This class describes a triangle, represented by its corner points. It is intented for internal purposes. The triangle class is mainly used in class surface. More...

#include <triangle.h>

Public Member Functions
double	area ()
void	binRead (std::ifstream &is)
void	binWrite (std::ofstream &os)
int	calcIntersectionPoint (maths::Vector< double > r, maths::Vector< double > k, double &t, maths::Vector< double > &p, double eps=1E-5)
int	calcIntersectionPoint (maths::Vector< double > r, maths::Vector< double > k, maths::Vector< double > &p, double eps=1E-5)
	Calculates the intersection point between the triangle and a straight line represented by a point r and the direction vector k.
void	calcSideVectors ()
double	distance (maths::Vector< double > p, maths::Vector< double > k)
maths::Vector< double >	getnorm (void)
	returns the surface normal n
triangle &	operator= (const triangle &dr)
	Assignment operator.
maths::Vector< double > &	operator[] (int i)
const maths::Vector< double > &	operator[] (int i) const
	Operator, gives back the Position of i-th corner.
void	setnorm (maths::Vector< double > n)
	sets the surface normal n to the given value
void	setnorm (void)
	calculates the surface normal n with help of the corner points
	triangle ()
	triangle (const triangle &d)
	Copy constructor.
	triangle (maths::Vector< double > ip1, maths::Vector< double > ip2, maths::Vector< double > ip3, maths::Vector< double > P)
	triangle (maths::Vector< double > P1, maths::Vector< double > P2, maths::Vector< double > P3)
	~triangle ()
	Destructor.

Public Attributes
maths::Vector< double >	f [3]
	vectors which represents the sides of the triangle. For details refer to function calcSideVectors()
maths::Vector< double >	n
	normal of the triangle
maths::Vector< double >	P [3]
	corner points of the triangle
double	u
double	v
	auxiliary variables for internal use

Friends
class	surface

Detailed Description

This class describes a triangle, represented by its corner points. It is intented for internal purposes. The triangle class is mainly used in class surface.

Definition at line 12 of file triangle.h.

Constructor & Destructor Documentation

◆ triangle() [1/4]

GOAT::raytracing::triangle::triangle ( )

◆ triangle() [2/4]

GOAT::raytracing::triangle::triangle	(	maths::Vector< double >	P1,
		maths::Vector< double >	P2,
		maths::Vector< double >	P3 )

Constructor of the class triangle

Parameters

P1,P2,P3 : corner points of the triangle

◆ triangle() [3/4]

GOAT::raytracing::triangle::triangle	(	maths::Vector< double >	ip1,
		maths::Vector< double >	ip2,
		maths::Vector< double >	ip3,
		maths::Vector< double >	P )

Constructor of the class triangle, the triangle is represented by a reference point and the three distance vectors between the reference point and the three corners of the triangle.

Parameters

P0	reference point
ip1,ip2,ip3	: Vectors from the reference point P0 to the corner points

◆ triangle() [4/4]

GOAT::raytracing::triangle::triangle ( const triangle & d )

Copy constructor.

◆ ~triangle()

GOAT::raytracing::triangle::~triangle ( )

Destructor.

Member Function Documentation

◆ area()

double GOAT::raytracing::triangle::area ( )

inline

this function returns the surface area of the triangle

Definition at line 23 of file triangle.h.

◆ binRead()

void GOAT::raytracing::triangle::binRead ( std::ifstream & is )

◆ binWrite()

void GOAT::raytracing::triangle::binWrite ( std::ofstream & os )

◆ calcIntersectionPoint() [1/2]

int GOAT::raytracing::triangle::calcIntersectionPoint	(	maths::Vector< double >	r,
		maths::Vector< double >	k,
		double &	t,
		maths::Vector< double > &	p,
		double	eps = 1E-5 )

◆ calcIntersectionPoint() [2/2]

int GOAT::raytracing::triangle::calcIntersectionPoint	(	maths::Vector< double >	r,
		maths::Vector< double >	k,
		maths::Vector< double > &	p,
		double	eps = 1E-5 )

Calculates the intersection point between the triangle and a straight line represented by a point r and the direction vector k.

Parameters

r	reference point on the straight line
k	direction vector of the straight line
p	intersection point (return parameter)
eps	accuracy (optional)

Returns: 0: no intersection found 1: intersection point found

◆ calcSideVectors()

void GOAT::raytracing::triangle::calcSideVectors ( )

inline

Definition at line 31 of file triangle.h.

◆ distance()

double GOAT::raytracing::triangle::distance	(	maths::Vector< double >	p,
		maths::Vector< double >	k )

◆ getnorm()

maths::Vector< double > GOAT::raytracing::triangle::getnorm ( void )

returns the surface normal n

◆ operator=()

triangle & GOAT::raytracing::triangle::operator= ( const triangle & dr )

Assignment operator.

◆ operator[]() [1/2]

maths::Vector< double > & GOAT::raytracing::triangle::operator[] ( int i )

This operator returns the i-th corner point of the triangle

Parameters

i

Returns: Vector of the i-th corner

◆ operator[]() [2/2]

const maths::Vector< double > & GOAT::raytracing::triangle::operator[] ( int i ) const

Operator, gives back the Position of i-th corner.

This operator returns the i-th corner point of the triangle

Parameters

i

Returns: Vector of the i-th corner

◆ setnorm() [1/2]

void GOAT::raytracing::triangle::setnorm ( maths::Vector< double > n )

inline

sets the surface normal n to the given value

Definition at line 49 of file triangle.h.

◆ setnorm() [2/2]

void GOAT::raytracing::triangle::setnorm ( void )

calculates the surface normal n with help of the corner points

◆ surface

friend class surface

friend

Definition at line 81 of file triangle.h.

Member Data Documentation

◆ f

maths::Vector<double> GOAT::raytracing::triangle::f[3]

vectors which represents the sides of the triangle. For details refer to function calcSideVectors()

Definition at line 18 of file triangle.h.

◆ n

maths::Vector<double> GOAT::raytracing::triangle::n

normal of the triangle

Definition at line 17 of file triangle.h.

◆ P

maths::Vector<double> GOAT::raytracing::triangle::P[3]

corner points of the triangle

Definition at line 16 of file triangle.h.

◆ u

double GOAT::raytracing::triangle::u

Definition at line 15 of file triangle.h.

◆ v

double GOAT::raytracing::triangle::v

auxiliary variables for internal use

Definition at line 15 of file triangle.h.

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

raytracing/triangle.h

Public Member Functions

Public Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ triangle() [1/4]

◆ triangle() [2/4]

◆ triangle() [3/4]

◆ triangle() [4/4]

◆ ~triangle()

Member Function Documentation

◆ area()

◆ binRead()

◆ binWrite()

◆ calcIntersectionPoint() [1/2]

◆ calcIntersectionPoint() [2/2]

◆ calcSideVectors()

◆ distance()

◆ getnorm()

◆ operator=()

◆ operator[]() [1/2]

◆ operator[]() [2/2]

◆ setnorm() [1/2]

◆ setnorm() [2/2]

Friends And Related Symbol Documentation

◆ surface

Member Data Documentation

◆ f

◆ n

◆ P

◆ u

◆ v