InterpolateTrilinear.h

Go to the documentation of this file.

/******************************************************************************
* Copyright (c) ATTX INC 2025. All Rights Reserved.
*
* This software and associated documentation (the "Software") are the 
* proprietary and confidential information of ATTX, INC. The Software is 
* furnished under a license agreement between ATTX and the user organization 
* and may be used or copied only in accordance with the terms of the agreement.
* Refer to 'license/attx_license.adoc' for standard license terms.
*
* EXPORT CONTROL NOTICE: THIS SOFTWARE MAY INCLUDE CONTENT CONTROLLED UNDER THE
* INTERNATIONAL TRAFFIC IN ARMS REGULATIONS (ITAR) OR THE EXPORT ADMINISTRATION 
* REGULATIONS (EAR99). No part of the Software may be used, reproduced, or 
* transmitted in any form or by any means, for any purpose, without the express 
* written permission of ATTX, INC.
******************************************************************************/
#ifndef UTILS_INTERPOLATE_TRILINEAR_H
#define UTILS_INTERPOLATE_TRILINEAR_H
 
#include <vector>
 
#include "core/clockwerkerrors.h"
 
namespace warptwin {
    class InterpolateTrilinear
    {
    public:
        int setData(const std::vector<double> &valuesA, const std::vector<double> &valuesB, const std::vector<double> &valuesC, const std::vector<double> &valuesD);

        int getMinA(double& minA) const;

        int getMaxA(double& maxA) const;

        int getMinB(double& minB) const;

        int getMaxB(double& maxB) const;

        int getMinC(double& minC) const;

        int getMaxC(double& maxC) const;

        int interpolate(const double &a, const double &b, const double &c, double &interpolated_out);
 
    private:
        // coordinate grids
        std::vector<double> _a_grid;  
        std::vector<double> _b_grid;  
        std::vector<double> _c_grid;  
 
        std::vector<std::vector<std::vector<double>>> _out3d; 
 
        int _Na, _Nb, _Nc = 0; 

        int _findIntervalIndex(const std::vector<double> &vec, const double &value) const;

        double _interp(const double &v0, const double &v1, const double &t);

        double _frac(const double &x, const double &x0, const double &x1);
    };
}
 
#endif // UTILS_INTERPOLATE_TRILINEAR_H