mathutils.h

#ifndef MATHUTILS_H
#define MATHUTILS_H
 
#include <QtMath>
#include <QPoint>
 
namespace MathUtils
{
    inline qreal getDifferenceAngle(const QPointF a, const QPointF b)
    {
        return qAtan2(b.y() - a.y(), b.x() - a.x());
    }
 
    inline qreal map(qreal x, qreal inputMin, qreal inputMax, qreal outputMin, qreal outputMax)
    {
        qreal slope = (outputMax - outputMin) / (inputMax - inputMin);
        return outputMin + slope * (x - inputMin);
    }
 
    inline qreal normalize(qreal x, qreal min, qreal max)
    {
        return qAbs((x - max) / (min - max));
    }
}
 
#endif // MATHUTILS_H