openEMS/FDTD/engine_interface_cylindrical_fdtd.cpp

/*
*	Copyright (C) 2011 Thorsten Liebig (Thorsten.Liebig@gmx.de)
*
*	This program is free software: you can redistribute it and/or modify
*	it under the terms of the GNU General Public License as published by
*	the Free Software Foundation, either version 3 of the License, or
*	(at your option) any later version.
*
*	This program is distributed in the hope that it will be useful,
*	but WITHOUT ANY WARRANTY; without even the implied warranty of
*	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*	GNU General Public License for more details.
*
*	You should have received a copy of the GNU General Public License
*	along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "engine_interface_cylindrical_fdtd.h"

Engine_Interface_Cylindrical_FDTD::Engine_Interface_Cylindrical_FDTD(Operator* op, Engine* eng) : Engine_Interface_FDTD(op,eng)
{
	m_Op_Cyl = dynamic_cast<Operator_Cylinder*>(op);
	if (m_Op_Cyl==NULL)
	{
		cerr << "Engine_Interface_Cylindrical_FDTD::Engine_Interface_Cylindrical_FDTD: Error: Operator is not a cylindrical operator! Exit!" << endl;
		exit(1);
	}
}

Engine_Interface_Cylindrical_FDTD::~Engine_Interface_Cylindrical_FDTD()
{
}

double* Engine_Interface_Cylindrical_FDTD::GetHField(const unsigned int* pos, double* out) const
{
	if ((m_Op_Cyl->GetClosedAlpha()==false) || (m_InterpolType!=NODE_INTERPOLATE))
		return Engine_Interface_FDTD::GetHField(pos, out);

	unsigned int iPos[] = {pos[0],pos[1],pos[2]};
	if (iPos[1]==0)
		iPos[1]=m_Op->GetNumberOfLines(1)-1;

	int nP,nPP;
	for (int n=0; n<3; ++n)
	{
		nP = (n+1)%3;
		nPP = (n+2)%3;
		if ((iPos[0]==m_Op->GetNumberOfLines(0)-1) || (iPos[2]==m_Op->GetNumberOfLines(2)-1) || (iPos[nP]==0) || (iPos[nPP]==0))
		{
			out[n] = 0;
			continue;
		}
		out[n]=m_Eng->GetCurr(n,iPos)/m_Op->GetEdgeLength(n,iPos,true);
		--iPos[nP];
		out[n]+=m_Eng->GetCurr(n,iPos)/m_Op->GetEdgeLength(n,iPos,true);
		--iPos[nPP];
		out[n]+=m_Eng->GetCurr(n,iPos)/m_Op->GetEdgeLength(n,iPos,true);
		++iPos[nP];
		out[n]+=m_Eng->GetCurr(n,iPos)/m_Op->GetEdgeLength(n,iPos,true);
		++iPos[nPP];
		out[n]/=4;
	}
	return out;
}

double* Engine_Interface_Cylindrical_FDTD::GetRawInterpolatedField(const unsigned int* pos, double* out, int type) const
{
	if (m_Op_Cyl->GetClosedAlpha()==false)
		return Engine_Interface_FDTD::GetRawInterpolatedField(pos,out,type);

	unsigned int iPos[] = {pos[0],pos[1],pos[2]};

	switch (m_InterpolType)
	{
	default:
	case NO_INTERPOLATION:
		return Engine_Interface_FDTD::GetRawInterpolatedField(pos,out,type);
		break;
	case NODE_INTERPOLATE:
		for (int n=0; n<3; ++n)
		{
			if (pos[1]==0)
				iPos[1]=m_Op->GetNumberOfLines(1)-1;
			return Engine_Interface_FDTD::GetRawInterpolatedField(iPos,out,type);
		}
		break;
	case CELL_INTERPOLATE:
		for (int n=0; n<3; ++n)
		{
			if (pos[1]==m_Op->GetNumberOfLines(1)-1)
				iPos[1]=0;
			return Engine_Interface_FDTD::GetRawInterpolatedField(iPos,out,type);
		}
		break;
	}

	//! this should not happen
	return Engine_Interface_FDTD::GetRawInterpolatedField(pos,out,type);
}