diff options
Diffstat (limited to 'src/Generating/Noise3DGenerator.cpp')
| -rw-r--r-- | src/Generating/Noise3DGenerator.cpp | 61 |
1 files changed, 54 insertions, 7 deletions
diff --git a/src/Generating/Noise3DGenerator.cpp b/src/Generating/Noise3DGenerator.cpp index d051948c4..78b739d32 100644 --- a/src/Generating/Noise3DGenerator.cpp +++ b/src/Generating/Noise3DGenerator.cpp @@ -69,6 +69,15 @@ static class cInterpolNoiseSpeedTest public: cInterpolNoiseSpeedTest(void) { + TestSpeed2D(); + TestSpeed3D(); + printf("InterpolNoise speed comparison finished.\n"); + } + + + /** Compare the speed of the 3D InterpolNoise vs 3D CubicNoise. */ + void TestSpeed3D(void) + { printf("Evaluating 3D noise performance...\n"); static const int SIZE_X = 128; static const int SIZE_Y = 128; @@ -99,6 +108,38 @@ public: printf("3D noise performance comparison finished.\n"); } + + /** Compare the speed of the 2D InterpolNoise vs 2D CubicNoise. */ + void TestSpeed2D(void) + { + printf("Evaluating 2D noise performance...\n"); + static const int SIZE_X = 128; + static const int SIZE_Y = 128; + static const NOISE_DATATYPE MUL = 80; + std::unique_ptr<NOISE_DATATYPE[]> arr(new NOISE_DATATYPE[SIZE_X * SIZE_Y]); + cTimer timer; + + // Test the cInterpolNoise: + cInterpolNoise<Interp5Deg> interpNoise(1); + long long start = timer.GetNowTime(); + for (int i = 0; i < 500; i++) + { + interpNoise.Generate2D(arr.get(), SIZE_X, SIZE_Y, MUL * i, MUL * i + MUL, 0, MUL); + } + long long end = timer.GetNowTime(); + printf("InterpolNoise took %.02f sec\n", static_cast<float>(end - start) / 1000); + + // Test the cCubicNoise: + cCubicNoise cubicNoise(1); + start = timer.GetNowTime(); + for (int i = 0; i < 500; i++) + { + cubicNoise.Generate2D(arr.get(), SIZE_X, SIZE_Y, MUL * i, MUL * i + MUL, 0, MUL); + } + end = timer.GetNowTime(); + printf("CubicNoise took %.02f sec\n", static_cast<float>(end - start) / 1000); + printf("2D noise performance comparison finished.\n"); + } } g_InterpolNoiseSpeedTest; #endif @@ -120,6 +161,12 @@ cNoise3DGenerator::cNoise3DGenerator(cChunkGenerator & a_ChunkGenerator) : m_Perlin.AddOctave(8, 0.125); m_Perlin.AddOctave(16, 0.0625); + m_Cubic.AddOctave(1, 1); + m_Cubic.AddOctave(2, 0.5); + m_Cubic.AddOctave(4, 0.25); + m_Cubic.AddOctave(8, 0.125); + m_Cubic.AddOctave(16, 0.0625); + #if 0 // DEBUG: Test the noise generation: // NOTE: In order to be able to run MCS with this code, you need to increase the default thread stack size @@ -201,8 +248,8 @@ void cNoise3DGenerator::Initialize(cIniFile & a_IniFile) { // Params: m_SeaLevel = a_IniFile.GetValueSetI("Generator", "Noise3DSeaLevel", 62); - m_HeightAmplification = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DHeightAmplification", 0); - m_MidPoint = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DMidPoint", 75); + m_HeightAmplification = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DHeightAmplification", 0.1); + m_MidPoint = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DMidPoint", 68); m_FrequencyX = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DFrequencyX", 8); m_FrequencyY = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DFrequencyY", 8); m_FrequencyZ = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "Noise3DFrequencyZ", 8); @@ -280,23 +327,23 @@ void cNoise3DGenerator::GenerateNoiseArray(int a_ChunkX, int a_ChunkZ, NOISE_DAT // Precalculate a "height" array: NOISE_DATATYPE Height[DIM_X * DIM_Z]; // Output for the cubic noise heightmap ("source") - m_Cubic.Generate2D(Height, DIM_X, DIM_Z, StartX / 25, EndX / 25, StartZ / 25, EndZ / 25); + m_Cubic.Generate2D(Height, DIM_X, DIM_Z, StartX / 5, EndX / 5, StartZ / 5, EndZ / 5); for (size_t i = 0; i < ARRAYCOUNT(Height); i++) { - Height[i] = std::abs(Height[i]) * m_HeightAmplification + 1; + Height[i] = Height[i] * m_HeightAmplification; } // Modify the noise by height data: for (int y = 0; y < DIM_Y; y++) { - NOISE_DATATYPE AddHeight = (y * UPSCALE_Y - m_MidPoint) / 20; - AddHeight *= AddHeight * AddHeight; + NOISE_DATATYPE AddHeight = (y * UPSCALE_Y - m_MidPoint) / 30; + // AddHeight *= AddHeight * AddHeight; for (int z = 0; z < DIM_Z; z++) { NOISE_DATATYPE * CurRow = &(NoiseO[y * DIM_X + z * DIM_X * DIM_Y]); for (int x = 0; x < DIM_X; x++) { - CurRow[x] += AddHeight / Height[x + DIM_X * z]; + CurRow[x] += AddHeight + Height[x + DIM_X * z]; } } } |