1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153
|
/****************************************************************************
* VCGLib o o *
* Visual and Computer Graphics Library o o *
* _ O _ *
* Copyright(C) 2004-2016 \/)\/ *
* 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. *
* *
****************************************************************************/
#ifndef RINGWALKER_H
#define RINGWALKER_H
#include <vcg/simplex/face/jumping_pos.h>
namespace vcg
{
namespace tri
{
/** \addtogroup trimesh */
/*@{*/
/*@{*/
/** Class Mesh.
This is class for extracting n-ring of vertexes or faces, starting from a vertex of a mesh.
*/
template <class MeshType>
class Nring
{
public:
typedef typename MeshType::FaceType FaceType;
typedef typename MeshType::VertexType VertexType;
typedef typename MeshType::ScalarType ScalarType;
typedef typename MeshType::FaceIterator FaceIterator;
typedef typename MeshType::VertexIterator VertexIterator;
typedef typename MeshType::CoordType CoordType;
std::vector<VertexType*> allV;
std::vector<FaceType*> allF;
std::vector<VertexType*> lastV;
std::vector<FaceType*> lastF;
MeshType* m;
Nring(VertexType* v, MeshType* m) : m(m)
{
assert((unsigned)(v - &*m->vert.begin()) < m->vert.size());
insertAndFlag(v);
}
~Nring()
{
clear();
}
void insertAndFlag1Ring(VertexType* v)
{
insertAndFlag(v);
typename face::Pos<FaceType> p(v->VFp(),v);
assert(p.V() == v);
int count = 0;
face::Pos<FaceType> ori = p;
do
{
insertAndFlag(p.F());
p.FlipF();
p.FlipE();
assert(count++ < 100);
} while (ori != p);
}
void insertAndFlag(FaceType* f)
{
if (!f->IsV())
{
allF.push_back(f);
lastF.push_back(f);
f->SetV();
insertAndFlag(f->V(0));
insertAndFlag(f->V(1));
insertAndFlag(f->V(2));
}
}
void insertAndFlag(VertexType* v)
{
if (!v->IsV())
{
allV.push_back(v);
lastV.push_back(v);
v->SetV();
}
}
static void clearFlags(MeshType* m)
{
tri::UpdateFlags<MeshType>::VertexClearV(*m);
tri::UpdateFlags<MeshType>::FaceClearV(*m);
}
void clear()
{
for(unsigned i=0; i< allV.size(); ++i)
allV[i]->ClearV();
for(unsigned i=0; i< allF.size(); ++i)
allF[i]->ClearV();
allV.clear();
allF.clear();
}
void expand()
{
std::vector<VertexType*> lastVtemp = lastV;
lastV.clear();
lastF.clear();
for(typename std::vector<VertexType*>::iterator it = lastVtemp.begin(); it != lastVtemp.end(); ++it)
{
insertAndFlag1Ring(*it);
}
}
void expand(int k)
{
for(int i=0;i<k;++i)
expand();
}
};
}} // end namespace NAMESPACE
#endif // RINGWALKER_H
|