core/vgl/vgl_homg_plane_3d.h File Reference

homogeneous plane in 3D projective space More...

#include <vcl_iosfwd.h>
#include <vgl/vgl_fwd.h>
#include <vgl/vgl_vector_3d.h>
#include <vcl_cassert.h>

Go to the source code of this file.

Classes
class	vgl_homg_plane_3d< Type >
	Represents a homogeneous 3D plane. More...
Defines
#define	vgl_Abs(x)   (x<0?-x:x)
#define	VGL_HOMG_PLANE_3D_INSTANTIATE(T)   extern "please include vgl/vgl_homg_plane_3d.txx first"
Functions
template<class Type >
bool	is_ideal (vgl_homg_plane_3d< Type > const &p, Type tol=(Type) 0)
	Return true iff p is the plane at infinity.
template<class Type >
vcl_ostream &	operator<< (vcl_ostream &s, const vgl_homg_plane_3d< Type > &p)
template<class Type >
vcl_istream &	operator>> (vcl_istream &is, vgl_homg_plane_3d< Type > &p)

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Detailed Description

homogeneous plane in 3D projective space

Author:

Don HAMILTON Peter TU

    Modifications
     Peter Vanroose  6 July 2001: Now using vgl_vector_3d for normal direction
     Peter Vanroose  6 July 2001: Added normal(); replaced data_[4] by a_ b_ c_ d_
     Peter Vanroose  6 July 2001: Added constructor from 3 points
     CJB (Manchester) 16/03/2001: Tidied up the documentation
     Peter Vanroose 15 July 2002: Added constructor from two concurrent lines
     cbw (imorphics) 31 Mar 2008: Corrected constructor with normal and point (negated d) and added test
     Peter Vanroose 7 March 2009: Added normalize(), similar to the one in vgl_homg_line_2d<T>
   

Definition in file vgl_homg_plane_3d.h.

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Define Documentation

#define vgl_Abs

(

x

)

(x<0?-x:x)

#define VGL_HOMG_PLANE_3D_INSTANTIATE

(

T

)

extern "please include vgl/vgl_homg_plane_3d.txx first"

Definition at line 116 of file vgl_homg_plane_3d.h.

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Function Documentation

template<class Type >

bool is_ideal	(	vgl_homg_plane_3d< Type > const &	p,
		Type	tol = (Type)0
	)		[inline]

Return true iff p is the plane at infinity.

The method checks that max(|a|,|b|,|c|) <= tol * |d|

Definition at line 106 of file vgl_homg_plane_3d.h.

template<class Type >

vcl_ostream& operator<<	(	vcl_ostream &	s,
		const vgl_homg_plane_3d< Type > &	p
	)

Definition at line 95 of file vgl_homg_plane_3d.txx.

template<class Type >

vcl_istream& operator>>	(	vcl_istream &	is,
		vgl_homg_plane_3d< Type > &	p
	)

Definition at line 105 of file vgl_homg_plane_3d.txx.