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 typedef Vector Point;
  18
  19 class Vector
  20 {
  21         public:
  22                 Vector(double xx = 0, double yy = 0, double zz = 0);
  23                 Vector(Vector tail, Vector head);               // Create vector from two points
  24                 void SetAngleAndLength(double angle, double length);
  25                 Vector operator=(Vector const v);
  26                 Vector operator+(Vector const v);
  27                 Vector operator-(Vector const v);
  28                 Vector operator-(void);                         // Unary negation
  29                 Vector operator*(double const v);       // Vector times constant (double)
  30                 Vector operator*(float const v);        // Vector times constant (float)
  31                 Vector operator/(double const v);       // Vector divided by constant (double)
  32                 Vector operator/(float const v);        // Vector divided by constant (float)
  33                 Vector operator*(Vector const v);       // Vector product
  34                 double Dot(Vector const v);                     // Dot product
  35
  36                 Vector& operator*=(double const v);     // Vector times constant self-assignment
  37                 Vector& operator/=(double const v);     // Vector divided by constant self-assignment
  38                 Vector& operator+=(Vector const v);     // Vector plus Vector self-assignment
  39                 Vector& operator+=(double const v);     // Vector plus constant self-assignment
  40                 Vector& operator-=(Vector const v);     // Vector minus Vector self-assignment
  41                 Vector& operator-=(double const v);     // Vector minus constant self-assignment
  42
  43                 bool operator==(Vector const v);                // Check for equality
  44                 bool operator!=(Vector const v);                // Check for inequality
  45
  46                 Vector Unit(void);
  47                 double Magnitude(void);
  48                 double Angle(void);
  49                 bool isZero(double epsilon = 1e-6);
  50
  51                 // Class methods
  52
  53                 static double Dot(Vector v1, Vector v2);
  54                 static double Magnitude(Vector v1, Vector v2);
  55                 static double Angle(Point p1, Point p2);
  56                 static double Parameter(Vector v1, Vector v2, Vector p);
  57                 static Vector Normal(Vector v1, Vector v2);
  58                 static double AngleBetween(Vector a, Vector b);
  59
  60         public:
  61                 double x, y, z;
  62 };
  63
  64 #endif  // __VECTOR_H__