087b7e7abf
This code was not tested and breaks in Release builds, reverting to restore
functionality of the nightly. All in-game menus do not work and generating
a world crashes.
This reverts commit a9be52c41a.
115 lines
2.7 KiB
C++
115 lines
2.7 KiB
C++
#include "stdafx.h"
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#include "PerlinSimplexNoise.h"
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PerlinSimplexNoise::PerlinSimplexNoise(int levels)
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{
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Random random;
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init(&random,levels);
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}
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PerlinSimplexNoise::PerlinSimplexNoise(Random *random, int levels)
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{
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init(random,levels);
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delete random;
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}
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void PerlinSimplexNoise::init(Random *random, int levels)
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{
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MemSect(3);
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this->levels = levels;
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noiseLevels = new SimplexNoise *[levels];
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for (int i = 0; i < levels; i++)
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{
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noiseLevels[i] = new SimplexNoise(random);
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}
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MemSect(0);
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}
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PerlinSimplexNoise::~PerlinSimplexNoise()
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{
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for(int i = 0; i < levels; i++ )
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{
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delete noiseLevels[i];
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}
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delete[] noiseLevels;
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}
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double PerlinSimplexNoise::getValue(double x, double y)
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{
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double value = 0;
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double pow = 1;
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for (int i = 0; i < levels; i++)
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{
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value += noiseLevels[i]->getValue(x * pow, y * pow) / pow;
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pow /= 2;
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}
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return value;
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}
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double PerlinSimplexNoise::getValue(double x, double y, double z)
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{
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double value = 0;
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double pow = 1;
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for (int i = 0; i < levels; i++)
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{
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value += noiseLevels[i]->getValue(x * pow, y * pow, z * pow) / pow;
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pow /= 2;
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}
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return value;
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}
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doubleArray PerlinSimplexNoise::getRegion(doubleArray buffer, double x, double y, int xSize, int ySize, double xScale, double yScale, double sizeScale)
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{
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return getRegion(buffer, x, y, xSize, ySize, xScale, yScale, sizeScale, 0.5);
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}
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doubleArray PerlinSimplexNoise::getRegion(doubleArray buffer, double x, double y, int xSize, int ySize, double xScale, double yScale, double sizeScale, double powScale)
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{
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xScale/=1.5;
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yScale/=1.5;
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if (buffer.data == NULL || (int) buffer.length < xSize * ySize)
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{
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if( buffer.data ) delete [] buffer.data;
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buffer = doubleArray(xSize * ySize);
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}
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else for (unsigned int i = 0; i < buffer.length; i++)
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buffer[i] = 0;
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double pow = 1;
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double scale = 1;
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for (int i = 0; i < levels; i++)
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{
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noiseLevels[i]->add(buffer, x, y, xSize, ySize, xScale * scale, yScale * scale, 0.55/pow);
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scale *= sizeScale;
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pow *= powScale;
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}
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return buffer;
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}
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doubleArray PerlinSimplexNoise::getRegion(doubleArray buffer, double x, double y, double z, int xSize, int ySize, int zSize, double xScale, double yScale, double zScale)
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{
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xScale/=1.5;
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yScale/=1.5;
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if (buffer.data == NULL) buffer = doubleArray(xSize * ySize * zSize);
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else for (unsigned int i = 0; i < buffer.length; i++)
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buffer[i] = 0;
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double pow = 1;
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for (int i = 0; i < levels; i++) {
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// value += noiseLevels[i].getValue(x * pow, y * pow, z * pow) / pow;
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noiseLevels[i]->add(buffer, x, y, z, xSize, ySize, zSize, xScale * pow, yScale * pow, zScale * pow, 0.55/pow);
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pow *= 0.5;
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}
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return buffer;
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} |