vruiVec.h

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/* This file is part of COVISE.
 
   You can use it under the terms of the GNU Lesser General Public License
   version 2.1 or later, see lgpl-2.1.txt.
 
 * License: LGPL 2+ */
 
#ifndef VRUI_VEC_H
#define VRUI_VEC_H
 
#include <util/coTypes.h>
#include <math.h>
 
namespace vrui
{
 
class OPENVRUIEXPORT vruiVec
{
 
public:
    vruiVec(double x, double y, double z)
    {
        this->size = 3;
        vec[0] = x;
        vec[1] = y;
        vec[2] = z;
    }
 
    vruiVec(double x, double y, double z, double w)
    {
        this->size = 4;
        vec[0] = x;
        vec[1] = y;
        vec[2] = z;
        vec[3] = w;
    }
 
    vruiVec(int size)
    {
        this->size = size;
        this->vec = new double(size);
    }
 
    vruiVec(const vruiVec &second)
    {
        this->size = second.size;
        this->vec = new double(this->size);
        for (int ctr = 0; ctr < this->size; ++ctr)
        {
            this->vec[ctr] = second.vec[ctr];
        }
    }
 
    ~vruiVec();
 
    double &operator[](int index)
    {
        return vec[index];
    }
 
    double &operator[](int index) const
    {
        return vec[index];
    }
 
    vruiVec &normalize()
    {
 
        double sum = 0.0;
        for (int ctr = 0; ctr < this->size; ++ctr)
        {
            sum += vec[ctr] * vec[ctr];
        }
 
        sum = sqrt(sum);
 
        for (int ctr = 0; ctr < this->size; ++ctr)
        {
            vec[ctr] /= sum;
        }
 
        return *this;
    }
 
    int size;
    double *vec;
};
 
vruiVec operator-(const vruiVec &first, const vruiVec &second);
}
#endif