Vec3f.hxx

   1 #ifndef VEC3F_HXX
   2 #define VEC3F_HXX
   3
   4 #include <cmath>
   5 #include <iostream>
   6
   7
   8 #ifndef MIN
   9 #define MIN(a,b) ((a)<(b)?(a):(b))
  10 #define MAX(a,b) ((a)>(b)?(a):(b))
  11 #endif
  12
  13
  14 #define Epsilon 1E-4
  15 #define Infinity HUGE_VAL
  16
  17 //! Standard operators and useful methods for 3d vectors
  18 //! Fill in the missing parts in Vec3f.cxx
  19 class Vec3f
  20 {
  21 public:
  22   Vec3f();
  23   Vec3f(float x, float y, float z);
  24
  25   ~Vec3f();
  26
  27   Vec3f(const Vec3f& o);
  28   Vec3f& operator=(const Vec3f& o);
  29
  30   //! dot product
  31   float operator|(const Vec3f& o) const;
  32   float dot(const Vec3f& o) const;
  33
  34   //! cross product
  35   Vec3f operator%(const Vec3f& o) const;
  36   Vec3f cross(const Vec3f& o) const;
  37
  38   //! normalize vector
  39   void normalize();
  40   //! length of a vector
  41   float norm() const;
  42
  43   //! (self-)multiply with scalar
  44   Vec3f operator*(const float t) const;
  45   Vec3f& operator*=(const float t);
  46
  47   //! (self-)division by scalar
  48   Vec3f operator/(const float t) const;
  49   Vec3f& operator/=(const float t);
  50
  51   //! vector (self-)addition
  52   Vec3f operator+(const Vec3f& o) const;
  53   Vec3f& operator+=(const Vec3f& o);
  54
  55   //! vector (self-)subtraction
  56   Vec3f operator-(const Vec3f& o) const;
  57   Vec3f& operator-=(const Vec3f& o);
  58
  59   //! component-wise multiplication of two vectors
  60   Vec3f operator*(const Vec3f& o) const;
  61   Vec3f& operator*=(const Vec3f& o);
  62
  63   //! component-wise division of two vectors
  64   Vec3f operator/(const Vec3f& o) const;
  65   Vec3f& operator/=(const Vec3f& o);
  66
  67   //! element access functions ( read-only and read-write )
  68   float operator[](unsigned int i) const;
  69   float& operator[](unsigned int i);
  70
  71   //! clamp each element to [0,1]
  72   void clamp();
  73 private:
  74   float m_values[3];
  75 };
  76
  77 inline std::ostream& operator<<(std::ostream& o, const Vec3f& v)
  78 {
  79   o << "(" << v[0] << "," << v[1] << "," << v[2] << ")";
  80   return o;
  81 }
  82
  83 #endif
  84
  85