core/vgl/vgl_homg_line_3d_2_points.h File Reference

#include <vcl_iosfwd.h>
#include <vgl/vgl_homg_point_3d.h>

Go to the source code of this file.

Classes
class	vgl_homg_line_3d_2_points< Type >
	Represents a homogeneous 3D line using two points. More...
Defines
#define	l   vgl_homg_line_3d_2_points<Type>
#define	VGL_HOMG_LINE_3D_2_POINTS_INSTANTIATE(T)   extern "please include vgl/vgl_homg_line_3d_2_points.txx first"
Functions
template<class Type >
bool	is_ideal (l const &line, Type tol=(Type) 0)
	Return true iff line is at infinity.
template<class Type >
bool	collinear (l const &l1, vgl_homg_point_3d< Type > const &p)
	Does a line pass through a point, i.e., are the point and the line collinear?.
template<class Type >
bool	coplanar (l const &l1, l const &l2)
	Are two lines coplanar, i.e., do they intersect?.
template<class Type >
bool	concurrent (l const &l1, l const &l2)
	Are two lines concurrent, i.e., do they intersect?.
template<class Type >
bool	coplanar (l const &l1, vgl_homg_point_3d< Type > const &p1, vgl_homg_point_3d< Type > const &p2)
	Are two points coplanar with a line?.
template<class Type >
bool	coplanar (l const &l1, l const &l2, l const &l3)
	Are three lines coplanar, i.e., are they in a common plane?.
template<class Type >
vgl_homg_point_3d< Type >	intersection (l const &l1, l const &l2)
	Return the intersection point of two concurrent lines.
template<class Type >
bool	concurrent (l const &l1, l const &l2, l const &l3)
	Are three lines concurrent, i.e., do they pass through a common point?.
template<class Type >
vcl_ostream &	operator<< (vcl_ostream &s, l const &p)
	Write to stream (verbose).
template<class Type >
vcl_istream &	operator>> (vcl_istream &is, l &p)
	Read parameters from stream.

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Detailed Description

Author:

Don HAMILTON Peter TU François BERTEL

    Modifications
     Peter Vanroose -  4 July 2001 - constructors now use force_point2_infinite()
     Peter Vanroose - 27 June 2001 - Added operator==
     Peter Vanroose - 15 July 2002 - Added concurrent(), coplanar() and intersection()
   

Definition in file vgl_homg_line_3d_2_points.h.

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Define Documentation

#define l   vgl_homg_line_3d_2_points<Type>

Definition at line 83 of file vgl_homg_line_3d_2_points.h.

#define VGL_HOMG_LINE_3D_2_POINTS_INSTANTIATE

(

T

)

extern "please include vgl/vgl_homg_line_3d_2_points.txx first"

Definition at line 158 of file vgl_homg_line_3d_2_points.h.

---

Function Documentation

template<class Type >

bool collinear	(	l const &	l1,
		vgl_homg_point_3d< Type > const &	p
	)		[inline]

Does a line pass through a point, i.e., are the point and the line collinear?.

Definition at line 95 of file vgl_homg_line_3d_2_points.h.

template<class Type >

bool concurrent	(	l const &	l1,
		l const &	l2
	)		[inline]

Are two lines concurrent, i.e., do they intersect?.

Are two lines concurrent, i.e., do they intersect in a finite point?.

Definition at line 107 of file vgl_homg_line_3d_2_points.h.

template<class Type >

bool concurrent	(	l const &	l1,
		l const &	l2,
		l const &	l3
	)		[inline]

Are three lines concurrent, i.e., do they pass through a common point?.

Definition at line 136 of file vgl_homg_line_3d_2_points.h.

template<class Type >

bool coplanar	(	l const &	l1,
		l const &	l2
	)		[inline]

Are two lines coplanar, i.e., do they intersect?.

Are two lines coplanar, i.e., do they either intersect or are parallel?.

Definition at line 101 of file vgl_homg_line_3d_2_points.h.

template<class Type >

bool coplanar	(	l const &	l1,
		vgl_homg_point_3d< Type > const &	p1,
		vgl_homg_point_3d< Type > const &	p2
	)		[inline]

Are two points coplanar with a line?.

Definition at line 113 of file vgl_homg_line_3d_2_points.h.

template<class Type >

bool coplanar	(	l const &	l1,
		l const &	l2,
		l const &	l3
	)		[inline]

Are three lines coplanar, i.e., are they in a common plane?.

Definition at line 119 of file vgl_homg_line_3d_2_points.h.

template<class Type >

vgl_homg_point_3d< Type > intersection	(	l const &	l1,
		l const &	l2
	)

Return the intersection point of two concurrent lines.

template<class Type >

bool is_ideal	(	l const &	line,
		Type	tol = (Type)0
	)		[inline]

Return true iff line is at infinity.

Return true iff line is at infinity (which is always false).

Return true iff line is the line at infinity.

Definition at line 88 of file vgl_homg_line_3d_2_points.h.

template<class Type >

vcl_ostream& operator<<	(	vcl_ostream &	s,
		l const &	p
	)

Write to stream (verbose).

template<class Type >

vcl_istream& operator>>	(	vcl_istream &	is,
		l &	p
	)

Read parameters from stream.