VUFacet.cc

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// $Id: VUFacet.cc,v 1.11 2010-09-23 10:30:07 gcosmo Exp $
// GEANT4 tag $Name: not supported by cvs2svn $
//
// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
//
//
// Author: Marek Gayer, started from original implementation by P R Truscott, 2004
//

#include "VUFacet.hh"
#include "VUSolid.hh"

using namespace std;

bool VUFacet::operator== (const VUFacet &right) const
{
        double tolerance = kCarTolerance*kCarTolerance/4.0;

        if (GetNumberOfVertices() != right.GetNumberOfVertices())
                return false;
        else if ((GetCircumcentre()-right.GetCircumcentre()).Mag2() > tolerance)
                return false;
        else if (std::fabs((right.GetSurfaceNormal()).Dot(GetSurfaceNormal())) < 0.9999999999)
                return false;

        bool coincident  = true;
        int i = 0;
        do
        {
                coincident = false;
                int j   = 0; 
                do
                {
                        coincident = (GetVertex(i)-right.GetVertex(j)).Mag2() < tolerance;
                } while (!coincident && ++j < GetNumberOfVertices());
        } while (coincident && ++i < GetNumberOfVertices());

        return coincident;
}

//
void VUFacet::ApplyTranslation(const UVector3 v)
{
        int n = GetNumberOfVertices();
        for (int i = 0; i < n; ++i)
                SetVertex(i, GetVertex(i) + v);
}

//
std::ostream &VUFacet::StreamInfo(std::ostream &os) const
{
        os << endl;
        os << "*********************************************************************" << endl;
        os << "FACET TYPE       = " << GetEntityType() << endl;
        os << "ABSOLUTE VECTORS = " << endl;
        int n = GetNumberOfVertices();
        for (int i = 0; i < n; ++i)
                os << "P[" << i << "]      = " << GetVertex(i) << endl;

        /*
        os << "RELATIVE VECTORS = " << endl;
        for (vector<UVector3>::const_iterator it=E.begin(); it!=E.end(); it++)
        { os << "E[" << it-E.begin()+1 << "]      = " << *it << endl; }
        */

        os << "*********************************************************************" << endl;

        return os;
}

bool VUFacet::IsInside (const UVector3 &p) const
{
        UVector3 d =  p - GetVertex(0);
        double displacement = d.Dot(GetSurfaceNormal());
        return displacement <= 0.0;
}

const double VUFacet::dirTolerance = 1.0E-14;
const double VUFacet::kCarTolerance = VUSolid::Tolerance();