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git-svn-id: https://reactphysics3d.googlecode.com/svn/trunk@35 92aac97c-a6ce-11dd-a772-7fcde58d38e6
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chappuis.daniel 2009-02-04 12:40:40 +00:00
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sources/reactphysics3d/Vector3D.h
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/****************************************************************************
* Copyright (C) 2009 Daniel Chappuis *
****************************************************************************
* This file is part of ReactPhysics3D. *
* *
* ReactPhysics3D is free software: you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation, either version 3 of the License, or *
* (at your option) any later version. *
* *
* ReactPhysics3D is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#ifndef VECTOR3D_H
#define VECTOR3D_H
// Libraries
#include <cmath>
#include "exceptions.h"
// ReactPhysics3D namespace
namespace reactphysics3d {
/* -------------------------------------------------------------------
Class Vector3D :
This classrepresents 3 dimensionnal vector in space.
-------------------------------------------------------------------
*/
class Vector3D {
private :
double x; // X component of the vector
double y; // Y component of the vector
double z; // Z component of the vector
public :
Vector3D(); // Constructor of the class Vector3D
Vector3D(double x, double y, double z); // Constructor with arguments
Vector3D(const Vector3D& vector); // Copy-constructor
virtual ~Vector3D(); // Destructor
double getX() const; // Get the x component of the vector
double getY() const; // Get the y component of the vector
double getZ() const; // Get the z component of the vector
void setX(double x); // Set the x component of the vector
void setY(double y); // Set the y component of the vector
void setZ(double z); // Set the z component of the vector
void setAllValues(double x, double y, double z); // Set all the values of the vector
double length() const; // Return the lenght of the vector
Vector3D getUnit() const throw(MathematicsException); // Return the corresponding unit vector
double scalarProduct(const Vector3D& vector) const; // Scalar product of two vectors
Vector3D crossProduct(const Vector3D& vector) const; // Cross product of two vectors
// --- Overloaded operators --- //
Vector3D operator+(const Vector3D& vector) const; // Overloaded operator for addition
Vector3D operator-(const Vector3D& vector) const ; // Overloaded operator for substraction
Vector3D operator*(double number) const; // Overloaded operator for multiplication with a number
Vector3D& operator=(const Vector3D& vector); // Overloaded operator for the assignement to a Vector
bool operator==(const Vector3D& vector) const; // Overloaded operator for the equality condition
};
// Get the x component of the vector (inline)
inline double Vector3D::getX() const {
return x;
}
// Get the y component of the vector (inline)
inline double Vector3D::getY() const {
return y;
}
// Get the z component of the vector (inline)
inline double Vector3D::getZ() const {
return z;
}
// Set the x component of the vector (inline)
inline void Vector3D::setX(double x) {
this->x = x;
}
// Set the y component of the vector (inline)
inline void Vector3D::setY(double y) {
this->y = y;
}
// Set the z component of the vector (inline)
inline void Vector3D::setZ(double z) {
this->z = z;
}
// Set all the values of the vector (inline)
inline void Vector3D::setAllValues(double x, double y, double z) {
this->x = x;
this->y = y;
this->z = z;
}
// Return the length of the vector (inline)
inline double Vector3D::length() const {
// Compute and return the length of the vector
return sqrt(x*x + y*y + z*z);
}
// Scalar product of two vectors (inline)
inline double Vector3D::scalarProduct(const Vector3D& vector) const {
// Compute and return the result of the scalar product
return (x * vector.x + y * vector.y + z * vector.z);
}
// Cross product of two vectors (inline)
inline Vector3D Vector3D::crossProduct(const Vector3D& vector) const {
// Compute and return the cross product
return Vector3D(y * vector.z - z * vector.y, z * vector.x - x * vector.z , x * vector.y - y * vector.x);
}
// Overloaded operator for multiplication between a number and a Vector3D (inline)
inline Vector3D operator * (double number, const Vector3D& vector) {
// Compute and return the result vector
return vector * number;
}
// Overloaded operator for the equality condition
inline bool Vector3D::operator == (const Vector3D& vector) const {
return (x == vector.x && y == vector.y && z == vector.z);
}
} // End of the ReactPhysics3D namespace
#endif