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Big change. removed nexte. 

Now the function is NextFE.
added find border function
This commit is contained in:
Paolo Cignoni 2008-04-11 10:13:01 +00:00
parent 0caa683764
commit 36361be798
1 changed files with 32 additions and 16 deletions
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46
vcg/simplex/face/jumping_pos.h
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@ -53,11 +53,26 @@ namespace vcg
using Pos<FACE_TYPE>::FFlip;
public:
// Constructors
JumpingPos() : Pos<FACE_TYPE>() { m_AlreadyJumped = false; }
JumpingPos(FaceType * const pFace, int const z, VertexType * const pVertex) : Pos<FACE_TYPE>(pFace, z, pVertex) { m_AlreadyJumped = false; }
JumpingPos(FaceType * const pFace, int const z) : Pos<FACE_TYPE>(pFace, z) { m_AlreadyJumped = false; }
JumpingPos(FaceType * const pFace, VertexType * const pVertex) : Pos<FACE_TYPE>(pFace, pVertex) { m_AlreadyJumped = false; }
JumpingPos() : Pos<FACE_TYPE>() { }
JumpingPos(FaceType * const pFace, int const z, VertexType * const pVertex) : Pos<FACE_TYPE>(pFace, z, pVertex) { }
JumpingPos(FaceType * const pFace, int const z) : Pos<FACE_TYPE>(pFace, z) { }
JumpingPos(FaceType * const pFace, VertexType * const pVertex) : Pos<FACE_TYPE>(pFace, pVertex) { }
bool FindBorder()
{
PosType startPos=*this;
do
{
if(f==FFlip() ) {
PosType::FlipE();
return true; // we are on a border
}
PosType::FlipF();
PosType::FlipE();
} while(*this != startPos);
return false;
}
/*!
* Returns the next edge skipping the border
@ -68,25 +83,26 @@ namespace vcg
* /______\|/______\
* v
* In this example, if a and d are of-border and the pos is iterating counterclockwise, this method iterate through the faces incident on vertex v,
* producing the sequence a, b, c, d, a.
* producing the sequence a, b, c, d, a, b, c, ...
*/
void NextE()
bool NextFE()
{
if (face::IsBorder(*f,z) && !m_AlreadyJumped)
if ( f==FFlip() ) // we are on a border
{
do PosType::NextE();
while (f!=FFlip());
m_AlreadyJumped = true;
do {
PosType::FlipF();
PosType::FlipE();
} while (f!=FFlip());
PosType::FlipE();
return false;
}
else
{
PosType::NextE();
m_AlreadyJumped = false;
PosType::FlipF();
PosType::FlipE();
return true;
}
}
protected:
bool m_AlreadyJumped;
};
/*@}*/