Shamusworld >> Repos - architektonas/blob - src/vector.h

   1 //
   2 // vector.h (Last modified: 6/28/2001)
   3 //
   4 // Various structures used for 3 dimensional imaging
   5 //
   6 // by James Hammons
   7 // (C) 2001, 2014 Underground Software
   8 //
   9
  10 #ifndef __VECTOR_H__
  11 #define __VECTOR_H__
  12
  13 // What we'll do here is create the vector type and use typedef to alias Point
  14 // to it. Yeah, that's it.
  15
  16 class Vector
  17 {
  18         public:
  19                 Vector(double xx = 0, double yy = 0, double zz = 0);
  20                 Vector(Vector tail, Vector head);               // Create vector from two points
  21                 void SetAngleAndLength(double angle, double length);
  22                 Vector operator=(Vector const v);
  23                 Vector operator+(Vector const v);
  24                 Vector operator-(Vector const v);
  25                 Vector operator-(void);                                 // Unary negation
  26                 Vector operator*(double const v);               // Vector times constant (double)
  27                 Vector operator*(float const v);                // Vector times constant (float)
  28                 Vector operator/(double const v);               // Vector divided by constant (double)
  29                 Vector operator/(float const v);                // Vector divided by constant (float)
  30                 Vector operator*(Vector const v);               // Vector product
  31                 double Dot(Vector const v);                             // Dot product
  32
  33                 Vector& operator*=(double const v);             // Vector times constant self-assignment
  34                 Vector& operator/=(double const v);             // Vector divided by constant self-assignment
  35                 Vector& operator+=(Vector const v);             // Vector plus Vector self-assignment
  36                 Vector& operator+=(double const v);             // Vector plus constant self-assignment
  37                 Vector& operator-=(Vector const v);             // Vector minus Vector self-assignment
  38                 Vector& operator-=(double const v);             // Vector minus constant self-assignment
  39
  40                 bool operator==(Vector const v);                // Check for equality
  41                 bool operator!=(Vector const v);                // Check for inequality
  42
  43                 Vector Unit(void);
  44                 double Magnitude(void);
  45                 double Angle(void);
  46                 bool isZero(double epsilon = 1e-6);
  47
  48                 // Class methods
  49
  50                 static double Dot(Vector v1, Vector v2);
  51                 static double Magnitude(Vector v1, Vector v2);
  52                 static double Parameter(Vector v1, Vector v2, Vector p);
  53                 static Vector Normal(Vector v1, Vector v2);
  54                 static double AngleBetween(Vector a, Vector b);
  55
  56         public:
  57                 double x, y, z;
  58 };
  59
  60 typedef Vector Point;
  61
  62 #endif  // __VECTOR_H__