Detailed Description

Class Triangle consists of a reference to a point vector and a vector that stores the indices in the point vector. A surface is composed by triangles. The class Surface stores the position of pointers to the points of triangles in the _pnt_ids vector.

Definition at line 26 of file Triangle.h.

#include <Triangle.h>

Public Member Functions
	Triangle (std::vector< Point * > const &pnt_vec, std::size_t pnt_a, std::size_t pnt_b, std::size_t pnt_c)

const std::size_t &	operator[] (std::size_t i) const
	const access operator to access the index of the i-th triangle point

const Point *	getPoint (std::size_t i) const
	const access operator to access the i-th triangle Point

bool	containsPoint (MathLib::Point3d const &q, double eps=std::numeric_limits< float >::epsilon()) const

Private Attributes
std::vector< Point * > const &	_pnts
	a vector of pointers to points the triangle is based on

std::array< std::size_t, 3 >	_pnt_ids
	position of pointers to the geometric points

Constructor & Destructor Documentation

◆ Triangle()

GeoLib::Triangle::Triangle	(	std::vector< Point * > const &	pnt_vec,
		std::size_t	pnt_a,
		std::size_t	pnt_b,
		std::size_t	pnt_c )

construction of object, initialization of reference to point vector, saves the three indices describing a triangle

Definition at line 20 of file Triangle.cpp.

    : _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());
}

Member Function Documentation

◆ containsPoint()

bool GeoLib::Triangle::containsPoint	(	MathLib::Point3d const &	q,
		double	eps = std::numeric_limits<float>::epsilon() ) const

Checks if point q is within the triangle, uses GeoLib::isPointInTriangle().

Parameters

q	The input point.
eps	Checks the 'epsilon'-neighbourhood

Returns: true, if point is in triangle, else false

Definition at line 29 of file Triangle.cpp.

{
    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);
}

References _pnt_ids, _pnts, and MathLib::isPointInTriangle().

◆ getPoint()

const Point * GeoLib::Triangle::getPoint ( std::size_t i ) const

inline

const access operator to access the i-th triangle Point

Definition at line 50 of file Triangle.h.

    {
        assert(i < 3);
        return _pnts[_pnt_ids[i]];
    }

References _pnt_ids, and _pnts.

Referenced by GeoLib::DuplicateGeometry::copySurfacesVector(), GeoLib::SurfaceGrid::sortTriangleInGridCells(), and GeoLib::IO::TINInterface::writeSurfaceAsTIN().

◆ operator[]()

const std::size_t & GeoLib::Triangle::operator[] ( std::size_t i ) const

inline

const access operator to access the index of the i-th triangle point

Definition at line 41 of file Triangle.h.

    {
        assert(i < 3);
        return _pnt_ids[i];
    }

References _pnt_ids.

Member Data Documentation

◆ _pnt_ids

std::array<std::size_t, 3> GeoLib::Triangle::_pnt_ids

private

position of pointers to the geometric points

Definition at line 71 of file Triangle.h.

Referenced by containsPoint(), getPoint(), and operator[]().

◆ _pnts

std::vector<Point*> const& GeoLib::Triangle::_pnts

private

a vector of pointers to points the triangle is based on

Definition at line 69 of file Triangle.h.

Referenced by containsPoint(), and getPoint().

The documentation for this class was generated from the following files:

GeoLib/Triangle.h
GeoLib/Triangle.cpp