Vec3f.hxx

   1 #ifndef VEC3F_HXX
   2 #define VEC3F_HXX
   3
   4 #include <cmath>
   5 #include <iostream>
   6
   7 #ifndef MIN
   8 #define MIN(a,b) ((a)<(b)?(a):(b))
   9 #define MAX(a,b) ((a)>(b)?(a):(b))
  10 #endif
  11
  12 #define max(a,b) MAX(a,b)
  13 #define min(a,b) MIN(a,b)
  14
  15 #define Epsilon 1E-4
  16 #define Infinity HUGE_VAL
  17
  18 // dimension
  19 #define DIM 3
  20
  21 //! Standard operators and useful methods for 3d vectors
  22 //! Fill in the missing parts in Vec3f.cxx
  23 class Vec3f {
  24 public:
  25         Vec3f();
  26         Vec3f(float x, float y, float z);
  27
  28         ~Vec3f();
  29
  30         Vec3f(const Vec3f& o);
  31         Vec3f& operator=(const Vec3f& o);
  32
  33         //! dot product
  34         float operator|(const Vec3f& o);
  35         float dot(const Vec3f& o);
  36
  37         //! cross product
  38         Vec3f operator%(const Vec3f& o);
  39         Vec3f cross(const Vec3f& o);
  40
  41         //! normalize vector
  42         void normalize();
  43         //! length of a vector
  44         float norm() const;
  45
  46         //! (self-)multiply with scalar
  47         Vec3f operator*(const float t) const;
  48         Vec3f& operator*=(const float t);
  49
  50         //! (self-)division by scalar
  51         Vec3f operator/(const float t) const;
  52         Vec3f& operator/=(const float t);
  53
  54         //! vector (self-)addition
  55         Vec3f operator+(const Vec3f& o) const;
  56         Vec3f& operator+=(const Vec3f& o);
  57
  58         //! vector (self-)subtraction
  59         Vec3f operator-(const Vec3f& o) const;
  60         Vec3f& operator-=(const Vec3f& o);
  61
  62         //! component-wise multiplication of two vectors
  63         Vec3f operator*(const Vec3f& o) const;
  64         Vec3f& operator*=(const Vec3f& o);
  65
  66         //! component-wise division of two vectors
  67         Vec3f operator/(const Vec3f& o) const;
  68         Vec3f& operator/=(const Vec3f& o);
  69
  70         //! element access functions ( read-only and read-write )
  71         float operator[](unsigned int i) const;
  72         float& operator[](unsigned int i);
  73 /*
  74         inline std::string& operator std::string() {
  75           std::string s = "(" + v[0] << "," << v[1] << "," << v[2] << ")");
  76           return std::string(
  77         }
  78 */
  79 private:
  80         float m_values[3];
  81 };
  82
  83 inline std::ostream& operator<<(std::ostream& o, const Vec3f& v) {
  84   o << "(" << v[0] << "," << v[1] << "," << v[2] << ")";
  85   return o;
  86 }
  87
  88 #endif
  89