EggMesherEdge Class Reference

Represents one edge of a triangle, as used by the EggMesher to discover connected triangles. More...

#include "eggMesherEdge.h"

Public Types
typedef plist< EggMesherStrip * >	Strips

Public Member Functions
	EggMesherEdge (int vi_a, int vi_b)
	Defines an edge as a pair of vertices. More...
	EggMesherEdge (const EggMesherEdge &copy)
void	change_strip (EggMesherStrip *from, EggMesherStrip *to)
	Reparents the edge from strip "from" to strip "to". More...
EggMesherEdge *	common_ptr ()
	Returns an arbitrary pointer that is used to represent both this edge and its opposite. More...
LVecBase3d	compute_box (const EggVertexPool *vertex_pool) const
	Returns a 3-component vector that represents the lengths of the sides of the smalled axis-aligned box that contains the edge. More...
double	compute_length (const EggVertexPool *vertex_pool) const
	Returns the length of the edge in model units. More...
bool	contains_vertex (int vi) const
	Returns true if the edge contains the indicated vertex index, false otherwise. More...
bool	matches (const EggMesherEdge &other) const
	Returns true if this edge represents the same line segment as the other edge, in either direction. More...
bool	operator != (const EggMesherEdge &other) const
bool	operator< (const EggMesherEdge &other) const
	Defines an arbitrary ordering for edges, used for putting edges in a sorted container. More...
bool	operator== (const EggMesherEdge &other) const
void	output (std::ostream &out) const
	Formats the edge for output in some sensible way. More...
void	remove (EggMesherStrip *strip)
	Removes an edge from a particular strip. More...

Public Attributes
EggMesherEdge *	_opposite
Strips	_strips
int	_vi_a
int	_vi_b

Detailed Description

Represents one edge of a triangle, as used by the EggMesher to discover connected triangles.

The edge is actually represented as a pair of vertex indices into the same vertex pool.

Definition at line 29 of file eggMesherEdge.h.

Constructor & Destructor Documentation

EggMesherEdge()

EggMesherEdge::EggMesherEdge ( int  vi_a, int  vi_b  )

inline

Defines an edge as a pair of vertices.

The _opposite pointer should be filled in explicitly by the caller.

Definition at line 19 of file eggMesherEdge.I.

Member Function Documentation

change_strip()

void EggMesherEdge::change_strip	(	EggMesherStrip *	from,
		EggMesherStrip *	to
	)

Reparents the edge from strip "from" to strip "to".

Definition at line 33 of file eggMesherEdge.cxx.

common_ptr()

EggMesherEdge * EggMesherEdge::common_ptr ( )

inline

Returns an arbitrary pointer that is used to represent both this edge and its opposite.

this->common_ptr() is guaranteed to be the same as this->_opposite->common_ptr().

Definition at line 60 of file eggMesherEdge.I.

compute_box()

LVecBase3d EggMesherEdge::compute_box ( const EggVertexPool *  vertex_pool ) const

inline

Returns a 3-component vector that represents the lengths of the sides of the smalled axis-aligned box that contains the edge.

That is, the projection the edge onto each axis.

Definition at line 108 of file eggMesherEdge.I.

References EggVertex::get_pos3(), and EggVertexPool::get_vertex().

compute_length()

double EggMesherEdge::compute_length ( const EggVertexPool *  vertex_pool ) const

inline

Returns the length of the edge in model units.

Definition at line 96 of file eggMesherEdge.I.

References EggVertex::get_pos3(), and EggVertexPool::get_vertex().

Referenced by EggMesherStrip::pick_mate().

contains_vertex()

bool EggMesherEdge::contains_vertex ( int  vi ) const

inline

Returns true if the edge contains the indicated vertex index, false otherwise.

Definition at line 40 of file eggMesherEdge.I.

Referenced by EggMesherStrip::find_adjacent_edge(), and EggMesherStrip::find_opposite_edge().

matches()

bool EggMesherEdge::matches ( const EggMesherEdge &  other ) const

inline

Returns true if this edge represents the same line segment as the other edge, in either direction.

Definition at line 49 of file eggMesherEdge.I.

Referenced by EggMesherStrip::mate_strips().

operator<()

bool EggMesherEdge::operator< ( const EggMesherEdge &  other ) const

inline

Defines an arbitrary ordering for edges, used for putting edges in a sorted container.

Definition at line 85 of file eggMesherEdge.I.

output()

void EggMesherEdge::output

(

std::ostream &

out

)

const

Formats the edge for output in some sensible way.

Definition at line 55 of file eggMesherEdge.cxx.

remove()

void EggMesherEdge::remove

(

EggMesherStrip *

strip

)

Removes an edge from a particular strip.

Definition at line 21 of file eggMesherEdge.cxx.

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

• panda/src/egg/eggMesherEdge.h
• panda/src/egg/eggMesherEdge.cxx
• panda/src/egg/eggMesherEdge.I