A48::Face Class Reference

The class Face implements the face topological entity of the mesh 4-8. More...

#include <face.h>

Collaboration diagram for A48::Face:

[legend]List of all members.

Public Member Functions
	Face (Hedge *e0, Hedge *e1, Hedge *e2)
	The constructor creates a triangular face.
Hedge *	hedge (int k)
	Returns the half-edge of index k.
Vertex *	vertex (int k)
	Returns the vertex of index k.
int	level ()
	Returns face level.
bool	is_inbase ()
	Returns true if the face belongs to the level 0, else return false.
Hedge *	subd_edge ()
	Returns the face's subdivision edge.
Vertex *	weld_vertex ()
	Returns the face vertex that can be used for simplification.
Private Member Functions
void	set_hedge (int k, Hedge *h)
	Updates the half-edge of index k.
void	set_vertex (int k, Vertex *v)
	Updates the vertex of index k.
void	link_star_verts ()
	Links the vertices to the half-edges.
Face *	reuse (Hedge *e0, Hedge *e1, Hedge *e2)
	Redefines a face by specifing replacement half-edges.
Private Attributes
Hedge *	e_
	Points to the first half-egde of face's loop.

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Detailed Description

The class Face implements the face topological entity of the mesh 4-8.

Definition at line 17 of file face.h.

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Constructor & Destructor Documentation

A48::Face::Face (  Hedge *  e0, Hedge *  e1, Hedge *  e2 )  [inline]

The constructor creates a triangular face. Parameters: e0  First half-edge. e1  Second half-edge. e2  Third half-edge. Definition at line 27 of file face.h. References reuse(). { reuse(e0, e1, e2); };

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Member Function Documentation

Hedge * Face::hedge (  int  k  )

Returns the half-edge of index k. Returns: half-edge pointer. Definition at line 39 of file face.cpp. References e_, and A48::Hedge::next(). Referenced by link_star_verts(), set_hedge(), set_vertex(), A48::Mesh::split(), and vertex(). { switch (k) { case 0: return e_; case 1: return e_->next(); case 2: return e_->next()->next(); } throw Error("hedge index"); }

bool Face::is_inbase (   )

Returns true if the face belongs to the level 0, else return false. Returns true if the face belongs to level 0, else return false. Returns: boolean type (true or false). Definition at line 107 of file face.cpp. References A48::Vertex::level(), and vertex(). { return (vertex(0)->level() == 0 && vertex(1)->level() == 0 && vertex(2)->level() == 0); }

int Face::level (   )

Returns face level. Returns the face level. This level is determined by the highest resolution level of face vertices. Returns: face's resolution level. Definition at line 98 of file face.cpp. References vertex(). Referenced by A48::Mesh::split(). { return max(vertex(0)->level(), max(vertex(1)->level(),vertex(2)->level())); }

void Face::link_star_verts (   )  [private]

Links the vertices to the half-edges. Links vertices to half-edges. Builds canonical vertex indexing to work with stelar mesh. Definition at line 77 of file face.cpp. References hedge(), A48::Vertex::set_star(), and vertex(). { for (int k = 0; k < 3; k++) vertex(k)->set_star(hedge(NEXT3(k))); }

Face * Face::reuse (  Hedge *  e0, Hedge *  e1, Hedge *  e2 )  [private]

Redefines a face by specifing replacement half-edges. Updates the half-edges of the face. Make half-edge links to build a face loop. Links half-edges to face. Parameters: e0  First half-edge. e1  Second half-edge. e2  Third half-edge. Returns: face pointer. Definition at line 27 of file face.cpp. References e_, A48::Hedge::set_face(), and A48::Hedge::set_next(). Referenced by A48::Mesh::bisect(), Face(), A48::Mesh::flip(), A48::Mesh::split(), and A48::Mesh::weld(). { e_ = e0; e0->set_next(e1); e1->set_next(e2); e2->set_next(e0); e0->set_face(this); e1->set_face(this); e2->set_face(this); return this; }

void Face::set_hedge (  int  k, Hedge *  h )  [private]

Updates the half-edge of index k. Updates the half-edge of index k. Parameters: k  half-edge index, Valid values of k=[0,1,2]. h  Specify a new half-edge. Definition at line 64 of file face.cpp. References e_, hedge(), and A48::Hedge::set_next(). { Hedge *n = hedge(NEXT3(k)); Hedge *p = hedge(PREV3(k)); h->set_next(n); p->set_next(h); if (k == 0) e_ = h; }

void Face::set_vertex (  int  k, Vertex *  v )  [private]

Updates the vertex of index k. Updates the opposite vertex of half-edge specified by the index k. Parameters: k  índex of half-edge. Valid values of k=[0,1,2]. v  Specifies the new vertex. Definition at line 88 of file face.cpp. References hedge(), and A48::Hedge::set_org(). { hedge(PREV3(k))->set_org(v); }

Hedge* A48::Face::subd_edge (   )  [inline]

Returns the face's subdivision edge. Returns: half-edge pointer. Definition at line 45 of file face.h. Referenced by A48::Hedge::is_subdiv_itself(), A48::Mesh::is_triquad(), and A48::Mesh::refine(). { return hedge(0); };

Vertex * Face::vertex (  int  k  )

Returns the vertex of index k. Returns: vertex pointer. Definition at line 54 of file face.cpp. References hedge(), and A48::Hedge::org(). Referenced by is_inbase(), level(), link_star_verts(), and A48::Mesh::split(). { return hedge(PREV3(k))->org(); }

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

• face.h
• face.cpp

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