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Noise: Refresh module using ZNoise

Browse Source 
https://github.com/Overdrivr/ZNoise

Former-commit-id: ea7bbeb58a7147934523e2f600b1bd02f1cae5ed [formerly 581ab53941abbda68e00417592240f52ebd482e6]
Former-commit-id: e948aca78eb101292f0458365cfa39e6564d0462
This commit is contained in:
Jérôme Leclercq
2016-06-18 07:52:33 +02:00
parent a66db53057
commit 33f2241d95
56 changed files with 1408 additions and 2017 deletions
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28
src/Nazara/Noise/NoiseTools.cpp Normal file
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// Copyright (C) 2016 Rémi Bèges
// This file is part of the "Nazara Engine - Noise module"
// For conditions of distribution and use, see copyright notice in Config.hpp
#include <Nazara/Noise/NoiseTools.hpp>
#include <Nazara/Noise/Debug.hpp>
namespace Nz
{
int fastfloor(float n)
{
return (n >= 0) ? static_cast<int>(n) : static_cast<int>(n-1);
}
int JenkinsHash(int a, int b, int c)
{
a = a-b; a = a - c; a = a^(static_cast<unsigned int>(c) >> 13);
b = b-c; b = b - a; b = b^(a << 8);
c = c-a; c = c - b; c = c^(static_cast<unsigned int>(b) >> 13);
a = a-b; a = a - c; a = a^(static_cast<unsigned int>(c) >> 12);
b = b-c; b = b - a; b = b^(a << 16);
c = c-a; c = c - b; c = c^(static_cast<unsigned int>(b) >> 5);
a = a-b; a = a - c; a = a^(static_cast<unsigned int>(c) >> 3);
b = b-c; b = b - a; b = b^(a << 10);
c = c-a; c = c - b; c = c^(static_cast<unsigned int>(b) >> 15);
return c;
}
}