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Diffstat (limited to 'source/blender/freestyle/intern/geometry/Noise.h')
-rwxr-xr-x | source/blender/freestyle/intern/geometry/Noise.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/source/blender/freestyle/intern/geometry/Noise.h b/source/blender/freestyle/intern/geometry/Noise.h new file mode 100755 index 00000000000..00cebbb451e --- /dev/null +++ b/source/blender/freestyle/intern/geometry/Noise.h @@ -0,0 +1,77 @@ +// +// Filename : Noise.h +// Author(s) : Emmanuel Turquin +// Purpose : Class to define Perlin noise +// Date of creation : 12/01/2004 +// +/////////////////////////////////////////////////////////////////////////////// + + +// +// Copyright (C) : Please refer to the COPYRIGHT file distributed +// with this source distribution. +// +// 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +// +/////////////////////////////////////////////////////////////////////////////// + +#ifndef NOISE_H +# define NOISE_H + + +# include "../system/FreestyleConfig.h" +# include "Geom.h" + +#define _Noise_B_ 0x100 + +using namespace Geometry; +using namespace std; + +/*! Class to provide Perlin Noise functionalities */ +class LIB_GEOMETRY_EXPORT Noise +{ + public: + + /*! Builds a Noise object */ + Noise(); + /*! 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]; + int start; +}; + +#endif // NOISE_H |