Triangle.cpp

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// SPDX-FileCopyrightText: Copyright (c) OpenGeoSys Community (opengeosys.org)
// SPDX-License-Identifier: BSD-3-Clause
 
#include "Triangle.h"
 
#include <Eigen/Core>
 
#include "AnalyticalGeometry.h"
#include "MathLib/GeometricBasics.h"
#include "Point.h"
 
namespace GeoLib
{
Triangle::Triangle(std::vector<Point*> const& pnt_vec, std::size_t pnt_a,
                   std::size_t pnt_b, std::size_t pnt_c)
    : _pnts(pnt_vec), _pnt_ids({{pnt_a, pnt_b, pnt_c}})
{
    assert(!_pnts.empty());
    assert(pnt_a < _pnts.size() && pnt_b < _pnts.size() &&
           pnt_c < _pnts.size());
}
 
bool Triangle::containsPoint(MathLib::Point3d const& q, double eps) const
{
    GeoLib::Point const& a(*(_pnts[_pnt_ids[0]]));
    GeoLib::Point const& b(*(_pnts[_pnt_ids[1]]));
    GeoLib::Point const& c(*(_pnts[_pnt_ids[2]]));
    return MathLib::isPointInTriangle(q, a, b, c, eps);
}
}  // namespace GeoLib