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 #define max(a,b) MAX(a,b)
  14 #define min(a,b) MIN(a,b)
  15
  16 #define Epsilon 1E-4
  17 #define Infinity HUGE_VAL
  18
  19 //! Standard operators and useful methods for 3d vectors
  20 //! Fill in the missing parts in Vec3f.cxx
  21 class Vec3f
  22 {
  23 public:
  24   Vec3f();
  25   Vec3f(float x, float y, float z);
  26
  27   ~Vec3f();
  28
  29   Vec3f(const Vec3f& o);
  30   Vec3f& operator=(const Vec3f& o);
  31
  32   //! dot product
  33   float operator|(const Vec3f& o);
  34   float dot(const Vec3f& o);
  35
  36   //! cross product
  37   Vec3f operator%(const Vec3f& o);
  38   Vec3f cross(const Vec3f& o);
  39
  40   //! normalize vector
  41   void normalize();
  42   //! length of a vector
  43   float norm() const;
  44
  45   //! (self-)multiply with scalar
  46   Vec3f operator*(const float t) const;
  47   Vec3f& operator*=(const float t);
  48
  49   //! (self-)division by scalar
  50   Vec3f operator/(const float t) const;
  51   Vec3f& operator/=(const float t);
  52
  53   //! vector (self-)addition
  54   Vec3f operator+(const Vec3f& o) const;
  55   Vec3f& operator+=(const Vec3f& o);
  56
  57   //! vector (self-)subtraction
  58   Vec3f operator-(const Vec3f& o) const;
  59   Vec3f& operator-=(const Vec3f& o);
  60
  61   //! component-wise multiplication of two vectors
  62   Vec3f operator*(const Vec3f& o) const;
  63   Vec3f& operator*=(const Vec3f& o);
  64
  65   //! component-wise division of two vectors
  66   Vec3f operator/(const Vec3f& o) const;
  67   Vec3f& operator/=(const Vec3f& o);
  68
  69   //! element access functions ( read-only and read-write )
  70   float operator[](unsigned int i) const;
  71   float& operator[](unsigned int i);
  72
  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