Initial commit
This commit is contained in:
parent
827fcf31b1
commit
807aec3803
|
|
@ -0,0 +1,178 @@
|
|||
/****************************************************************************
|
||||
* VCGLib o o *
|
||||
* Visual and Computer Graphics Library o o *
|
||||
* _ O _ *
|
||||
* Copyright(C) 2004 \/)\/ *
|
||||
* Visual Computing Lab /\/| *
|
||||
* ISTI - Italian National Research Council | *
|
||||
* \ *
|
||||
* All rights reserved. *
|
||||
* *
|
||||
* This program is free software; you can redistribute it and/or modify *
|
||||
* it under the terms of the GNU General Public License as published by *
|
||||
* the Free Software Foundation; either version 2 of the License, or *
|
||||
* (at your option) any later version. *
|
||||
* *
|
||||
* This program is distributed in the hope that it will be useful, *
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
|
||||
* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
|
||||
* for more details. *
|
||||
* *
|
||||
****************************************************************************/
|
||||
/****************************************************************************
|
||||
History
|
||||
|
||||
$Log: not supported by cvs2svn $
|
||||
|
||||
****************************************************************************/
|
||||
#ifndef __VCG_TRI_UPDATE_TOPOLOGY
|
||||
#define __VCG_TRI_UPDATE_TOPOLOGY
|
||||
|
||||
namespace vcg {
|
||||
namespace tri {
|
||||
|
||||
template <class UpdateMeshType>
|
||||
class UpdateTopology
|
||||
{
|
||||
|
||||
public:
|
||||
typedef UpdateMeshType MeshType;
|
||||
typedef typename MeshType::VertexType VertexType;
|
||||
typedef typename MeshType::VertexPointer VertexPointer;
|
||||
typedef typename MeshType::VertexIterator VertexIterator;
|
||||
typedef typename MeshType::FaceType FaceType;
|
||||
typedef typename MeshType::FacePointer FacePointer;
|
||||
typedef typename MeshType::FaceIterator FaceIterator;
|
||||
|
||||
|
||||
|
||||
/// Auxiliairy data structure for computing face face adjacency information.
|
||||
// It identifies and edge storing two vertex pointer and a face pointer where it belong.
|
||||
class PEdge
|
||||
{
|
||||
public:
|
||||
|
||||
VertexPointer * v[2]; // the two Vertex pointer are ordered!
|
||||
FacePointer * f; // the face where this edge belong
|
||||
int z; // index in [0..2] of the edge of the face
|
||||
|
||||
PEdge() {}
|
||||
|
||||
void Set( FacePointer * const pf, const int nz )
|
||||
{
|
||||
assert(pf!=0);
|
||||
assert(nz>=0);
|
||||
assert(nz<3);
|
||||
|
||||
v[0] = pf->V(nz);
|
||||
v[1] = pf->V((nz+1)%3);
|
||||
assert(v[0] != v[1]);
|
||||
|
||||
if( v[0] > v[1] ) swap(v[0],v[1]);
|
||||
f = pf;
|
||||
z = nz;
|
||||
}
|
||||
|
||||
inline bool operator < ( const PEdge & pe ) const
|
||||
{
|
||||
if( v[0]<pe.v[0] ) return true;
|
||||
else if( v[0]>pe.v[0] ) return false;
|
||||
else return v[1] < pe.v[1];
|
||||
}
|
||||
|
||||
inline bool operator <= ( const PEdge & pe ) const
|
||||
{
|
||||
if( v[0]<pe.v[0] ) return true;
|
||||
else if( v[0]>pe.v[0] ) return false;
|
||||
else return v[1] <= pe.v[1];
|
||||
}
|
||||
|
||||
inline bool operator > ( const PEdge & pe ) const
|
||||
{
|
||||
if( v[0]>pe.v[0] ) return true;
|
||||
else if( v[0]<pe.v[0] ) return false;
|
||||
else return v[1] > pe.v[1];
|
||||
}
|
||||
|
||||
inline bool operator >= ( const PEdge & pe ) const
|
||||
{
|
||||
if( v[0]>pe.v[0] ) return true;
|
||||
else if( v[0]<pe.v[0] ) return false;
|
||||
else return v[1] >= pe.v[1];
|
||||
}
|
||||
|
||||
inline bool operator == ( const PEdge & pe ) const
|
||||
{
|
||||
return v[0]==pe.v[0] && v[1]==pe.v[1];
|
||||
}
|
||||
|
||||
inline bool operator != ( const PEdge & pe ) const
|
||||
{
|
||||
return v[0]!=pe.v[0] || v[1]!=pe.v[1];
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
|
||||
void FaceFace(MeshType &m)
|
||||
{
|
||||
if(!m.HasTopologyFF())
|
||||
{
|
||||
vector<PEdge> e;
|
||||
FaceIterator pf;
|
||||
vector<PEdge>::iterator p;
|
||||
|
||||
if( fn == 0 ) return;
|
||||
|
||||
e.resize(fn*3); // Alloco il vettore ausiliario
|
||||
p = e.begin();
|
||||
for(pf=face.begin();pf!=face.end();++pf) // Lo riempio con i dati delle facce
|
||||
if( ! (*pf).IsDeleted() )
|
||||
for(int j=0;j<3;++j)
|
||||
{
|
||||
(*p).Set(&(*pf),j);
|
||||
++p;
|
||||
}
|
||||
assert(p==e.end());
|
||||
sort(e.begin(), e.end()); // Lo ordino per vertici
|
||||
|
||||
int ne = 0; // Numero di edge reali
|
||||
|
||||
vector<MPEDGE>::iterator pe,ps;
|
||||
for(ps = e.begin(),pe=e.begin();pe<=e.end();++pe) // Scansione vettore ausiliario
|
||||
{
|
||||
if( pe==e.end() || *pe != *ps ) // Trovo blocco di edge uguali
|
||||
{
|
||||
vector<MPEDGE>::iterator q,q_next;
|
||||
for (q=ps;q<pe-1;++q) // Scansione facce associate
|
||||
{
|
||||
assert((*q).z>=0);
|
||||
assert((*q).z< 3);
|
||||
q_next = q;
|
||||
++q_next;
|
||||
assert((*q_next).z>=0);
|
||||
assert((*q_next).z< 3);
|
||||
(*q).f->F(q->z) = (*q_next).f; // Collegamento in lista delle facce
|
||||
(*q).f->Z(q->z) = (*q_next).z;
|
||||
}
|
||||
assert((*q).z>=0);
|
||||
assert((*q).z< 3);
|
||||
(*q).f->F((*q).z) = ps->f;
|
||||
(*q).f->Z((*q).z) = ps->z;
|
||||
ps = pe;
|
||||
++ne; // Aggiorno il numero di edge
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
}; // end class
|
||||
|
||||
} // End namespace
|
||||
} // End namespace
|
||||
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue