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author | Alexander Harkness <me@bearbin.net> | 2024-11-02 22:27:47 +0100 |
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committer | Alexander Harkness <me@bearbin.net> | 2024-11-02 22:27:47 +0100 |
commit | cb50ec10591c0e0e4b9915e642bc50d3d8d1fd0a (patch) | |
tree | f647b20e1823f1846af88e832cf82a4a02e96e69 /src/Noise/InterpolNoise.h | |
parent | Improve clang-format config file, remove automatically enforced code style from contrib guide. (diff) | |
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Diffstat (limited to 'src/Noise/InterpolNoise.h')
-rw-r--r-- | src/Noise/InterpolNoise.h | 147 |
1 files changed, 74 insertions, 73 deletions
diff --git a/src/Noise/InterpolNoise.h b/src/Noise/InterpolNoise.h index 12b167dbe..241ea72ff 100644 --- a/src/Noise/InterpolNoise.h +++ b/src/Noise/InterpolNoise.h @@ -1,7 +1,8 @@ // InterpolNoise.h -// Implements the cInterpolNoise class template representing a noise that interpolates the values between integer coords from a single set of neighbors +// Implements the cInterpolNoise class template representing a noise that interpolates the values between integer coords +// from a single set of neighbors @@ -20,17 +21,17 @@ //////////////////////////////////////////////////////////////////////////////// // cInterpolCell2D: -template <typename T> -class cInterpolCell2D +template <typename T> class cInterpolCell2D { -public: + public: cInterpolCell2D( - const cNoise & a_Noise, ///< Noise to use for generating the random values + const cNoise & a_Noise, ///< Noise to use for generating the random values NOISE_DATATYPE * a_Array, ///< Array to generate into [x + a_SizeX * y] - int a_SizeX, int a_SizeY, ///< Count of the array, in each direction + int a_SizeX, + int a_SizeY, ///< Count of the array, in each direction const NOISE_DATATYPE * a_FracX, ///< Pointer to the array that stores the X fractional values - const NOISE_DATATYPE * a_FracY ///< Pointer to the attay that stores the Y fractional values - ): + const NOISE_DATATYPE * a_FracY ///< Pointer to the attay that stores the Y fractional values + ) : m_Noise(a_Noise), m_WorkRnds(&m_Workspace1), m_CurFloorX(0), @@ -45,10 +46,7 @@ public: /** Generates part of the output noise array using the current m_WorkRnds[] values */ - void Generate( - int a_FromX, int a_ToX, - int a_FromY, int a_ToY - ) + void Generate(int a_FromX, int a_ToX, int a_FromY, int a_ToY) { for (int y = a_FromY; y < a_ToY; y++) { @@ -70,8 +68,8 @@ public: { m_CurFloorX = a_FloorX; m_CurFloorY = a_FloorY; - (*m_WorkRnds)[0][0] = m_Noise.IntNoise2D(m_CurFloorX, m_CurFloorY); - (*m_WorkRnds)[0][1] = m_Noise.IntNoise2D(m_CurFloorX, m_CurFloorY + 1); + (*m_WorkRnds)[0][0] = m_Noise.IntNoise2D(m_CurFloorX, m_CurFloorY); + (*m_WorkRnds)[0][1] = m_Noise.IntNoise2D(m_CurFloorX, m_CurFloorY + 1); (*m_WorkRnds)[1][0] = m_Noise.IntNoise2D(m_CurFloorX + 1, m_CurFloorY); (*m_WorkRnds)[1][1] = m_Noise.IntNoise2D(m_CurFloorX + 1, m_CurFloorY + 1); } @@ -112,7 +110,7 @@ public: m_CurFloorY = a_NewFloorY; } -protected: + protected: typedef NOISE_DATATYPE Workspace[2][2]; /** The noise used for generating the values at integral coords. */ @@ -139,7 +137,7 @@ protected: /** Arrays holding the fractional values of the coords in each direction. */ const NOISE_DATATYPE * m_FracX; const NOISE_DATATYPE * m_FracY; -} ; +}; @@ -150,20 +148,21 @@ protected: /** Holds a cache of the last calculated integral noise values and interpolates between them en masse. Provides a massive optimization for cInterpolNoise. -Works by calculating multiple noise values (that have the same integral noise coords) at once. The underlying noise values -needn't be recalculated for these values, only the interpolation is done within the unit cube. */ -template <typename T> -class cInterpolCell3D +Works by calculating multiple noise values (that have the same integral noise coords) at once. The underlying noise +values needn't be recalculated for these values, only the interpolation is done within the unit cube. */ +template <typename T> class cInterpolCell3D { -public: + public: cInterpolCell3D( - const cNoise & a_Noise, ///< Noise to use for generating the random values - NOISE_DATATYPE * a_Array, ///< Array to generate into [x + a_SizeX * y] - int a_SizeX, int a_SizeY, int a_SizeZ, ///< Count of the array, in each direction - const NOISE_DATATYPE * a_FracX, ///< Pointer to the array that stores the X fractional values - const NOISE_DATATYPE * a_FracY, ///< Pointer to the attay that stores the Y fractional values - const NOISE_DATATYPE * a_FracZ ///< Pointer to the array that stores the Z fractional values - ): + const cNoise & a_Noise, ///< Noise to use for generating the random values + NOISE_DATATYPE * a_Array, ///< Array to generate into [x + a_SizeX * y] + int a_SizeX, + int a_SizeY, + int a_SizeZ, ///< Count of the array, in each direction + const NOISE_DATATYPE * a_FracX, ///< Pointer to the array that stores the X fractional values + const NOISE_DATATYPE * a_FracY, ///< Pointer to the attay that stores the Y fractional values + const NOISE_DATATYPE * a_FracZ ///< Pointer to the array that stores the Z fractional values + ) : m_Noise(a_Noise), m_WorkRnds(&m_Workspace1), m_CurFloorX(0), @@ -181,11 +180,7 @@ public: /** Generates part of the output array using current m_WorkRnds[]. */ - void Generate( - int a_FromX, int a_ToX, - int a_FromY, int a_ToY, - int a_FromZ, int a_ToZ - ) + void Generate(int a_FromX, int a_ToX, int a_FromY, int a_ToY, int a_FromZ, int a_ToZ) { for (int z = a_FromZ; z < a_ToZ; z++) { @@ -221,14 +216,21 @@ public: m_CurFloorX = a_FloorX; m_CurFloorY = a_FloorY; m_CurFloorZ = a_FloorZ; - (*m_WorkRnds)[0][0][0] = static_cast<NOISE_DATATYPE>(m_Noise.IntNoise3D(m_CurFloorX, m_CurFloorY, m_CurFloorZ)); - (*m_WorkRnds)[0][0][1] = static_cast<NOISE_DATATYPE>(m_Noise.IntNoise3D(m_CurFloorX, m_CurFloorY, m_CurFloorZ + 1)); - (*m_WorkRnds)[0][1][0] = static_cast<NOISE_DATATYPE>(m_Noise.IntNoise3D(m_CurFloorX, m_CurFloorY + 1, m_CurFloorZ)); - (*m_WorkRnds)[0][1][1] = static_cast<NOISE_DATATYPE>(m_Noise.IntNoise3D(m_CurFloorX, m_CurFloorY + 1, m_CurFloorZ + 1)); - (*m_WorkRnds)[1][0][0] = static_cast<NOISE_DATATYPE>(m_Noise.IntNoise3D(m_CurFloorX + 1, m_CurFloorY, m_CurFloorZ)); - (*m_WorkRnds)[1][0][1] = static_cast<NOISE_DATATYPE>(m_Noise.IntNoise3D(m_CurFloorX + 1, m_CurFloorY, m_CurFloorZ + 1)); - (*m_WorkRnds)[1][1][0] = static_cast<NOISE_DATATYPE>(m_Noise.IntNoise3D(m_CurFloorX + 1, m_CurFloorY + 1, m_CurFloorZ)); - (*m_WorkRnds)[1][1][1] = static_cast<NOISE_DATATYPE>(m_Noise.IntNoise3D(m_CurFloorX + 1, m_CurFloorY + 1, m_CurFloorZ + 1)); + (*m_WorkRnds)[0][0][0] = static_cast<NOISE_DATATYPE>(m_Noise.IntNoise3D(m_CurFloorX, m_CurFloorY, m_CurFloorZ)); + (*m_WorkRnds)[0][0][1] = + static_cast<NOISE_DATATYPE>(m_Noise.IntNoise3D(m_CurFloorX, m_CurFloorY, m_CurFloorZ + 1)); + (*m_WorkRnds)[0][1][0] = + static_cast<NOISE_DATATYPE>(m_Noise.IntNoise3D(m_CurFloorX, m_CurFloorY + 1, m_CurFloorZ)); + (*m_WorkRnds)[0][1][1] = + static_cast<NOISE_DATATYPE>(m_Noise.IntNoise3D(m_CurFloorX, m_CurFloorY + 1, m_CurFloorZ + 1)); + (*m_WorkRnds)[1][0][0] = + static_cast<NOISE_DATATYPE>(m_Noise.IntNoise3D(m_CurFloorX + 1, m_CurFloorY, m_CurFloorZ)); + (*m_WorkRnds)[1][0][1] = + static_cast<NOISE_DATATYPE>(m_Noise.IntNoise3D(m_CurFloorX + 1, m_CurFloorY, m_CurFloorZ + 1)); + (*m_WorkRnds)[1][1][0] = + static_cast<NOISE_DATATYPE>(m_Noise.IntNoise3D(m_CurFloorX + 1, m_CurFloorY + 1, m_CurFloorZ)); + (*m_WorkRnds)[1][1][1] = + static_cast<NOISE_DATATYPE>(m_Noise.IntNoise3D(m_CurFloorX + 1, m_CurFloorY + 1, m_CurFloorZ + 1)); } @@ -275,7 +277,7 @@ public: m_CurFloorZ = a_NewFloorZ; } -protected: + protected: typedef NOISE_DATATYPE Workspace[2][2][2]; /** The noise used for generating the values at integral coords. */ @@ -303,7 +305,7 @@ protected: const NOISE_DATATYPE * m_FracX; const NOISE_DATATYPE * m_FracY; const NOISE_DATATYPE * m_FracZ; -} ; +}; @@ -312,32 +314,31 @@ protected: //////////////////////////////////////////////////////////////////////////////// // cInterpolNoise: -template <typename T> -class cInterpolNoise +template <typename T> class cInterpolNoise { /** Maximum size, for each direction, of the generated array. */ static const int MAX_SIZE = 256; -public: - cInterpolNoise(int a_Seed): + public: + cInterpolNoise(int a_Seed) : m_Noise(a_Seed) { } /** Sets a new seed for the generators. Relays the seed to the underlying noise. */ - void SetSeed(int a_Seed) - { - m_Noise.SetSeed(a_Seed); - } + void SetSeed(int a_Seed) { m_Noise.SetSeed(a_Seed); } /** Fills a 2D array with the values of the noise. */ void Generate2D( - NOISE_DATATYPE * a_Array, ///< Array to generate into [x + a_SizeX * y] - int a_SizeX, int a_SizeY, ///< Count of the array, in each direction - NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX, ///< Noise-space coords of the array in the X direction - NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY ///< Noise-space coords of the array in the Y direction + NOISE_DATATYPE * a_Array, ///< Array to generate into [x + a_SizeX * y] + int a_SizeX, + int a_SizeY, ///< Count of the array, in each direction + NOISE_DATATYPE a_StartX, + NOISE_DATATYPE a_EndX, ///< Noise-space coords of the array in the X direction + NOISE_DATATYPE a_StartY, + NOISE_DATATYPE a_EndY ///< Noise-space coords of the array in the Y direction ) const { ASSERT(a_SizeX > 0); @@ -384,11 +385,16 @@ public: /** Fills a 3D array with the values of the noise. */ void Generate3D( - NOISE_DATATYPE * a_Array, ///< Array to generate into [x + a_SizeX * y + a_SizeX * a_SizeY * z] - int a_SizeX, int a_SizeY, int a_SizeZ, ///< Count of the array, in each direction - NOISE_DATATYPE a_StartX, NOISE_DATATYPE a_EndX, ///< Noise-space coords of the array in the X direction - NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY, ///< Noise-space coords of the array in the Y direction - NOISE_DATATYPE a_StartZ, NOISE_DATATYPE a_EndZ ///< Noise-space coords of the array in the Z direction + NOISE_DATATYPE * a_Array, ///< Array to generate into [x + a_SizeX * y + a_SizeX * a_SizeY * z] + int a_SizeX, + int a_SizeY, + int a_SizeZ, ///< Count of the array, in each direction + NOISE_DATATYPE a_StartX, + NOISE_DATATYPE a_EndX, ///< Noise-space coords of the array in the X direction + NOISE_DATATYPE a_StartY, + NOISE_DATATYPE a_EndY, ///< Noise-space coords of the array in the Y direction + NOISE_DATATYPE a_StartZ, + NOISE_DATATYPE a_EndZ ///< Noise-space coords of the array in the Z direction ) const { // Check params: @@ -417,11 +423,7 @@ public: CalcFloorFrac(a_SizeY, a_StartY, a_EndY, FloorY, FracY, SameY, NumSameY); CalcFloorFrac(a_SizeZ, a_StartZ, a_EndZ, FloorZ, FracZ, SameZ, NumSameZ); - cInterpolCell3D<T> Cell( - m_Noise, a_Array, - a_SizeX, a_SizeY, a_SizeZ, - FracX, FracY, FracZ - ); + cInterpolCell3D<T> Cell(m_Noise, a_Array, a_SizeX, a_SizeY, a_SizeZ, FracX, FracY, FracZ); Cell.InitWorkRnds(FloorX[0], FloorY[0], FloorZ[0]); @@ -461,8 +463,7 @@ public: } // for z } -protected: - + protected: /** The noise used for the underlying value generation. */ cNoise m_Noise; @@ -474,9 +475,12 @@ protected: a_NumSame will receive the count of a_Same elements (total count of different integral parts). */ void CalcFloorFrac( int a_Size, - NOISE_DATATYPE a_Start, NOISE_DATATYPE a_End, - int * a_Floor, NOISE_DATATYPE * a_Frac, - int * a_Same, int & a_NumSame + NOISE_DATATYPE a_Start, + NOISE_DATATYPE a_End, + int * a_Floor, + NOISE_DATATYPE * a_Frac, + int * a_Same, + int & a_NumSame ) const { ASSERT(a_Size > 0); @@ -528,6 +532,3 @@ struct Interp5Deg }; typedef cInterpolNoise<Interp5Deg> cInterp5DegNoise; - - - |