New Paste :: Recent Pastes:: Add Line Numbers
vector by baldurk
#ifndef VECTOR_H #define VECTOR_H #include "general.h" #include "debug.h" /*! * \file vec.h * \author <baldurk> * \date Fri Dec 30 21:46:59 2005 * * \brief Details of the Vector class */ /*! * \brief a templated Vector class * * This class is a vector templated to work for chars, floats. * It supports 1 to 4 dimensional vectors. However for 1 and 2 * dimensional vectors the other dimensions are 0. w is always 1. * Scaling (multiplying/dividing by a constant) as well as rotation, * multiplication/addition of vector signore w. normalisation will * also make sure w is 1. * * \todo add the dimension into the template. */ template <class T> class Vector { public: //! default constructor. Initialises to (0, 0, 0, 1) Vector() : x(0), y(0), z(0), w(1) {} //! constructor. Initialises to (x, 0, 0, 1) Vector(T X) : x(X), y(0), z(0), w(1) {} //! constructor. Initialises to (x, y, 0, 1) Vector(T X, T Y) : x(X), y(Y), z(0), w(1) {} //! constructor. Initialises to (x, y, z, 1) Vector(T X, T Y, T Z) : x(X), y(Y), z(Z), w(1) {} //! constructor. Initialises to (x, y, z, w) Vector(T X, T Y, T Z, T W) : x(X), y(Y), z(Z), w(W) {} //! normalises the vector, and scales it so that w is 1 inline Vector normalise() {FUNC("vec::normalise"); *this /= w; w = 1; *this /= length();ENDRETURN(*this);} //! returns the length of the vector inline float length() {FUNC("vec::length");ENDRETURN(sqrtf(sqrlength())); } /*! \brief Returns the square of the length. This is a lot faster to calculate than the real length, and if all you're doing is comparing one length with another, if the square of X is greater than the square of Y then X > Y. */ inline float sqrlength() {FUNC("vec::sqrlength"); ENDRETURN(x*x + y*y + z*z); } /*! * returns the dot product of this vector and another * * \param other the other vector */ inline float dotProduct(const Vector other) const {FUNC("vec:dot"); ENDRETURN(x * other.x + y * other.y + z * other.z); } /*! * returns the cross product of this vector and another * * \param other the other vector */ inline Vector crossProduct(const Vector other) const { FUNC("vec::cross"); ENDRETURN(Vector(y * other.z - z * other.y, z * other.x - x * other.z, x * other.y - y * other.x)); } //! equality operator bool operator == (const Vector vec) const { FUNC("vec::=="); if(vec.x == x && vec.y == y && vec.z == z && vec.w == w) ENDRETURN(true); ENDRETURN(false); } //! inequality operator bool operator != (const Vector vec) const { FUNC("vec::!="); if(vec.x == x && vec.y == y && vec.z == z && vec.w == w) ENDRETURN(false); ENDRETURN(true); } //! assignment operator Vector operator = (const Vector vec) { FUNC("vec::="); x = vec.x;y = vec.y;z = vec.z;w = vec.w; ENDRETURN(*this); } //! casting to an array operator T*() const { FUNC("vec::T*"); static T array[4]; array[0] = x; array[1] = y; array[2] = z; array[3] = w; ENDRETURN(array); } Vector operator * (const Vector vec) const {FUNC("vec::*v");ENDRETURN(Vector(x * vec.x, y * vec.y, z * vec.z, w));} Vector operator * (const T f) const { FUNC("vec::*f"); ENDRETURN(*this * Vector(f, f, f, 1)); } Vector operator / (const Vector vec) const {FUNC("vec::/v");ENDRETURN(Vector(x / vec.x, y / vec.y, z / vec.z, w));} Vector operator / (const T f) const { FUNC("vec::/f"); ENDRETURN(*this / Vector(f, f, f, 1)); } Vector operator + (const Vector vec) const { FUNC("vec::+v");ENDRETURN(Vector(x + vec.x, y + vec.y, z + vec.z, w));} Vector operator + (const T f) const { FUNC("vec::+f");ENDRETURN(*this + Vector(f, f, f, 0)); } Vector operator - (const Vector vec) const { FUNC("vec::-v");ENDRETURN(Vector(x - vec.x, y - vec.y, z - vec.z, w));} Vector operator - (const T f) const { FUNC("vec::-f");ENDRETURN(*this - Vector(f, f, f, 0)); } Vector operator -() const { FUNC("vec::-");ENDRETURN(Vector(-x, -y, -z, w)); } Vector operator -=(const Vector vec) { FUNC("vec::-=v"); ENDRETURN(*this = *this - vec); } Vector operator -=(const T f) { FUNC("vec::-=f"); ENDRETURN(*this = *this - f); } Vector operator +=(const Vector vec) { FUNC("vec::+=v"); ENDRETURN(*this = *this + vec); } Vector operator +=(const T f) { FUNC("vec::+=f"); ENDRETURN(*this = *this + f); } Vector operator *=(const Vector vec) { FUNC("vec::*=v"); ENDRETURN(*this = *this * vec); } Vector operator *=(const T f) { FUNC("vec::*=f"); ENDRETURN(*this = *this * f); } Vector operator /=(const Vector vec) { FUNC("vec::/=v"); ENDRETURN(*this = *this / vec); } Vector operator /=(const T f) { FUNC("vec::/=f"); ENDRETURN(*this = *this / f); } //! operator to perform the dot product float operator ^(const Vector other) const { FUNC("vec::^");ENDRETURN(dotProduct(other)); } //! operator to perform the cross product Vector operator |(const Vector other) const { FUNC("vec::|");ENDRETURN(crossProduct(other)); } T x, y, z, w; }; template <class T> ostream &operator <<(ostream &o, Vector <T> v) { FUNC("vec::<<"); ENDRETURN(o << "(" << v.x << ", " << v.y << ", " << v.z << ", " << v.w << ")"); } typedef Vector<float> Vectorf; typedef Vector<int> Vectori; #endif
