#include <opennurbs_mesh.h>

Public Member Functions
	ON_MeshNgonIterator ()=default

	ON_MeshNgonIterator (const ON_MeshNgonIterator &src)

	ON_MeshNgonIterator (const class ON_Mesh *mesh)

	~ON_MeshNgonIterator ()=default

unsigned int	Count () const

const class ON_MeshNgon *	CurrentNgon ()
	Get the ngon most recently returned by FirstNgon() or NextNgon(). More...

ON_COMPONENT_INDEX	CurrentNgonComponentIndex () const

bool	CurrentNgonIsMeshFace () const

bool	CurrentNgonIsMeshNgon () const

const class ON_MeshNgon *	FirstNgon ()
	Returns the first ngon. More...

const ON_Mesh *	Mesh () const

const class ON_MeshNgon *	NextNgon ()
	Increments the iterator and returns the next ngon. More...

ON_MeshNgonIterator &	operator= (const ON_MeshNgonIterator &src)

void	Reset ()
	Sets the state of the iterator to the initial state that exists after construction. This is useful if the iterator has been used the get one or more elements and then the referenced mesh is modified or code wants to begin iteration again a used a call to NextNgon() to return the first element. More...

void	SetMesh (const class ON_Mesh mesh, const unsigned int meshfdex_to_meshngondex_map)

Static Public Attributes
static const ON_MeshNgonIterator	EmptyMeshNgonIterator

Constructor & Destructor Documentation

◆ ON_MeshNgonIterator() [1/3]

ON_MeshNgonIterator::ON_MeshNgonIterator ( )

default

◆ ~ON_MeshNgonIterator()

ON_MeshNgonIterator::~ON_MeshNgonIterator ( )

default

◆ ON_MeshNgonIterator() [2/3]

ON_MeshNgonIterator::ON_MeshNgonIterator ( const ON_MeshNgonIterator & src )

◆ ON_MeshNgonIterator() [3/3]

ON_MeshNgonIterator::ON_MeshNgonIterator ( const class ON_Mesh * mesh )

Parameters

mesh	[in] If the mesh has explicit ngons, then mesh->NgonMap() must return true;

Member Function Documentation

◆ Count()

unsigned int ON_MeshNgonIterator::Count ( ) const

Returns: Number of ngons that will be iterated over.

The count = explicit ngons + faces that are not in an ngon.

◆ CurrentNgon()

const class ON_MeshNgon* ON_MeshNgonIterator::CurrentNgon ( )

Get the ngon most recently returned by FirstNgon() or NextNgon().

Returns: Returns the ngon most recently returned by FirstNgon() or NextNgon().

If CurrentNgonIsMeshFace() is true after calling CurrentNgon(). the the returned ngon references a triangle or quad that is not part of an explicitly defined ngon in the mesh. If you need the information to persist after any subsequent calls to the iterator or after the destruction of the iterator, then you must make and manage a copy of the ngon.

◆ CurrentNgonComponentIndex()

ON_COMPONENT_INDEX ON_MeshNgonIterator::CurrentNgonComponentIndex ( ) const

◆ CurrentNgonIsMeshFace()

bool ON_MeshNgonIterator::CurrentNgonIsMeshFace ( ) const

Returns: If the current iterator ngon references an ON_MeshFace that is in m_mesh->m_F[] but is not explictly referenced by an ON_MeshNgon in ON_Mesh.m_Ngon[], then true is returned. In this case, the ngon's m_fi[] array has length 1 and contains the face's index, and the ngon's m_vi[] array is a copy of the faces's vi[] array. Otherwise false is returned.

◆ CurrentNgonIsMeshNgon()

bool ON_MeshNgonIterator::CurrentNgonIsMeshNgon ( ) const

Returns: If the current iterator ngon references an ON_MeshNgon that is in m_mesh->m_Ngon[], then true is returned. Otherwise false is returned.

◆ FirstNgon()

const class ON_MeshNgon* ON_MeshNgonIterator::FirstNgon ( )

Returns the first ngon.

Returns: The first ngon when iterating through the mesh triangles, quads and explicitly defined ngons.

If CurrentNgonIsMeshFace() is true after calling FirstNgon(). the the returned ngon references a triangle or quad that is not part of an explicitly defined ngon in the mesh. If you need the information to persist after any subsequent calls to the iterator or after the destruction of the iterator, then you must make and manage a copy of the ngon.

◆ Mesh()

const ON_Mesh* ON_MeshNgonIterator::Mesh ( ) const

Returns: The mesh being iterated.

◆ NextNgon()

const class ON_MeshNgon* ON_MeshNgonIterator::NextNgon ( )

Increments the iterator and returns the next ngon.

Returns: The next ngon when iterating through the mesh triangles, quads and explicitly defined ngons.

If CurrentNgonIsMeshFace() is true after calling NextNgon(). the the returned ngon references a triangle or quad that is not part of an explicitly defined ngon in the mesh. If you need the information to persist after any subsequent calls to the iterator or after the destruction of the iterator, then you must make and manage a copy of the ngon.

◆ operator=()

ON_MeshNgonIterator& ON_MeshNgonIterator::operator= ( const ON_MeshNgonIterator & src )

◆ Reset()

void ON_MeshNgonIterator::Reset ( )

Sets the state of the iterator to the initial state that exists after construction. This is useful if the iterator has been used the get one or more elements and then the referenced mesh is modified or code wants to begin iteration again a used a call to NextNgon() to return the first element.

◆ SetMesh()

void ON_MeshNgonIterator::SetMesh	(	const class ON_Mesh *	mesh,
		const unsigned int *	meshfdex_to_meshngondex_map
	)