/////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2018-     Equinor ASA
//
//  ResInsight 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.
//
//  ResInsight 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 at <http://www.gnu.org/licenses/gpl.html>
//  for more details.
//
/////////////////////////////////////////////////////////////////////////////////

#pragma once

#include "cvfBase.h"
#include "cvfVector3.h"
#include "cvfMatrix4.h"

//--------------------------------------------------------------------------------------------------
///                + p1 
///           t1 // 
///              |      + C   
///               \
///                + p2
//--------------------------------------------------------------------------------------------------
class RiaArcCurveCalculator
{
public:
    RiaArcCurveCalculator(cvf::Vec3d p1, cvf::Vec3d t1,  cvf::Vec3d p2);
    RiaArcCurveCalculator(cvf::Vec3d p1, double azi1, double inc1, cvf::Vec3d p2);

    enum CurveStatus
    {
        OK,
        OK_STRAIGHT_LINE,
        FAILED_INPUT_OVERLAP
    };
    
    CurveStatus curveStatus()    const { return m_curveStatus;}

    cvf::Mat4d  arcCS()          const { return m_arcCS; }
    double      radius()         const { return m_radius;}
    double      arcAngle()       const { return m_arcAngle; }
    double      arcLength()      const { return m_arcLength; }
    cvf::Vec3d  center()         const { return m_arcCS.translation();}
    cvf::Vec3d  normal()         const { return cvf::Vec3d(m_arcCS.col(2));}
                
    double      endAzimuth()     const { return m_endAzi; }
    double      endInclination() const { return m_endInc; }
    cvf::Vec3d  endTangent()     const { return m_endTangent; }
private:
    CurveStatus m_curveStatus;

    double      m_radius;
    double      m_arcLength;
    double      m_arcAngle;
    cvf::Mat4d  m_arcCS;

    double      m_endAzi;
    double      m_endInc;
    cvf::Vec3d  m_endTangent;
};