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git-svn-id: https://reactphysics3d.googlecode.com/svn/trunk@311 92aac97c-a6ce-11dd-a772-7fcde58d38e6

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This commit is contained in:
chappuis.daniel 2010-05-03 22:40:00 +00:00
parent f578eee6f5
commit bbe85ebced
2 changed files with 39 additions and 17 deletions
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54
sources/reactphysics3d/mathematics/Vector.h
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@ -21,6 +21,8 @@
#define VECTOR_H
// Libraries
#include "../typeDefinitions.h"
#include "mathematics_functions.h"
#include "exceptions.h"
#include <cmath>
#include <cassert>
@ -38,22 +40,23 @@ namespace reactphysics3d {
class Vector {
private :
double* tab; // Array of the vector's components
unsigned int nbComponent; // number of components in the vector
uint nbComponent; // number of components in the vector
public :
Vector(); // Constructor without argument
Vector(int n) throw(std::invalid_argument); // Constructor of the class Vector
Vector(const Vector& vector); // Copy-constructor of the class Vector
virtual ~Vector(); // Destructor of the class Vector
double getValue(int n) const throw(std::invalid_argument); // Get a component of the vector
void setValue(int n, double value) throw(std::invalid_argument); // Set the value of a component of the vector
int getNbComponent() const; // Get the number of components in the vector
double length() const; // Get the length of the vector
Vector getUnit() const throw(MathematicsException); // Return the corresponding unit vector
double scalarProduct(const Vector& vector) const throw(MathematicsException); // Scalar product of two vectors
Vector crossProduct(const Vector& vector) const throw(MathematicsException); // Cross product of two vectors (in 3D only)
void fillInSubVector(unsigned int index, const Vector& subVector); // Replace a part of the current vector with another sub-vector
bool isUnit() const; // Return true if the vector is unit and false otherwise
Vector(); // Constructor without argument
Vector(int n) throw(std::invalid_argument); // Constructor of the class Vector
Vector(const Vector& vector); // Copy-constructor of the class Vector
virtual ~Vector(); // Destructor of the class Vector
double getValue(int n) const throw(std::invalid_argument); // Get a component of the vector
void setValue(int n, double value) throw(std::invalid_argument); // Set the value of a component of the vector
int getNbComponent() const; // Get the number of components in the vector
double length() const; // Get the length of the vector
Vector getUnit() const throw(MathematicsException); // Return the corresponding unit vector
double scalarProduct(const Vector& vector) const throw(MathematicsException); // Scalar product of two vectors
Vector crossProduct(const Vector& vector) const throw(MathematicsException); // Cross product of two vectors (in 3D only)
void fillInSubVector(uint index, const Vector& subVector); // Replace a part of the current vector with another sub-vector
Vector getSubVector(uint index, uint nbElements) const throw(std::invalid_argument); // Return a sub-vector of the current vector
bool isUnit() const; // Return true if the vector is unit and false otherwise
// --- Overloaded operators --- //
Vector operator+(const Vector& vector) const throw(MathematicsException); // Overloaded operator for addition
@ -112,18 +115,35 @@ inline double Vector::length() const {
// Replace a part of the current vector with another sub-vector.
// The argument "rowIndex" is the row index where the subVector starts.
inline void Vector::fillInSubVector(unsigned int rowIndex, const Vector& subVector) {
inline void Vector::fillInSubVector(uint rowIndex, const Vector& subVector) {
assert(nbComponent-rowIndex >= subVector.nbComponent);
// For each value of the sub-vector
for (unsigned int i=0; i<subVector.nbComponent; ++i) {
for (uint i=0; i<subVector.nbComponent; ++i) {
tab[rowIndex + i] = subVector.getValue(i);
}
}
// Return a sub-vector of the current vector
inline Vector Vector::getSubVector(uint index, uint nbElements) const throw(std::invalid_argument) {
// Check if the arguments are valid
if (index < 0 || index+nbElements >= nbComponent) {
throw std::invalid_argument("Error : arguments are out of bounds");
}
// Compute the sub-vector
Vector subVector(nbElements);
for (uint i=0, j=index; i<nbElements; i++, j++) {
subVector.tab[i] = tab[j];
}
// Return the sub-vector
return subVector;
}
// Return true if the vector is unit and false otherwise
inline bool Vector::isUnit() const {
return (1.0 - EPSILON <= this->length() && this->length() <= 1.0 + EPSILON );
return approxEqual(1.0, length());
}
// Overloaded operator for multiplication between a number and a Vector (inline)

2
sources/reactphysics3d/reactphysics3d.h
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@ -30,4 +30,6 @@
// Alias to the ReactPhysics3D namespace
namespace rp3d = reactphysics3d;
// TODO : Replace in all files of the project "unsigned int" by "uint" (see typeDefinitions.h"
#endif