b2dtuple.hxx

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#pragma once
 
#include <sal/types.h>
#include <basegfx/basegfxdllapi.h>
#include <basegfx/tuple/Tuple2D.hxx>
 
namespace basegfx
{
    class B2ITuple;
 
    class SAL_WARN_UNUSED B2DTuple : public Tuple2D<double>
    {
    public:
 
        B2DTuple()
         : Tuple2D(0.0, 0.0)
        {}
 
        B2DTuple(double fX, double fY)
            : Tuple2D(fX, fY)
        {}
 
        B2DTuple(Tuple2D<double> const& rTuple)
            : Tuple2D(rTuple)
        {}
 
        BASEGFX_DLLPUBLIC explicit B2DTuple(const B2ITuple& rTup);
 
        // operators
 
        B2DTuple operator-(void) const
        {
            return B2DTuple(-mfX, -mfY);
        }
 
        BASEGFX_DLLPUBLIC static const B2DTuple& getEmptyTuple();
    };
 
    // external operators
 
 
    inline B2DTuple absolute(const B2DTuple& rTup)
    {
        B2DTuple aAbs(
            fabs(rTup.getX()),
            fabs(rTup.getY()));
        return aAbs;
    }
 
    inline B2DTuple interpolate(const B2DTuple& rOld1, const B2DTuple& rOld2, double t)
    {
        if(rOld1 == rOld2)
        {
            return rOld1;
        }
        else if(0.0 >= t)
        {
            return rOld1;
        }
        else if(1.0 <= t)
        {
            return rOld2;
        }
        else
        {
            return B2DTuple(
                ((rOld2.getX() - rOld1.getX()) * t) + rOld1.getX(),
                ((rOld2.getY() - rOld1.getY()) * t) + rOld1.getY());
        }
    }
 
    inline B2DTuple average(const B2DTuple& rOld1, const B2DTuple& rOld2)
    {
        return B2DTuple(
            rtl_math_approxEqual(rOld1.getX(), rOld2.getX()) ? rOld1.getX() : (rOld1.getX() + rOld2.getX()) * 0.5,
            rtl_math_approxEqual(rOld1.getY(), rOld2.getY()) ? rOld1.getY() : (rOld1.getY() + rOld2.getY()) * 0.5);
    }
 
    inline B2DTuple operator*(const B2DTuple& rTup, double t)
    {
        B2DTuple aNew(rTup);
        aNew *= t;
        return aNew;
    }
 
    inline B2DTuple operator*(double t, const B2DTuple& rTup)
    {
        B2DTuple aNew(rTup);
        aNew *= t;
        return aNew;
    }
 
    inline B2DTuple operator/(const B2DTuple& rTup, double t)
    {
        B2DTuple aNew(rTup);
        aNew /= t;
        return aNew;
    }
 
    BASEGFX_DLLPUBLIC B2ITuple fround(const B2DTuple& rTup);
} // end of namespace basegfx
 
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