1 files changed, 94 insertions, 0 deletions

diff --git a/source/Noise.h b/source/Noise.h
new file mode 100644
index 000000000..68428d33e
--- /dev/null
+++ b/source/Noise.h
@@ -0,0 +1,94 @@
+#pragma once
+
+// Some settings
+#define NOISE_USE_INLINE 1
+#define NOISE_USE_SSE 0
+
+// Do not touch
+#if NOISE_USE_INLINE
+	#ifdef _MSC_VER
+		#define __NOISE_INLINE__ __forceinline
+	#else
+		#define __NOISE_INLINE__ inline
+	#endif  // _MSC_VER
+#else
+	#define __NOISE_INLINE__
+#endif
+
+#if NOISE_USE_SSE
+# include <emmintrin.h>
+#endif
+
+
+
+
+
+class cNoise
+{
+public:
+	cNoise( unsigned int a_Seed );
+	~cNoise();
+
+#if NOISE_USE_SSE
+	__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;
+#endif
+
+	__NOISE_INLINE__ float IntNoise( int a_X ) const;
+	__NOISE_INLINE__ float IntNoise2D( int a_X, int a_Y ) const;
+	__NOISE_INLINE__ float IntNoise3D( int a_X, int a_Y, int a_Z ) const;
+
+	// Note: These functions have a mod8-irregular chance - each of the mod8 remainders has different chance of occurrence. Divide by 8 to rectify.
+	__NOISE_INLINE__ int IntNoise1DInt( int a_X ) const;
+	__NOISE_INLINE__ int IntNoise2DInt( int a_X, int a_Y ) const;
+	__NOISE_INLINE__ int IntNoise3DInt( int a_X, int a_Y, int a_Z ) const;
+
+	float LinearNoise1D( float a_X ) const;
+	float CosineNoise1D( float a_X ) const;
+	float CubicNoise1D( float a_X ) const;
+	float SmoothNoise1D( int a_X ) const;
+
+	float LinearNoise2D( float a_X, float a_Y ) const;
+	float CosineNoise2D( float a_X, float a_Y ) const;
+	float CubicNoise2D( float a_X, float a_Y ) const;
+	float SSE_CubicNoise2D( float a_X, float a_Y ) const;
+
+	float CosineNoise3D( float a_X, float a_Y, float a_Z ) const;
+	float CubicNoise3D( float a_X, float a_Y, float a_Z ) const;
+
+	void SetSeed( unsigned int a_Seed ) { m_Seed = a_Seed; }
+
+	__NOISE_INLINE__ static float CubicInterpolate( float a_A, float a_B, float a_C, float a_D, float a_Pct );
+	__NOISE_INLINE__ static float CosineInterpolate( float a_A, float a_B, float a_Pct );
+	__NOISE_INLINE__ static float LinearInterpolate( float a_A, float a_B, float a_Pct );
+
+private:
+
+#if NOISE_USE_SSE
+	__m128 CubicInterpolate4( const __m128 & a_A, const __m128 & a_B, const __m128 & a_C, const __m128 & a_D, float a_Pct ) const;
+#endif
+
+	unsigned int m_Seed;
+};
+
+
+
+
+
+/// Linearly interpolates values in the array between the anchor points
+extern void IntArrayLinearInterpolate2D(
+	int * a_Array, 
+	int a_SizeX, int a_SizeY,  // Dimensions of the array
+	int a_AnchorStepX, int a_AnchorStepY  // Distances between the anchor points in each direction
+);
+
+
+
+
+
+#if NOISE_USE_INLINE
+	#include "Noise.inc"
+#endif
+
+
+
+