Geogram Version 1.8.5
A programming library of geometric algorithms
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principal_axes.h
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39
40#ifndef GEOGRAM_POINTS_PRINCIPAL_AXES
41#define GEOGRAM_POINTS_PRINCIPAL_AXES
42
48
55namespace GEO {
56
61 class GEOGRAM_API PrincipalAxes3d {
62 public:
67
71 void begin();
72
76 void end();
77
84 void add_point(const vec3& p, double weight = 1.0);
85
91 vec3 center() const {
92 return vec3(center_[0], center_[1], center_[2]);
93 }
94
101 const vec3& axis(index_t i) const {
102 return axis_[i];
103 }
104
111 double eigen_value(index_t i) const {
112 return eigen_value_[i];
113 }
114
120 vec3 normal() const {
121 return axis(2);
122 }
123
124 private:
125 double center_[3] ;
126 vec3 axis_[3] ;
127 double eigen_value_[3] ;
128
129 double M_[6] ;
130 int nb_points_ ;
131 double sum_weights_ ;
132 };
133}
134
135#endif
136
137
Common include file, providing basic definitions. Should be included before anything else by all head...
double eigen_value(index_t i) const
Gets one of the eigenvalues.
void begin()
Begins a principal axes estimation.
vec3 normal() const
Gets the estimated normal to the point cloud.
PrincipalAxes3d()
PrincipalAxes3d constructor.
void end()
Ends a principal axes estimation.
const vec3 & axis(index_t i) const
Gets one of the axes.
vec3 center() const
Gets the center.
void add_point(const vec3 &p, double weight=1.0)
Adds a point to the current principal axes estimation.
Geometric functions in 2d and 3d.
Generic logging mechanism.
Some utilities for matrix manipulation.
Global Vorpaline namespace.
Definition algorithm.h:64
geo_index_t index_t
The type for storing and manipulating indices.
Definition numeric.h:287
Types and functions for numbers manipulation.