bool Ring::CalcCenter	(	Led	i,
		Led	j,
		Led	k
	)

Definition at line 16 of file Ring.cc.

References fMag, fR, fX, fY, Led::GetMag(), Led::GetX(), and Led::GetY().

Referenced by MCaos::CalcCenters(), and GetMag().

{
    double h1 = i.GetY() - j.GetY();

    if (h1==0)
    {
        std::swap(j, k);
        h1 = i.GetY() - j.GetY();
        if (h1==0)
        {
            cout << "Ring::CalcCenter: h1==0" <<endl;
            return false;
        }
    }

    double h2 = j.GetY() - k.GetY();

    if (h2==0)
    {
        std::swap(i, j);
        h2 = j.GetY() - k.GetY();
        if (h2==0)
        {
            cout << "Ring::CalcCenter: h2==0" << endl;
            return false;
        }
    }

    const double w1 = i.GetX() - j.GetX();
    const double w2 = j.GetX() - k.GetX();

    const double m1 = -w1/h1;
    const double m2 = -w2/h2;

    if (m2 - m1==0)
    {
        cout << "Ring::CalcCenter: All three points in a row! (m2-m1==0)" << endl;
        return false;
    }

    fX = ((m2*(j.GetX() + k.GetX()) + i.GetY() - k.GetY()        -m1*(i.GetX() + j.GetX()))/(m2-m1)/2);
    fY = ((m2*(i.GetY() + j.GetY()) + m1*m2*(k.GetX() - i.GetX())-m1*(j.GetY() + k.GetY()))/(m2-m1)/2);

    fR = hypot(fX - i.GetX(), fY - i.GetY());

    fMag = (i.GetMag() + j.GetMag() + k.GetMag())/3;

    return true;
}

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