GEO::MeshSurfaceIntersection::RadialSort Class Reference

#include <geogram/mesh/mesh_surface_intersection.h>

Public Member Functions
	RadialSort (const MeshSurfaceIntersection &mesh)
	RadialSort constructor. More...
void	init (index_t h_ref)
	Initializes radial sorting around a given halfedge. More...
bool	operator() (index_t h1, index_t h2) const
	Compares two halfedges. More...
bool	degenerate () const
	Tests if a degeneracy was encountered. More...
void	test (index_t h1, index_t h2)

Static Public Member Functions
static exact::vec3	exact_direction (const ExactPoint &p1, const ExactPoint &p2)
	Computes a vector of arbitrary length with its direction given by two points. More...
static vec3I	exact_direction_I (const ExactPoint &p1, const ExactPoint &p2)
	Computes an interval vector of arbitrary length with its direction given by two points. More...

Protected Member Functions
Sign	h_orient (index_t h1, index_t h2) const
	Computes the relative orientations of two halfedges. More...
Sign	h_refNorient (index_t h2) const
	Computes the normal orientation of a halfedge relative to h_ref. More...

Detailed Description

A class for sorting triangles around their common radial edge.

Definition at line 429 of file mesh_surface_intersection.h.

Constructor & Destructor Documentation

RadialSort()

GEO::MeshSurfaceIntersection::RadialSort::RadialSort ( const MeshSurfaceIntersection &  mesh )

inline

RadialSort constructor.

Parameters

[in]

mesh

the MeshSurfaceIntersection

Definition at line 435 of file mesh_surface_intersection.h.

Member Function Documentation

degenerate()

bool GEO::MeshSurfaceIntersection::RadialSort::degenerate ( ) const

inline

Tests if a degeneracy was encountered.

Return values

true	if there were two coplanar triangles on the same side relative to h_ref
false	otherwise

Definition at line 463 of file mesh_surface_intersection.h.

exact_direction()

static exact::vec3 GEO::MeshSurfaceIntersection::RadialSort::exact_direction ( const ExactPoint &  p1, const ExactPoint &  p2  )

static

Computes a vector of arbitrary length with its direction given by two points.

Parameters

[in]

p1,p2

the two points in homogeneous coordinates

Returns

a vector in cartesian coordinates with the same direction and orientation as p2 - p1

exact_direction_I()

static vec3I GEO::MeshSurfaceIntersection::RadialSort::exact_direction_I ( const ExactPoint &  p1, const ExactPoint &  p2  )

static

Computes an interval vector of arbitrary length with its direction given by two points.

Parameters

[in]

p1,p2

the two points in homogeneous coordinates

Returns

an interval vector in cartesian coordinates with the same direction and orientation as p2 - p1

h_orient()

Sign GEO::MeshSurfaceIntersection::RadialSort::h_orient ( index_t  h1, index_t  h2  ) const

protected

Computes the relative orientations of two halfedges.

Parameters

[in]

h1,h2

the two halfedges

Return values

POSITIVE	if going from h1's triangle to h2's triangle is a left turn (with h_ref facing to you)
ZERO	if h1 and h2 have co-linear normals
NEGATIVE	otherwise

h_refNorient()

Sign GEO::MeshSurfaceIntersection::RadialSort::h_refNorient ( index_t  h2 ) const

protected

Computes the normal orientation of a halfedge relative to h_ref.

Returns

the sign of the dot product between h_ref's triangle normal and h2's triangle normal.

init()

void GEO::MeshSurfaceIntersection::RadialSort::init

(

index_t

h_ref

)

Initializes radial sorting around a given halfedge.

Parameters

[in]

h_ref

the reference halfedge

operator()()

bool GEO::MeshSurfaceIntersection::RadialSort::operator()	(	index_t	h1,
		index_t	h2
	)		const

Compares two halfedges.

Parameters

[in]

h1,h2

the two halfedges

Return values

true	if h1 should be before h2 in radial order
false	otherwise

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

• geogram/mesh/mesh_surface_intersection.h