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
|
/*
* 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#pragma once
/** \file
* \ingroup freestyle
* \brief Class to define Perlin noise
*/
#include "Geom.h"
#include "../system/FreestyleConfig.h"
#ifdef WITH_CXX_GUARDEDALLOC
# include "MEM_guardedalloc.h"
#endif
using namespace std;
namespace Freestyle {
#define _NOISE_B 0x100
using namespace Geometry;
/** Class to provide Perlin Noise functionalities */
class Noise {
public:
/** Builds a Noise object */
Noise(long seed = -1);
/** Destructor */
~Noise()
{
}
/** Returns a noise value for a 1D element */
float turbulence1(float arg, float freq, float amp, unsigned oct = 4);
/** Returns a noise value for a 2D element */
float turbulence2(Vec2f &v, float freq, float amp, unsigned oct = 4);
/** Returns a noise value for a 3D element */
float turbulence3(Vec3f &v, float freq, float amp, unsigned oct = 4);
/** Returns a smooth noise value for a 1D element */
float smoothNoise1(float arg);
/** Returns a smooth noise value for a 2D element */
float smoothNoise2(Vec2f &vec);
/** Returns a smooth noise value for a 3D element */
float smoothNoise3(Vec3f &vec);
private:
int p[_NOISE_B + _NOISE_B + 2];
float g3[_NOISE_B + _NOISE_B + 2][3];
float g2[_NOISE_B + _NOISE_B + 2][2];
float g1[_NOISE_B + _NOISE_B + 2];
/* UNUSED */
// int start;
#ifdef WITH_CXX_GUARDEDALLOC
MEM_CXX_CLASS_ALLOC_FUNCS("Freestyle:Noise")
#endif
};
} /* namespace Freestyle */
|
