Vector2 &a1, const Vector2 &a2,
00070 const Vector2 &b1, const Vector2 &b2, Vector2 &isct);
00071 double DistPointToLine(const Vector2 &q, const Vector2 &p, const Vector2 &d);
00072 double AbsDistPointToLine(const Vector2 &q, const Vector2 &p, const Vector2 &d);
00073 Vector2 Rotate(const Vector2 &a, double phi);
00074 Vector2 CircleCenter(const Vector2 &pi, const Vector2 &pj,
00075 const Vector2 &pk);
00076 Vector2 MidPoint(const Vector2 &a, const Vector2 &b);
00077
00078 ostream& operator<<(ostream &os, const Vector2 &v);
00079 istream& operator>>(istream &is, Vector2 &v) throw(Except);
00080 string& operator<<(string &s, const Vector2 &v);
00081 const string& operator>>(const string &s, Vector2 &v);
00082
00083 }
00084
00085 #include <blort/Recognizer3D/Vector2.ic>
00086 #endif
00087
