diff options
Diffstat (limited to 'modules/opensimplex/simplex_noise.h')
| -rw-r--r-- | modules/opensimplex/simplex_noise.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/modules/opensimplex/simplex_noise.h b/modules/opensimplex/simplex_noise.h new file mode 100644 index 0000000000..9a48dbf809 --- /dev/null +++ b/modules/opensimplex/simplex_noise.h @@ -0,0 +1,93 @@ +/*************************************************************************/ +/* simplex_noise.h */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ + +#ifndef SIMPLEX_NOISE_H +#define SIMPLEX_NOISE_H + +#include "core/image.h" +#include "core/reference.h" +#include "scene/resources/texture.h" + +#include "thirdparty/misc/open-simplex-noise.h" + +class SimplexNoise : public Resource { + GDCLASS(SimplexNoise, Resource) + OBJ_SAVE_TYPE(SimplexNoise); + + osn_context contexts[6]; + + int seed; + float persistence; // Controls details, value in [0,1]. Higher increases grain, lower increases smoothness. + int octaves; // Number of noise layers + float period; // Distance above which we start to see similarities. The higher, the longer "hills" will be on a terrain. + float lacunarity; // Controls period change across octaves. 2 is usually a good value to address all detail levels. + +public: + SimplexNoise(); + ~SimplexNoise(); + + void _init_seeds(); + + void set_seed(int seed); + int get_seed(); + + void set_octaves(int p_octaves); + int get_octaves() const { return octaves; } + + void set_period(float p_period); + float get_period() const { return period; } + + void set_persistence(float p_persistence); + float get_persistence() const { return persistence; } + + void set_lacunarity(float p_lacunarity); + float get_lacunarity() const { return lacunarity; } + + Ref<Image> get_image(int p_width, int p_height); + Ref<Image> get_seamless_image(int p_size); + + float get_noise_2d(float x, float y); + float get_noise_3d(float x, float y, float z); + float get_noise_4d(float x, float y, float z, float w); + + _FORCE_INLINE_ float _get_octave_noise_2d(int octave, float x, float y) { return open_simplex_noise2(&(contexts[octave]), x, y); } + _FORCE_INLINE_ float _get_octave_noise_3d(int octave, float x, float y, float z) { return open_simplex_noise3(&(contexts[octave]), x, y, z); } + _FORCE_INLINE_ float _get_octave_noise_4d(int octave, float x, float y, float z, float w) { return open_simplex_noise4(&(contexts[octave]), x, y, z, w); } + + // Convenience + + _FORCE_INLINE_ float get_noise_2dv(Vector2 v) { return get_noise_2d(v.x, v.y); } + _FORCE_INLINE_ float get_noise_3dv(Vector3 v) { return get_noise_3d(v.x, v.y, v.z); } + +protected: + static void _bind_methods(); +}; + +#endif // OPENSIMPLEX_NOISE_H |