DesolvExpFunc.cpp
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上传日期:2022-04-05
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- /*
- FastGrid (formerly AutoGrid)
- Copyright (C) 2009 The Scripps Research Institute. All rights reserved.
- Copyright (C) 2009 Masaryk University. All rights reserved.
- AutoGrid is a Trade Mark of The Scripps Research Institute.
- 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 2
- 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, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
- #include "autogrid.h"
- #include "DesolvExpFunc.h"
- DesolvExpFunc::DesolvExpFunc(double coeffDesolv)
- {
- func = new double[MAX_DIST];
- double minusInvTwoSigmaSquared;
- double sigma;
- // exponential function for receptor and ligand desolvation
- // note: the solvation term will not be smoothed
- sigma = 3.6;
- minusInvTwoSigmaSquared = -1 / (2 * sigma * sigma);
- for (int indexR = 1; indexR < MAX_DIST; indexR++)
- {
- double r = indexToAngstrom<double>(indexR);
- func[indexR] = exp(Mathd::Sqr(r) * minusInvTwoSigmaSquared);
- func[indexR] *= coeffDesolv;
- }
- }
- DesolvExpFunc::~DesolvExpFunc()
- {
- delete [] func;
- }