CGAL 6.2 - Shape Detection: EfficientRANSACTraits Concept Reference

CGAL 6.2 - Shape Detection

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EfficientRANSACTraits Concept Reference
Reference Manual » Efficient RANSAC » Concepts

## Definition

A concept that describes the set of types required by the `CGAL::Shape_detection::Efficient_RANSAC` and all RANSAC shape classes.

To avoid copying potentially large input data, the shape detection class `CGAL::Shape_detection::Efficient_RANSAC` will work on the input data directly and no internal copy will be made. For this reason, the input data has to be provided in form of a random access iterator. Point and normal property maps have to be provided to extract the points and the normals from the input.

Has models
  `CGAL::Shape_detection::Efficient_RANSAC_traits`

## Types
typedef unspecified_type | Point_3
| The point type.
typedef unspecified_type | Vector_3
| The vector type.
typedef unspecified_type | Sphere_3
| The sphere type, only required if you want to detect spheres or tori.
typedef unspecified_type | Line_3
| The line type, only required if you want to detect cylinders.
typedef unspecified_type | Plane_3
| The plane type, only required if you want to detect planes.
typedef unspecified_type | Point_2
| The 2D point type, only required if you want to detect tori.
typedef unspecified_type | Circle_2
| The circle type, only required if you want to detect tori.
typedef unspecified_type | Vector_2
| The 2D vector type, only required if you want to detect tori.
typedef unspecified_type | FT
| The number type of the Cartesian coordinates of types Point_3.
typedef unspecified_type | Input_range
| A model of the concept `Range` with random access iterators, providing input points and normals through the two property maps `Point_map` and `Normal_map`.
typedef unspecified_type | Point_map
| A model of `ReadablePropertyMap` with `std::iterator_traits<Input_range::iterator>::value_type` as key type and `Point_3` as value type.
typedef unspecified_type | Normal_map
| A model of `ReadablePropertyMap` with `std::iterator_traits<Input_range::iterator>::value_type` as key type and `Vector_3` as value type.
typedef unspecified_type | Search_traits
| A model of `SearchTraits` where `SearchTraits::point_d` is `Point_3`, `SearchTraits::Dimension` is `CGAL::Dimension_tag<3>`, and `SearchTraits::FT` is `FT`
typedef unspecified_type | Construct_point_3
| Function object type that provides `Point_3 operator()(Origin p)` returning the point with 0, 0, 0 as Cartesian coordinates and `Point_3 operator()(FT x, FT y, FT z)` returning the point with `x`, `y` and `z` as Cartesian coordinates.
typedef unspecified_type | Construct_vector_3
| Function object type that provides `Vector_3 operator()(Point_3 p1, Point_3 p2)` and `Vector_3 operator()(Origin p1, Point_3 p2)` returning the vector `p1p2`, `Vector_3 operator()(NULL_VECTOR)` returning the null vector, and `Vector_3 operator()(Line_3 l)` returning a vector having the same direction as `l` (this last one is only required if you want to detect cylinders).
typedef unspecified_type | Construct_sphere_3
| Function object type that provides `Sphere_3 operator()(Point_3 c, FT r)` returning the sphere of center `p` and radius `r`.
typedef unspecified_type | Construct_line_3
| Function object type that provides `Line_3 operator()(Point_3 p, Vector_3 d)` returning the line going through `p` in the direction of `d`.
typedef unspecified_type | Construct_point_on_3
| Function object type that provides `Point_3 operator()(Line_3 l, int i)` returning an arbitrary point on `l`.
typedef unspecified_type | Construct_point_2
| Function object type that provides `Point_2 operator()(FT x, FT y)` returning the 2D point with `x` and `y` as Cartesian coordinates.
typedef unspecified_type | Construct_vector_2
| Function object type that provides `Vector_2 operator()(Point_2 p1, Point_2 p2)` returning the vector `p1p2`, `Vector_2 operator()(NULL_VECTOR)` returning the null vector.
typedef unspecified_type | Construct_circle_2
| Function object type that provides `Circle_2 operator()(Point_2 p1, Point_2 p2, Point_2 p3)` returning the circle going through `p1`, `p2` and `p3`.
typedef unspecified_type | Compute_x_3
| Function object type that provides `FT operator()(Point_3 p)` and `FT operator()(Vector_3 v)` returning the `x` coordinate of a point and a vector respectively.
typedef unspecified_type | Compute_y_3
| Function object type that provides `FT operator()(Point_3 p)` and `FT operator()(Vector_3 v)` returning the `y` coordinate of a point and a vector respectively.
typedef unspecified_type | Compute_z_3
| Function object type that provides `FT operator()(Point_3 p)` and `FT operator()(Vector_3 v)` returning the `z` coordinate of a point and a vector respectively.
typedef unspecified_type | Compute_x_2
| Function object type that provides `FT operator()(Point_2 p)` and `FT operator()(Vector_2 v)` returning the `x` coordinate of a point and a vector respectively.
typedef unspecified_type | Compute_y_2
| Function object type that provides `FT operator()(Point_2 p)` and `FT operator()(Vector_2 v)` returning the `y` coordinate of a point and a vector respectively.
typedef unspecified_type | Compute_squared_length_3
| Function object type that provides `FT operator()(Vector_3 v)` returning the squared length of `v`.
typedef unspecified_type | Compute_squared_length_2
| Function object type that provides `FT operator()(Vector_2 v)` returning the squared length of `v`.
typedef unspecified_type | Construct_scaled_vector_3
| Function object type that provides `Vector_3 operator()(Vector_3 v, FT t)` returning the vector `t * v`.
typedef unspecified_type | Construct_sum_of_vectors_3
| Function object type that provides `Vector_3 operator()(Vector_3 v1, Vector_3 v2)` returning the `v1+v2`.
typedef unspecified_type | Construct_translated_point_3
| Function object type that provides: `Point_3 operator()(Point_3 p, Vector_3 v)` returning the point obtained by translating `p` by the vector `v`.
typedef unspecified_type | Compute_scalar_product_3
| Function object type that provides `FT operator()(Vector_3 v1, Vector_3 v2)` returning the scalar product of `v1` and `v2`.
typedef unspecified_type | Construct_cross_product_vector_3
| Function object type that provides `Vector_3 operator()(Vector_3 v1, Vector_3 v2)` returning the cross-product vector of `v1` and `v2`.
typedef unspecified_type | Construct_center_3
| Function object type that provides `Point_3 operator()(Sphere_3 s)` returning the center of the sphere `s`.
typedef unspecified_type | Construct_center_2
| Function object type that provides `Point_2 operator()(Circle_2 c)` returning the center of the circle `c`.
typedef unspecified_type | Compute_squared_radius_3
| Function object type that provides `FT operator()(Sphere_3 s)` returning the squared radius of the sphere `s`.
typedef unspecified_type | Compute_squared_radius_2
| Function object type that provides `FT operator()(Circle_2 c)` returning the squared radius of the circle `c`.
typedef unspecified_type | Collinear_2
| Function object type that provides `bool operator(Point_2 p, Point_2 q, Point_2 r)` returning true if the points `p`, `q`, and `r` are collinear and false otherwise.

## Access to Function Objects
Construct_point_3 | construct_point_3_object ()
Construct_vector_3 | construct_vector_3_object ()
Construct_sphere_3 | construct_sphere_3_object ()
| Only required if you want to detect spheres or tori.
Construct_line_3 | construct_line_3_object ()
| Only required if you want to detect cylinders.
Construct_point_on_3 | construct_point_on_3_object ()
| Only required if you want to detect cylinders.
Construct_point_2 | construct_point_2_object ()
| Only required if you want to detect tori.
Construct_vector_2 | construct_vector_2_object ()
| Only required if you want to detect tori.
Construct_circle_2 | construct_circle_2_object ()
| Only required if you want to detect tori.
Compute_x_3 | compute_x_3_object ()
Compute_y_3 | compute_y_3_object ()
Compute_z_3 | compute_z_3_object ()
Compute_x_2 | compute_x_2_object ()
| Only required if you want to detect tori.
Compute_y_2 | compute_y_2_object ()
| Only required if you want to detect tori.
Compute_squared_length_3 | compute_squared_length_3_object ()
Compute_squared_length_2 | compute_squared_length_2_object ()
| Only required if you want to detect tori.
Construct_scaled_vector_3 | construct_scaled_vector_3_object ()
Construct_sum_of_vectors_3 | construct_sum_of_vectors_3_object ()
Compute_scalar_product_3 | compute_scalar_product_3_object ()
Construct_cross_product_vector_3 | construct_cross_product_vector_3_object ()
Construct_translated_point_3 | construct_translated_point_3_object ()
Construct_center_3 | construct_center_3_object ()
| Only required if you want to detect spheres.
Construct_center_2 | construct_center_2_object ()
| Only required if you want to detect tori.
Compute_squared_radius_3 | compute_squared_radius_3_object ()
| Only required if you want to detect spheres or tori.
Compute_squared_radius_2 | compute_squared_radius_2_object ()
| Only required if you want to detect tori.
Collinear_2 | collinear_2_object ()
| Only required if you want to detect tori.

## Member Typedef Documentation

## ◆ Collinear_2

typedef unspecified_type EfficientRANSACTraits::Collinear_2

Function object type that provides `bool operator(Point_2 p, Point_2 q, Point_2 r)` returning true if the points `p`, `q`, and `r` are collinear and false otherwise.

Only required if you want to detect tori.

## ◆ Compute_squared_length_2

typedef unspecified_type EfficientRANSACTraits::Compute_squared_length_2

Function object type that provides `FT operator()(Vector_2 v)` returning the squared length of `v`.

Only required if you want to detect tori.

## ◆ Compute_squared_radius_2

typedef unspecified_type EfficientRANSACTraits::Compute_squared_radius_2

Function object type that provides `FT operator()(Circle_2 c)` returning the squared radius of the circle `c`.

Only required if you want to detect tori.

## ◆ Compute_squared_radius_3

typedef unspecified_type EfficientRANSACTraits::Compute_squared_radius_3

Function object type that provides `FT operator()(Sphere_3 s)` returning the squared radius of the sphere `s`.

Only required if you want to detect spheres or tori.

## ◆ Compute_x_2

typedef unspecified_type EfficientRANSACTraits::Compute_x_2

Function object type that provides `FT operator()(Point_2 p)` and `FT operator()(Vector_2 v)` returning the `x` coordinate of a point and a vector respectively.

Only required if you want to detect tori.

## ◆ Compute_y_2

typedef unspecified_type EfficientRANSACTraits::Compute_y_2

Function object type that provides `FT operator()(Point_2 p)` and `FT operator()(Vector_2 v)` returning the `y` coordinate of a point and a vector respectively.

Only required if you want to detect tori.

## ◆ Construct_center_2

typedef unspecified_type EfficientRANSACTraits::Construct_center_2

Function object type that provides `Point_2 operator()(Circle_2 c)` returning the center of the circle `c`.

Only required if you want to detect tori.

## ◆ Construct_center_3

typedef unspecified_type EfficientRANSACTraits::Construct_center_3

Function object type that provides `Point_3 operator()(Sphere_3 s)` returning the center of the sphere `s`.

Only required if you want to detect spheres or tori.

## ◆ Construct_circle_2

typedef unspecified_type EfficientRANSACTraits::Construct_circle_2

Function object type that provides `Circle_2 operator()(Point_2 p1, Point_2 p2, Point_2 p3)` returning the circle going through `p1`, `p2` and `p3`.

Only required if you want to detect tori.

## ◆ Construct_line_3

typedef unspecified_type EfficientRANSACTraits::Construct_line_3

Function object type that provides `Line_3 operator()(Point_3 p, Vector_3 d)` returning the line going through `p` in the direction of `d`.

Only required if you want to detect cylinders.

## ◆ Construct_point_2

typedef unspecified_type EfficientRANSACTraits::Construct_point_2

Function object type that provides `Point_2 operator()(FT x, FT y)` returning the 2D point with `x` and `y` as Cartesian coordinates.

Only required if you want to detect tori.

## ◆ Construct_point_on_3

typedef unspecified_type EfficientRANSACTraits::Construct_point_on_3

Function object type that provides `Point_3 operator()(Line_3 l, int i)` returning an arbitrary point on `l`.

`i` is not used and can be of any value. Only required if you want to detect cylinders.

## ◆ Construct_sphere_3

typedef unspecified_type EfficientRANSACTraits::Construct_sphere_3

Function object type that provides `Sphere_3 operator()(Point_3 c, FT r)` returning the sphere of center `p` and radius `r`.

Only required if you want to detect spheres or tori.

## ◆ Construct_vector_2

typedef unspecified_type EfficientRANSACTraits::Construct_vector_2

Function object type that provides `Vector_2 operator()(Point_2 p1, Point_2 p2)` returning the vector `p1p2`, `Vector_2 operator()(NULL_VECTOR)` returning the null vector.

Only required if you want to detect tori.