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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
/*
This file is part of the VRender library.
Copyright (C) 2005 Cyril Soler (Cyril.Soler@imag.fr)
Version 1.0.0, released on June 27, 2005.
http://artis.imag.fr/Members/Cyril.Soler/VRender
VRender 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.
VRender 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 for more details.
You should have received a copy of the GNU General Public License
along with VRender; if not, write to the Free Software Foundation, Inc.,
51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/****************************************************************************
Copyright (C) 2002-2014 Gilles Debunne. All rights reserved.
This file is part of the QGLViewer library version 2.6.3.
http://www.libqglviewer.com - contact@libqglviewer.com
This file may be used under the terms of the GNU General Public License
versions 2.0 or 3.0 as published by the Free Software Foundation and
appearing in the LICENSE file included in the packaging of this file.
In addition, as a special exception, Gilles Debunne gives you certain
additional rights, described in the file GPL_EXCEPTION in this package.
libQGLViewer uses dual licensing. Commercial/proprietary software must
purchase a libQGLViewer Commercial License.
This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*****************************************************************************/
#include <math.h>
#include <assert.h>
#include "Primitive.h"
#include "Types.h"
using namespace vrender ;
using namespace std ;
Point::Point(const Feedback3DColor& f)
: _position_and_color(f)
{
}
const Vector3& Point::vertex(size_t) const
{
return _position_and_color.pos() ;
}
const Feedback3DColor& Point::sommet3DColor(size_t) const
{
return _position_and_color ;
}
const Feedback3DColor& Segment::sommet3DColor(size_t i) const
{
return ( (i&1)==0 )?P1:P2 ;
}
AxisAlignedBox_xyz Point::bbox() const
{
return AxisAlignedBox_xyz(_position_and_color.pos(),_position_and_color.pos()) ;
}
const Vector3& Segment::vertex(size_t i) const
{
return ( (i&1)==0 )?P1.pos():P2.pos() ;
}
AxisAlignedBox_xyz Segment::bbox() const
{
AxisAlignedBox_xyz B(P1.pos());
B.include(P2.pos()) ;
return B ;
}
const Feedback3DColor& Polygone::sommet3DColor(size_t i) const
{
return _vertices[i % nbVertices()] ;
}
const Vector3& Polygone::vertex(size_t i) const
{
return _vertices[i % nbVertices()].pos() ;
}
Polygone::Polygone(const vector<Feedback3DColor>& fc)
: _vertices(fc)
{
initNormal() ;
for(size_t i=0;i<fc.size();i++)
_bbox.include(fc[i].pos()) ;
}
AxisAlignedBox_xyz Polygone::bbox() const
{
return _bbox ;
}
double Polygone::equation(const Vector3& v) const
{
return v * _normal - _c ;
}
void Polygone::initNormal()
{
FLOAT anglemax = 0.0 ;
Vector3 normalmax = Vector3(0.0,0.0,0.0) ;
FLOAT v12norm = (vertex(1)-vertex(0)).norm() ;
for(size_t i=0;i<nbVertices();i++)
{
Vector3 v1(vertex(i)) ;
Vector3 v2(vertex(i+1));
Vector3 v3(vertex(i+2)) ;
Vector3 normal_tmp((v3-v2)^(v1-v2)) ;
FLOAT v32norm = (v3-v2).norm() ;
if(normal_tmp.z() > 0)
normal_tmp *= -1.0 ;
if((v32norm > 0.0)&&(v12norm > 0.0))
{
double anglemaxtmp = normal_tmp.norm()/v32norm/v12norm ;
if(anglemaxtmp > anglemax)
{
anglemax = anglemaxtmp ;
normalmax = normal_tmp ;
}
}
v12norm = v32norm ;
if(anglemax > FLAT_POLYGON_EPS) // slight optimization
break ;
}
if(normalmax.infNorm() != 0.0)
_normal = NVector3(normalmax) ;
anglefactor = anglemax ;
_c = _normal*vertex(0) ;
}
std::ostream& vrender::operator<<(std::ostream& o,const Feedback3DColor& f)
{
o << "(" << f.pos() << ") + (" << f.red() << "," << f.green() << "," << f.blue() << "," << f.alpha() << ")" << endl ;
return o ;
}
|
