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#ifndef __GAUSSIAN_COMPUTATION_H__
#define __GAUSSIAN_COMPUTATION_H__
/*LICENSE_START*/
/*
* Copyright 1995-2002 Washington University School of Medicine
*
* http://brainmap.wustl.edu
*
* This file is part of CARET.
*
* CARET 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.
*
* CARET 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 CARET; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/*LICENSE_END*/
#include <QString>
#include <vector>
/// class for gaussian evaluation
class GaussianComputation {
public:
/// class for a point that will be evaluated
class Point3D {
public:
/// constructor
Point3D(const float xyzIn[3],
const float valueIn) {
xyz[0] = xyzIn[0];
xyz[1] = xyzIn[1];
xyz[2] = xyzIn[2];
value = valueIn;
weight = 0.0;
}
/// Destructor
~Point3D() { }
/// get the weight
float getWeight() const { return weight; }
protected:
/// coordinate
float xyz[3];
/// value
float value;
/// weight
float weight;
friend class GaussianComputation;
};
/// Constructor
GaussianComputation(const float normBelowCutoffIn = 2.0,
const float normAboveCutoffIn = 2.0,
const float sigmaNormIn = 2.0,
const float sigmaTangIn = 2.0,
const float tangentCutoffIn = 3.0);
/// destructor
~GaussianComputation();
/// evaluate for a point related to the reference point(returns weight)
float evaluate(const float referencePointXYZ[3],
const float referencePointNormal[3],
const float evaluationPoint[3]) const;
/// evaluate for a set of points related to the reference point
/// returns gaussian computed from all points. Each "points"
/// weight will also be set.
float evaluate(const float referencePointXYZ[3],
const float referencePointNormal[3],
std::vector<Point3D>& points) const;
/// tooltip text for norm below cutoff parameter
static QString tooltipTextForNormBelowCutoff();
/// tooltip text for norm above cutoff parameter
static QString tooltipTextForNormAboveCutoff();
/// tooltip text for tangent cutoff parameter
static QString tooltipTextForTangentCutoff();
/// tooltip text for sigma norm parameter
static QString tooltipTextForSigmaNorm();
/// tooltip text for sigma tang parameter
static QString tooltipTextForSigmaTang();
/// get default parameters
static void getDefaultParameters(float& normBelowCutoffOut,
float& normAboveCutoffOut,
float& sigmaNormOut,
float& sigmaTangOut,
float& tangentCutoffOut);
protected:
/// cutoff distance in direction opposite normal
/// ("under" a plane tangent to the reference point)
float normBelowCutoff;
/// cutoff distance in direction of normal
/// ("above" a plane tangent to the reference point)
float normAboveCutoff;
/// cutoff for distance along a plane tangent to the reference point
float tangentCutoff;
/// standard deviation for gaussian along the normal vector
float sigmaNorm;
/// standard deviation for gaussian along plane tangent to the reference point
float sigmaTang;
};
#endif // __GAUSSIAN_COMPUTATION_H__
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