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
|
/****************************************************************************
* 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. *
* *
****************************************************************************/
/****************************************************************************
****************************************************************************/
#ifndef __VCG_JUMPING_FACE_POS
#define __VCG_JUMPING_FACE_POS
#include <assert.h>
#include <vcg/simplex/face/pos.h>
namespace vcg
{
namespace face
{
/** \addtogroup face */
/*@{*/
template < class FACE_TYPE >
class JumpingPos : public Pos< FACE_TYPE >
{
public: // Typedefs
typedef FACE_TYPE FaceType;
typedef Pos<FaceType> PosType;
typedef JumpingPos<FaceType> JumpingPosType;
typedef typename FaceType::VertexType VertexType;
typedef typename VertexType::CoordType CoordType;
typedef typename VertexType::ScalarType ScalarType;
using Pos<FACE_TYPE>::f;
using Pos<FACE_TYPE>::z;
using Pos<FACE_TYPE>::FFlip;
public:
// Constructors
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) { }
/// Move the pos to a border (if exists). Return true if actually succeed to find a border
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
* _________
* /\ c | b /\
* / \ | / \
* / d \ | / a \
* /______\|/______\
* 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, b, c, ...
*/
bool NextFE()
{
if ( f==FFlip() ) // we are on a border
{
do {
PosType::FlipF();
PosType::FlipE();
} while (f!=FFlip());
PosType::FlipE();
return false;
}
else
{
PosType::FlipF();
PosType::FlipE();
return true;
}
}
};
/*@}*/
} // end of namespace face
} // end of namespace vcg
#endif // __VCG_JUMPING_FACE_POS
|
