Steve Pham
38261d0800
* Updated all copyright headers to split the longer original copyright line into 2 shorter lines Signed-off-by: Steve Pham <spham@amazon.com>
48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
/*
|
|
* Copyright (c) Contributors to the Open 3D Engine Project.
|
|
* For complete copyright and license terms please see the LICENSE at the root of this distribution.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0 OR MIT
|
|
*
|
|
*/
|
|
#pragma once
|
|
|
|
#include <AzCore/std/containers/array.h>
|
|
#include <AzCore/Memory/Memory.h>
|
|
#include <AzCore/Memory/SystemAllocator.h>
|
|
|
|
namespace GradientSignal
|
|
{
|
|
/**
|
|
* Implementation of the Perlin improved noise algorithm
|
|
* Perlin noise can be used for any sort of wave-like deterministic patterns
|
|
*/
|
|
class PerlinImprovedNoise final
|
|
{
|
|
public:
|
|
AZ_CLASS_ALLOCATOR(PerlinImprovedNoise, AZ::SystemAllocator, 0);
|
|
|
|
/**
|
|
* Prepares the permutation table with a given random seed
|
|
*/
|
|
PerlinImprovedNoise(int seed);
|
|
|
|
/**
|
|
* Creates a Perlin 'natural' noise factor values based on a position with smoothing parameters
|
|
*/
|
|
float GenerateOctaveNoise(float x, float y, float z, int octaves, float persistence, float initialFrequency = 1.0f);
|
|
|
|
/**
|
|
* Creates a Perlin noise factor value based on a position
|
|
*/
|
|
float GenerateNoise(float x, float y, float z);
|
|
|
|
protected:
|
|
void PrepareTable(int seed);
|
|
|
|
private:
|
|
AZStd::array<int, 512> m_permutationTable;
|
|
};
|
|
|
|
} // namespace GradientSignal
|