1426cd3b3a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see". Backported from #70885.
100 lines
4.7 KiB
C++
100 lines
4.7 KiB
C++
/**************************************************************************/
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/* open_simplex_noise.h */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#ifndef OPEN_SIMPLEX_NOISE_H
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#define OPEN_SIMPLEX_NOISE_H
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#include "core/image.h"
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#include "core/reference.h"
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#include "scene/resources/texture.h"
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#include "thirdparty/misc/open-simplex-noise.h"
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class OpenSimplexNoise : public Resource {
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GDCLASS(OpenSimplexNoise, Resource);
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OBJ_SAVE_TYPE(OpenSimplexNoise);
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// The maximum number of octaves allowed. Note that these are statically allocated.
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// Higher values become exponentially slower, so this shouldn't be set too high
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// to avoid freezing the editor for long periods of time.
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static const int MAX_OCTAVES = 9;
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osn_context contexts[MAX_OCTAVES];
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int seed;
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float persistence; // Controls details, value in [0,1]. Higher increases grain, lower increases smoothness.
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int octaves; // Number of noise layers
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float period; // Distance above which we start to see similarities. The higher, the longer "hills" will be on a terrain.
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float lacunarity; // Controls period change across octaves. 2 is usually a good value to address all detail levels.
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public:
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OpenSimplexNoise();
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~OpenSimplexNoise();
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void _init_seeds();
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void set_seed(int seed);
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int get_seed() const;
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void set_octaves(int p_octaves);
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int get_octaves() const { return octaves; }
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void set_period(float p_period);
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float get_period() const { return period; }
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void set_persistence(float p_persistence);
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float get_persistence() const { return persistence; }
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void set_lacunarity(float p_lacunarity);
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float get_lacunarity() const { return lacunarity; }
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Ref<Image> get_image(int p_width, int p_height, const Vector2 &p_noise_offset = Vector2()) const;
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Ref<Image> get_seamless_image(int p_size) const;
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float get_noise_1d(float x) const;
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float get_noise_2d(float x, float y) const;
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float get_noise_3d(float x, float y, float z) const;
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float get_noise_4d(float x, float y, float z, float w) const;
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_FORCE_INLINE_ float _get_octave_noise_2d(int octave, float x, float y) const { return open_simplex_noise2(&(contexts[octave]), x, y); }
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_FORCE_INLINE_ float _get_octave_noise_3d(int octave, float x, float y, float z) const { return open_simplex_noise3(&(contexts[octave]), x, y, z); }
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_FORCE_INLINE_ float _get_octave_noise_4d(int octave, float x, float y, float z, float w) const { return open_simplex_noise4(&(contexts[octave]), x, y, z, w); }
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// Convenience
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_FORCE_INLINE_ float get_noise_2dv(const Vector2 &v) const { return get_noise_2d(v.x, v.y); }
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_FORCE_INLINE_ float get_noise_3dv(const Vector3 &v) const { return get_noise_3d(v.x, v.y, v.z); }
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protected:
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static void _bind_methods();
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};
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#endif // OPEN_SIMPLEX_NOISE_H
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