diff options
Diffstat (limited to '')
| -rw-r--r-- | src/Noise.cpp | 288 |
1 files changed, 233 insertions, 55 deletions
diff --git a/src/Noise.cpp b/src/Noise.cpp index 95a022ea3..507d05ea5 100644 --- a/src/Noise.cpp +++ b/src/Noise.cpp @@ -9,7 +9,7 @@ -/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////////////// // Globals: void Debug3DNoise(const NOISE_DATATYPE * a_Noise, int a_SizeX, int a_SizeY, int a_SizeZ, const AString & a_FileNameBase) @@ -90,7 +90,7 @@ void Debug2DNoise(const NOISE_DATATYPE * a_Noise, int a_SizeX, int a_SizeY, cons -/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////////////// // cCubicCell2D: class cCubicCell2D @@ -239,7 +239,7 @@ void cCubicCell2D::Move(int a_NewFloorX, int a_NewFloorY) -/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////////////// // cCubicCell3D: class cCubicCell3D @@ -422,7 +422,7 @@ void cCubicCell3D::Move(int a_NewFloorX, int a_NewFloorY, int a_NewFloorZ) -/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////////////// // cNoise: cNoise::cNoise(int a_Seed) : @@ -487,8 +487,8 @@ NOISE_DATATYPE cNoise::SmoothNoise1D(int a_X) const NOISE_DATATYPE cNoise::CubicNoise2D(NOISE_DATATYPE a_X, NOISE_DATATYPE a_Y) const { - const int BaseX = FAST_FLOOR(a_X); - const int BaseY = FAST_FLOOR(a_Y); + const int BaseX = FAST_FLOOR(a_X); + const int BaseY = FAST_FLOOR(a_Y); const NOISE_DATATYPE points[4][4] = { @@ -515,74 +515,78 @@ NOISE_DATATYPE cNoise::CubicNoise2D(NOISE_DATATYPE a_X, NOISE_DATATYPE a_Y) cons NOISE_DATATYPE cNoise::CubicNoise3D(NOISE_DATATYPE a_X, NOISE_DATATYPE a_Y, NOISE_DATATYPE a_Z) const { - const int BaseX = FAST_FLOOR(a_X); - const int BaseY = FAST_FLOOR(a_Y); - const int BaseZ = FAST_FLOOR(a_Z); + const int BaseX = FAST_FLOOR(a_X); + const int BaseY = FAST_FLOOR(a_Y); + const int BaseZ = FAST_FLOOR(a_Z); - const NOISE_DATATYPE points1[4][4] = { + const NOISE_DATATYPE points1[4][4] = + { { IntNoise3D(BaseX - 1, BaseY - 1, BaseZ - 1), IntNoise3D(BaseX, BaseY - 1, BaseZ - 1), IntNoise3D(BaseX + 1, BaseY - 1, BaseZ - 1), IntNoise3D(BaseX + 2, BaseY - 1, BaseZ - 1), }, { IntNoise3D(BaseX - 1, BaseY, BaseZ - 1), IntNoise3D(BaseX, BaseY, BaseZ - 1), IntNoise3D(BaseX + 1, BaseY, BaseZ - 1), IntNoise3D(BaseX + 2, BaseY, BaseZ - 1), }, { IntNoise3D(BaseX - 1, BaseY + 1, BaseZ - 1), IntNoise3D(BaseX, BaseY + 1, BaseZ - 1), IntNoise3D(BaseX + 1, BaseY + 1, BaseZ - 1), IntNoise3D(BaseX + 2, BaseY + 1, BaseZ - 1), }, { IntNoise3D(BaseX - 1, BaseY + 2, BaseZ - 1), IntNoise3D(BaseX, BaseY + 2, BaseZ - 1), IntNoise3D(BaseX + 1, BaseY + 2, BaseZ - 1), IntNoise3D(BaseX + 2, BaseY + 2, BaseZ - 1), }, }; - const NOISE_DATATYPE FracX = (a_X) - BaseX; - const NOISE_DATATYPE x1interp1 = CubicInterpolate( points1[0][0], points1[0][1], points1[0][2], points1[0][3], FracX ); - const NOISE_DATATYPE x1interp2 = CubicInterpolate( points1[1][0], points1[1][1], points1[1][2], points1[1][3], FracX ); - const NOISE_DATATYPE x1interp3 = CubicInterpolate( points1[2][0], points1[2][1], points1[2][2], points1[2][3], FracX ); - const NOISE_DATATYPE x1interp4 = CubicInterpolate( points1[3][0], points1[3][1], points1[3][2], points1[3][3], FracX ); - - const NOISE_DATATYPE points2[4][4] = { - { IntNoise3D( BaseX-1, BaseY-1, BaseZ ), IntNoise3D( BaseX, BaseY-1, BaseZ ), IntNoise3D( BaseX+1, BaseY-1, BaseZ ), IntNoise3D( BaseX+2, BaseY-1, BaseZ ), }, - { IntNoise3D( BaseX-1, BaseY, BaseZ ), IntNoise3D( BaseX, BaseY, BaseZ ), IntNoise3D( BaseX+1, BaseY, BaseZ ), IntNoise3D( BaseX+2, BaseY, BaseZ ), }, - { IntNoise3D( BaseX-1, BaseY+1, BaseZ ), IntNoise3D( BaseX, BaseY+1, BaseZ ), IntNoise3D( BaseX+1, BaseY+1, BaseZ ), IntNoise3D( BaseX+2, BaseY+1, BaseZ ), }, - { IntNoise3D( BaseX-1, BaseY+2, BaseZ ), IntNoise3D( BaseX, BaseY+2, BaseZ ), IntNoise3D( BaseX+1, BaseY+2, BaseZ ), IntNoise3D( BaseX+2, BaseY+2, BaseZ ), }, + const NOISE_DATATYPE FracX = (a_X) - BaseX; + const NOISE_DATATYPE x1interp1 = CubicInterpolate( points1[0][0], points1[0][1], points1[0][2], points1[0][3], FracX); + const NOISE_DATATYPE x1interp2 = CubicInterpolate( points1[1][0], points1[1][1], points1[1][2], points1[1][3], FracX); + const NOISE_DATATYPE x1interp3 = CubicInterpolate( points1[2][0], points1[2][1], points1[2][2], points1[2][3], FracX); + const NOISE_DATATYPE x1interp4 = CubicInterpolate( points1[3][0], points1[3][1], points1[3][2], points1[3][3], FracX); + + const NOISE_DATATYPE points2[4][4] = + { + { IntNoise3D(BaseX - 1, BaseY - 1, BaseZ), IntNoise3D(BaseX, BaseY - 1, BaseZ), IntNoise3D(BaseX + 1, BaseY - 1, BaseZ), IntNoise3D(BaseX + 2, BaseY - 1, BaseZ), }, + { IntNoise3D(BaseX - 1, BaseY, BaseZ), IntNoise3D(BaseX, BaseY, BaseZ), IntNoise3D(BaseX + 1, BaseY, BaseZ), IntNoise3D(BaseX + 2, BaseY, BaseZ), }, + { IntNoise3D(BaseX - 1, BaseY + 1, BaseZ), IntNoise3D(BaseX, BaseY + 1, BaseZ), IntNoise3D(BaseX + 1, BaseY + 1, BaseZ), IntNoise3D(BaseX + 2, BaseY + 1, BaseZ), }, + { IntNoise3D(BaseX - 1, BaseY + 2, BaseZ), IntNoise3D(BaseX, BaseY + 2, BaseZ), IntNoise3D(BaseX + 1, BaseY + 2, BaseZ), IntNoise3D(BaseX + 2, BaseY + 2, BaseZ), }, }; - const NOISE_DATATYPE x2interp1 = CubicInterpolate( points2[0][0], points2[0][1], points2[0][2], points2[0][3], FracX ); - const NOISE_DATATYPE x2interp2 = CubicInterpolate( points2[1][0], points2[1][1], points2[1][2], points2[1][3], FracX ); - const NOISE_DATATYPE x2interp3 = CubicInterpolate( points2[2][0], points2[2][1], points2[2][2], points2[2][3], FracX ); - const NOISE_DATATYPE x2interp4 = CubicInterpolate( points2[3][0], points2[3][1], points2[3][2], points2[3][3], FracX ); + const NOISE_DATATYPE x2interp1 = CubicInterpolate( points2[0][0], points2[0][1], points2[0][2], points2[0][3], FracX); + const NOISE_DATATYPE x2interp2 = CubicInterpolate( points2[1][0], points2[1][1], points2[1][2], points2[1][3], FracX); + const NOISE_DATATYPE x2interp3 = CubicInterpolate( points2[2][0], points2[2][1], points2[2][2], points2[2][3], FracX); + const NOISE_DATATYPE x2interp4 = CubicInterpolate( points2[3][0], points2[3][1], points2[3][2], points2[3][3], FracX); - const NOISE_DATATYPE points3[4][4] = { - { IntNoise3D( BaseX-1, BaseY-1, BaseZ+1 ), IntNoise3D( BaseX, BaseY-1, BaseZ+1 ), IntNoise3D( BaseX+1, BaseY-1, BaseZ+1 ), IntNoise3D( BaseX+2, BaseY-1, BaseZ + 1), }, - { IntNoise3D( BaseX-1, BaseY, BaseZ+1 ), IntNoise3D( BaseX, BaseY, BaseZ+1 ), IntNoise3D( BaseX+1, BaseY, BaseZ+1 ), IntNoise3D( BaseX+2, BaseY, BaseZ + 1), }, - { IntNoise3D( BaseX-1, BaseY+1, BaseZ+1 ), IntNoise3D( BaseX, BaseY+1, BaseZ+1 ), IntNoise3D( BaseX+1, BaseY+1, BaseZ+1 ), IntNoise3D( BaseX+2, BaseY+1, BaseZ + 1), }, - { IntNoise3D( BaseX-1, BaseY+2, BaseZ+1 ), IntNoise3D( BaseX, BaseY+2, BaseZ+1 ), IntNoise3D( BaseX+1, BaseY+2, BaseZ+1 ), IntNoise3D( BaseX+2, BaseY+2, BaseZ + 1), }, + const NOISE_DATATYPE points3[4][4] = + { + { IntNoise3D( BaseX-1, BaseY-1, BaseZ+1), IntNoise3D( BaseX, BaseY-1, BaseZ+1), IntNoise3D( BaseX+1, BaseY-1, BaseZ+1), IntNoise3D( BaseX+2, BaseY-1, BaseZ + 1), }, + { IntNoise3D( BaseX-1, BaseY, BaseZ+1), IntNoise3D( BaseX, BaseY, BaseZ+1), IntNoise3D( BaseX+1, BaseY, BaseZ+1), IntNoise3D( BaseX+2, BaseY, BaseZ + 1), }, + { IntNoise3D( BaseX-1, BaseY+1, BaseZ+1), IntNoise3D( BaseX, BaseY+1, BaseZ+1), IntNoise3D( BaseX+1, BaseY+1, BaseZ+1), IntNoise3D( BaseX+2, BaseY+1, BaseZ + 1), }, + { IntNoise3D( BaseX-1, BaseY+2, BaseZ+1), IntNoise3D( BaseX, BaseY+2, BaseZ+1), IntNoise3D( BaseX+1, BaseY+2, BaseZ+1), IntNoise3D( BaseX+2, BaseY+2, BaseZ + 1), }, }; - const NOISE_DATATYPE x3interp1 = CubicInterpolate( points3[0][0], points3[0][1], points3[0][2], points3[0][3], FracX ); - const NOISE_DATATYPE x3interp2 = CubicInterpolate( points3[1][0], points3[1][1], points3[1][2], points3[1][3], FracX ); - const NOISE_DATATYPE x3interp3 = CubicInterpolate( points3[2][0], points3[2][1], points3[2][2], points3[2][3], FracX ); - const NOISE_DATATYPE x3interp4 = CubicInterpolate( points3[3][0], points3[3][1], points3[3][2], points3[3][3], FracX ); + const NOISE_DATATYPE x3interp1 = CubicInterpolate( points3[0][0], points3[0][1], points3[0][2], points3[0][3], FracX); + const NOISE_DATATYPE x3interp2 = CubicInterpolate( points3[1][0], points3[1][1], points3[1][2], points3[1][3], FracX); + const NOISE_DATATYPE x3interp3 = CubicInterpolate( points3[2][0], points3[2][1], points3[2][2], points3[2][3], FracX); + const NOISE_DATATYPE x3interp4 = CubicInterpolate( points3[3][0], points3[3][1], points3[3][2], points3[3][3], FracX); - const NOISE_DATATYPE points4[4][4] = { - { IntNoise3D( BaseX-1, BaseY-1, BaseZ+2 ), IntNoise3D( BaseX, BaseY-1, BaseZ+2 ), IntNoise3D( BaseX+1, BaseY-1, BaseZ+2 ), IntNoise3D( BaseX+2, BaseY-1, BaseZ+2 ), }, - { IntNoise3D( BaseX-1, BaseY, BaseZ+2 ), IntNoise3D( BaseX, BaseY, BaseZ+2 ), IntNoise3D( BaseX+1, BaseY, BaseZ+2 ), IntNoise3D( BaseX+2, BaseY, BaseZ+2 ), }, - { IntNoise3D( BaseX-1, BaseY+1, BaseZ+2 ), IntNoise3D( BaseX, BaseY+1, BaseZ+2 ), IntNoise3D( BaseX+1, BaseY+1, BaseZ+2 ), IntNoise3D( BaseX+2, BaseY+1, BaseZ+2 ), }, - { IntNoise3D( BaseX-1, BaseY+2, BaseZ+2 ), IntNoise3D( BaseX, BaseY+2, BaseZ+2 ), IntNoise3D( BaseX+1, BaseY+2, BaseZ+2 ), IntNoise3D( BaseX+2, BaseY+2, BaseZ+2 ), }, + const NOISE_DATATYPE points4[4][4] = + { + { IntNoise3D( BaseX-1, BaseY-1, BaseZ+2), IntNoise3D( BaseX, BaseY-1, BaseZ+2), IntNoise3D( BaseX+1, BaseY-1, BaseZ+2), IntNoise3D( BaseX+2, BaseY-1, BaseZ+2), }, + { IntNoise3D( BaseX-1, BaseY, BaseZ+2), IntNoise3D( BaseX, BaseY, BaseZ+2), IntNoise3D( BaseX+1, BaseY, BaseZ+2), IntNoise3D( BaseX+2, BaseY, BaseZ+2), }, + { IntNoise3D( BaseX-1, BaseY+1, BaseZ+2), IntNoise3D( BaseX, BaseY+1, BaseZ+2), IntNoise3D( BaseX+1, BaseY+1, BaseZ+2), IntNoise3D( BaseX+2, BaseY+1, BaseZ+2), }, + { IntNoise3D( BaseX-1, BaseY+2, BaseZ+2), IntNoise3D( BaseX, BaseY+2, BaseZ+2), IntNoise3D( BaseX+1, BaseY+2, BaseZ+2), IntNoise3D( BaseX+2, BaseY+2, BaseZ+2), }, }; - const NOISE_DATATYPE x4interp1 = CubicInterpolate( points4[0][0], points4[0][1], points4[0][2], points4[0][3], FracX ); - const NOISE_DATATYPE x4interp2 = CubicInterpolate( points4[1][0], points4[1][1], points4[1][2], points4[1][3], FracX ); - const NOISE_DATATYPE x4interp3 = CubicInterpolate( points4[2][0], points4[2][1], points4[2][2], points4[2][3], FracX ); - const NOISE_DATATYPE x4interp4 = CubicInterpolate( points4[3][0], points4[3][1], points4[3][2], points4[3][3], FracX ); + const NOISE_DATATYPE x4interp1 = CubicInterpolate( points4[0][0], points4[0][1], points4[0][2], points4[0][3], FracX); + const NOISE_DATATYPE x4interp2 = CubicInterpolate( points4[1][0], points4[1][1], points4[1][2], points4[1][3], FracX); + const NOISE_DATATYPE x4interp3 = CubicInterpolate( points4[2][0], points4[2][1], points4[2][2], points4[2][3], FracX); + const NOISE_DATATYPE x4interp4 = CubicInterpolate( points4[3][0], points4[3][1], points4[3][2], points4[3][3], FracX); - const NOISE_DATATYPE FracY = (a_Y) - BaseY; - const NOISE_DATATYPE yinterp1 = CubicInterpolate( x1interp1, x1interp2, x1interp3, x1interp4, FracY ); - const NOISE_DATATYPE yinterp2 = CubicInterpolate( x2interp1, x2interp2, x2interp3, x2interp4, FracY ); - const NOISE_DATATYPE yinterp3 = CubicInterpolate( x3interp1, x3interp2, x3interp3, x3interp4, FracY ); - const NOISE_DATATYPE yinterp4 = CubicInterpolate( x4interp1, x4interp2, x4interp3, x4interp4, FracY ); + const NOISE_DATATYPE FracY = (a_Y) - BaseY; + const NOISE_DATATYPE yinterp1 = CubicInterpolate( x1interp1, x1interp2, x1interp3, x1interp4, FracY); + const NOISE_DATATYPE yinterp2 = CubicInterpolate( x2interp1, x2interp2, x2interp3, x2interp4, FracY); + const NOISE_DATATYPE yinterp3 = CubicInterpolate( x3interp1, x3interp2, x3interp3, x3interp4, FracY); + const NOISE_DATATYPE yinterp4 = CubicInterpolate( x4interp1, x4interp2, x4interp3, x4interp4, FracY); - const NOISE_DATATYPE FracZ = (a_Z) - BaseZ; - return CubicInterpolate( yinterp1, yinterp2, yinterp3, yinterp4, FracZ ); + const NOISE_DATATYPE FracZ = (a_Z) - BaseZ; + return CubicInterpolate( yinterp1, yinterp2, yinterp3, yinterp4, FracZ); } -/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////////////// // cCubicNoise: #ifdef _DEBUG @@ -608,6 +612,8 @@ void cCubicNoise::Generate2D( NOISE_DATATYPE a_StartY, NOISE_DATATYPE a_EndY ///< Noise-space coords of the array in the Y direction ) const { + ASSERT(a_SizeX > 0); + ASSERT(a_SizeY > 0); ASSERT(a_SizeX < MAX_SIZE); ASSERT(a_SizeY < MAX_SIZE); ASSERT(a_StartX < a_EndX); @@ -629,7 +635,7 @@ void cCubicNoise::Generate2D( Cell.InitWorkRnds(FloorX[0], FloorY[0]); #ifdef _DEBUG - // Statistics on the noise-space coords: + // Statistics on the noise-space coords: if (NumSameX == 1) { m_NumSingleX++; @@ -780,7 +786,7 @@ void cCubicNoise::CalcFloorFrac( -/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////////////// // cPerlinNoise: cPerlinNoise::cPerlinNoise(void) : @@ -812,7 +818,7 @@ void cPerlinNoise::SetSeed(int a_Seed) void cPerlinNoise::AddOctave(float a_Frequency, float a_Amplitude) { - m_Octaves.push_back(cOctave(m_Seed * (m_Octaves.size() + 4) * 4 + 1024, a_Frequency, a_Amplitude)); + m_Octaves.push_back(cOctave(m_Seed * ((int)m_Octaves.size() + 4) * 4 + 1024, a_Frequency, a_Amplitude)); } @@ -852,7 +858,7 @@ void cPerlinNoise::Generate2D( NOISE_DATATYPE Amplitude = FirstOctave.m_Amplitude; for (int i = 0; i < ArrayCount; i++) { - a_Array[i] *= Amplitude; + a_Array[i] = a_Workspace[i] * Amplitude; } // Add each octave: @@ -875,6 +881,7 @@ void cPerlinNoise::Generate2D( if (ShouldFreeWorkspace) { delete[] a_Workspace; + a_Workspace = NULL; } } @@ -941,6 +948,177 @@ void cPerlinNoise::Generate3D( if (ShouldFreeWorkspace) { delete[] a_Workspace; + a_Workspace = NULL; + } +} + + + + + +//////////////////////////////////////////////////////////////////////////////// +// cRidgedMultiNoise: + +cRidgedMultiNoise::cRidgedMultiNoise(void) : + m_Seed(0) +{ +} + + + + + +cRidgedMultiNoise::cRidgedMultiNoise(int a_Seed) : + m_Seed(a_Seed) +{ +} + + + + + +void cRidgedMultiNoise::SetSeed(int a_Seed) +{ + m_Seed = a_Seed; +} + + + + + +void cRidgedMultiNoise::AddOctave(float a_Frequency, float a_Amplitude) +{ + m_Octaves.push_back(cOctave(m_Seed * ((int)m_Octaves.size() + 4) * 4 + 1024, a_Frequency, a_Amplitude)); +} + + + + + +void cRidgedMultiNoise::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_Workspace ///< Workspace that this function can use and trash +) const +{ + if (m_Octaves.empty()) + { + // No work to be done + ASSERT(!"RidgedMulti: No octaves to generate!"); + return; + } + + bool ShouldFreeWorkspace = (a_Workspace == NULL); + int ArrayCount = a_SizeX * a_SizeY; + if (ShouldFreeWorkspace) + { + a_Workspace = new NOISE_DATATYPE[ArrayCount]; + } + + // Generate the first octave directly into array: + const cOctave & FirstOctave = m_Octaves.front(); + + FirstOctave.m_Noise.Generate2D( + a_Workspace, a_SizeX, a_SizeY, + a_StartX * FirstOctave.m_Frequency, a_EndX * FirstOctave.m_Frequency, + a_StartY * FirstOctave.m_Frequency, a_EndY * FirstOctave.m_Frequency + ); + NOISE_DATATYPE Amplitude = FirstOctave.m_Amplitude; + for (int i = 0; i < ArrayCount; i++) + { + a_Array[i] = fabs(a_Workspace[i] * Amplitude); + } + + // Add each octave: + for (cOctaves::const_iterator itr = m_Octaves.begin() + 1, end = m_Octaves.end(); itr != end; ++itr) + { + // Generate cubic noise for the octave: + itr->m_Noise.Generate2D( + a_Workspace, a_SizeX, a_SizeY, + a_StartX * itr->m_Frequency, a_EndX * itr->m_Frequency, + a_StartY * itr->m_Frequency, a_EndY * itr->m_Frequency + ); + // Add the cubic noise into the output: + NOISE_DATATYPE Amplitude = itr->m_Amplitude; + for (int i = 0; i < ArrayCount; i++) + { + a_Array[i] += fabs(a_Workspace[i] * Amplitude); + } + } + + if (ShouldFreeWorkspace) + { + delete[] a_Workspace; + a_Workspace = NULL; + } +} + + + + + +void cRidgedMultiNoise::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_Workspace ///< Workspace that this function can use and trash +) const +{ + if (m_Octaves.empty()) + { + // No work to be done + ASSERT(!"RidgedMulti: No octaves to generate!"); + return; + } + + bool ShouldFreeWorkspace = (a_Workspace == NULL); + int ArrayCount = a_SizeX * a_SizeY * a_SizeZ; + if (ShouldFreeWorkspace) + { + a_Workspace = new NOISE_DATATYPE[ArrayCount]; + } + + // Generate the first octave directly into array: + const cOctave & FirstOctave = m_Octaves.front(); + + FirstOctave.m_Noise.Generate3D( + a_Workspace, a_SizeX, a_SizeY, a_SizeZ, + a_StartX * FirstOctave.m_Frequency, a_EndX * FirstOctave.m_Frequency, + a_StartY * FirstOctave.m_Frequency, a_EndY * FirstOctave.m_Frequency, + a_StartZ * FirstOctave.m_Frequency, a_EndZ * FirstOctave.m_Frequency + ); + NOISE_DATATYPE Amplitude = FirstOctave.m_Amplitude; + for (int i = 0; i < ArrayCount; i++) + { + a_Array[i] = a_Workspace[i] * Amplitude; + } + + // Add each octave: + for (cOctaves::const_iterator itr = m_Octaves.begin() + 1, end = m_Octaves.end(); itr != end; ++itr) + { + // Generate cubic noise for the octave: + itr->m_Noise.Generate3D( + a_Workspace, a_SizeX, a_SizeY, a_SizeZ, + a_StartX * itr->m_Frequency, a_EndX * itr->m_Frequency, + a_StartY * itr->m_Frequency, a_EndY * itr->m_Frequency, + a_StartZ * itr->m_Frequency, a_EndZ * itr->m_Frequency + ); + // Add the cubic noise into the output: + NOISE_DATATYPE Amplitude = itr->m_Amplitude; + for (int i = 0; i < ArrayCount; i++) + { + a_Array[i] += a_Workspace[i] * Amplitude; + } + } + + if (ShouldFreeWorkspace) + { + delete[] a_Workspace; + a_Workspace = NULL; } } |