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00001 /* 00002 $Id: vector.hxx,v 1.1 2002/11/20 00:46:11 grumbel Exp $ 00003 00004 ------------------------------------------------------------------------ 00005 ClanLib, the platform independent game SDK. 00006 00007 This library is distributed under the GNU LIBRARY GENERAL PUBLIC LICENSE 00008 version 2. See COPYING for details. 00009 00010 For a total list of contributers see CREDITS. 00011 00012 See http://www.clanlib.org 00013 ------------------------------------------------------------------------ 00014 00015 1999/06/19 Daniel Vogel 00016 00017 totally replaced old CL_Vector with this code 00018 */ 00019 00022 00023 #ifndef header_cl_vector 00024 #define header_cl_vector 00025 #include <iostream> 00026 00027 //: Vector class. 00028 //- <p>This class provides basic functions and operators for working with vectors.</p> 00029 class CL_Vector 00030 { 00031 public: 00033 //: x coordinate 00034 float x; 00035 //: y coordinate 00036 float y; 00037 //: z coordinate 00038 float z; 00039 //: w coordinate 00040 float w; 00041 00042 public: 00043 00045 //: Constructor that initializes a vector 00046 //param x: Initial x coordinate of vector. 00047 //param y: Initial y coordinate of vector. 00048 //param z: Initial z coordinate of vector. 00049 //param w: Initial w coordinate of vector. 00050 //param other: vector to copy construct from. 00051 CL_Vector(float x = 0.0, float y = 0.0, float z = 0.0, float w = 1.0); 00052 00053 CL_Vector(const CL_Vector &other); 00054 00056 //: Returns the (euclid) norm of the vector. 00057 //- <p>This function does not use the w coordinate of the vector. It only uses 00058 //- the x,y,z coordinates.</p> 00059 //return: the euclid norm of the vector (in R^3) 00060 float norm() const; 00061 00062 //: Normalizes the vector (not taking into account the w ordinate!) 00063 void normalize(); 00064 00065 //: Dot products this vector with an other vector. 00066 //param vector: Second vector used for the dot product. 00067 //return: The resulting dot product of the two vectors. 00068 float dot(const CL_Vector& vector) const; 00069 00070 //: Calculate the angle between this vector and an other vector. 00071 //param vector: Second vector used to calculate angle. 00072 //return: The angle between the two vectors. 00073 float angle(const CL_Vector& vector) const; 00074 00075 //: Calculate the cross product between this vector and an other vector. 00076 //param vector: Second vector used to perform the calculation. 00077 //return: The cross product of the two vectors. 00078 CL_Vector cross(const CL_Vector& vector) const; 00079 00080 //: Rotate vector around an axis. 00081 //param angle: Angle to rotate. 00082 //param axis: Rotation axis. 00083 //return: The resulting rotated vector. 00084 CL_Vector rotate(float angle, const CL_Vector& axis) const; 00085 00086 //: Rounds all components. 00087 void round(); 00088 00090 //: Scalar product (vector * scalar) 00091 //return: The scalar product 00092 CL_Vector operator * (float scalar) const; 00093 00094 //: Scalar product (scalar * vector) 00095 //return: The scalar product. 00096 friend CL_Vector operator * (float scalar, const CL_Vector& vector); 00097 00098 //: += operator. 00099 void operator += (const CL_Vector& v); 00100 00101 //: -= operator. 00102 void operator -= (const CL_Vector& v); 00103 00104 //: *= operator (scalar multiplication). 00105 void operator *= (float s); 00106 00107 //: + operator. 00108 CL_Vector operator + (const CL_Vector& v) const; 00109 00110 //: - operator. 00111 CL_Vector operator - (const CL_Vector& v) const; 00112 00113 //: unary - operator. 00114 CL_Vector operator - () const; 00115 00116 //: assignment operator. 00117 CL_Vector& operator = (const CL_Vector& v); 00118 00119 //: Returns true if current vector equals v. 00120 //param v: other vector. 00121 //return: true if v equals the current vector, false otherwise. 00122 int operator == (const CL_Vector& v) const; 00123 00124 //: Returns false if current vector equals v. 00125 //param v: other vector. 00126 //return: false if v equals the current vector, true otherwise. 00127 int operator != (const CL_Vector& v) const; 00128 00129 //: Returns reference to n-th ordinate (0. == x, 1. == y, ...). 00130 //param n: number of ordinate (starting with 0). 00131 //return: reference to the n-th ordinate. 00132 float& operator [] (int n); 00133 00134 //: cout's the x,y,z ordinates (meant for debugging). 00135 friend std::ostream& operator << (std::ostream&, const CL_Vector& v); 00136 }; 00137 00138 std::ostream& operator << (std::ostream& os, const CL_Vector& v); 00139 00140 #endif