mirror of https://github.com/axmolengine/axmol.git
84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
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/****************************************************************************
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Copyright (C) 2013 Henry van Merode. All rights reserved.
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Copyright (c) 2015-2016 Chukong Technologies Inc.
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Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#ifndef __CC_PU_PARTICLE_3D_NOISE_H__
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#define __CC_PU_PARTICLE_3D_NOISE_H__
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#include "base/CCRef.h"
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#include "math/CCMath.h"
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NS_CC_BEGIN
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class PUNoise3D
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{
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public:
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/* Constructor / Destructor */
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PUNoise3D();
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virtual ~PUNoise3D();
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/* Inititialises the noise function */
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void initialise(unsigned short octaves, double frequency = 1.0, double amplitude = 1.0, double persistence = 1.0);
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/* Returns a noise value between [0, 1]
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@remarks
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The noise is calculated in realtime
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*/
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double noise(double x, double y, double z);
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/* Returns a noise value between [0, 1]
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@remarks
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The noise is calculated in realtime
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*/
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double noise(const Vec3& position);
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///* Creates an image file to test the noise */
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//void noise2img(unsigned short dimension = 255);
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protected:
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/* Returns a noise value between [0, 1]
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@remarks
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The noise is calculated in realtime
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*/
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double genNoise(double x, double y, double z);
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double fade(double t);
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double lerp(double t, double a, double b);
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double grad(int hash, double x, double y, double z);
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protected:
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int _p[512];
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unsigned short _octaves;
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double _frequency;
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double _amplitude;
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double _persistence;
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};
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NS_CC_END
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#endif
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