GEO::PrincipalAxes3d Class Reference

#include <geogram/points/principal_axes.h>

Public Member Functions
	PrincipalAxes3d ()
	PrincipalAxes3d constructor.
void	begin ()
	Begins a principal axes estimation.
void	end ()
	Ends a principal axes estimation.
void	add_point (const vec3 &p, double weight=1.0)
	Adds a point to the current principal axes estimation.
vec3	center () const
	Gets the center.
const vec3 &	axis (index_t i) const
	Gets one of the axes.
double	eigen_value (index_t i) const
	Gets one of the eigenvalues.
vec3	normal () const
	Gets the estimated normal to the point cloud.

Detailed Description

PrincipalAxes3d enables the center and inertia axes of a cloud of 3d points to be computed.

Definition at line 61 of file principal_axes.h.

Member Function Documentation

add_point()

void GEO::PrincipalAxes3d::add_point	(	const vec3 &	p,
		double	weight = 1.0
	)

Adds a point to the current principal axes estimation.

Parameters

[in]	p	the current point
[in]	weight	an optional weight

axis()

const vec3 & GEO::PrincipalAxes3d::axis ( index_t  i ) const

inline

Gets one of the axes.

Can be called only after end_points().

Parameters

[in]

i

one of 0,1,2

Returns

the axis.

Definition at line 101 of file principal_axes.h.

center()

vec3 GEO::PrincipalAxes3d::center ( ) const

inline

Gets the center.

Can be called only after end_points().

Returns

the center of the point cloud.

Definition at line 91 of file principal_axes.h.

eigen_value()

double GEO::PrincipalAxes3d::eigen_value ( index_t  i ) const

inline

Gets one of the eigenvalues.

Can be called only after end_points().

Parameters

[in]

i

one of 0,1,2

Returns

the eigenvalue.

Definition at line 111 of file principal_axes.h.

normal()

vec3 GEO::PrincipalAxes3d::normal ( ) const

inline

Gets the estimated normal to the point cloud.

Equivalent to axis(2).

Returns

the estimated normal.

Definition at line 120 of file principal_axes.h.

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

• geogram/points/principal_axes.h