e49313202c
git-svn-id: http://mc-server.googlecode.com/svn/trunk@708 0a769ca7-a7f5-676a-18bf-c427514a06d6
95 lines
2.4 KiB
C++
95 lines
2.4 KiB
C++
#pragma once
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// Some settings
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#define NOISE_USE_INLINE 1
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#define NOISE_USE_SSE 0
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// Do not touch
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#if NOISE_USE_INLINE
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#ifdef _MSC_VER
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#define __NOISE_INLINE__ __forceinline
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#else
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#define __NOISE_INLINE__ inline
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#endif // _MSC_VER
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#else
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#define __NOISE_INLINE__
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#endif
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#if NOISE_USE_SSE
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# include <emmintrin.h>
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#endif
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class cNoise
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{
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public:
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cNoise( unsigned int a_Seed );
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~cNoise();
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#if NOISE_USE_SSE
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__m128 SSE_IntNoise2D( int a_X1, int a_Y1, int a_X2, int a_Y2, int a_X3, int a_Y3, int a_X4, int a_Y4 ) const;
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#endif
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__NOISE_INLINE__ float IntNoise( int a_X ) const;
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__NOISE_INLINE__ float IntNoise2D( int a_X, int a_Y ) const;
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__NOISE_INLINE__ float IntNoise3D( int a_X, int a_Y, int a_Z ) const;
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// Note: These functions have a mod8-irregular chance - each of the mod8 remainders has different chance of occurrence. Divide by 8 to rectify.
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__NOISE_INLINE__ int IntNoise1DInt( int a_X ) const;
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__NOISE_INLINE__ int IntNoise2DInt( int a_X, int a_Y ) const;
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__NOISE_INLINE__ int IntNoise3DInt( int a_X, int a_Y, int a_Z ) const;
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float LinearNoise1D( float a_X ) const;
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float CosineNoise1D( float a_X ) const;
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float CubicNoise1D( float a_X ) const;
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float SmoothNoise1D( int a_X ) const;
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float LinearNoise2D( float a_X, float a_Y ) const;
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float CosineNoise2D( float a_X, float a_Y ) const;
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float CubicNoise2D( float a_X, float a_Y ) const;
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float SSE_CubicNoise2D( float a_X, float a_Y ) const;
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float CosineNoise3D( float a_X, float a_Y, float a_Z ) const;
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float CubicNoise3D( float a_X, float a_Y, float a_Z ) const;
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void SetSeed( unsigned int a_Seed ) { m_Seed = a_Seed; }
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__NOISE_INLINE__ static float CubicInterpolate( float a_A, float a_B, float a_C, float a_D, float a_Pct );
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__NOISE_INLINE__ static float CosineInterpolate( float a_A, float a_B, float a_Pct );
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__NOISE_INLINE__ static float LinearInterpolate( float a_A, float a_B, float a_Pct );
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private:
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#if NOISE_USE_SSE
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__m128 CubicInterpolate4( const __m128 & a_A, const __m128 & a_B, const __m128 & a_C, const __m128 & a_D, float a_Pct ) const;
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#endif
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unsigned int m_Seed;
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};
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/// Linearly interpolates values in the array between the anchor points
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extern void IntArrayLinearInterpolate2D(
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int * a_Array,
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int a_SizeX, int a_SizeY, // Dimensions of the array
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int a_AnchorStepX, int a_AnchorStepY // Distances between the anchor points in each direction
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);
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#if NOISE_USE_INLINE
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# include "cNoise.inc"
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#endif
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