C++ (Cpp) Perlin::GetValue Examples

Example #1

File: SandPit.cpp Project: simple-entertainment/bobs-island

float getHeight(int x, int y)
{
	float height = static_cast<float>(perlinNoise.GetValue(static_cast<double>(x) / perlinFrequency, 0.5,
														   static_cast<double>(y) / perlinFrequency)) + 1.0f;

	height /= 2.0f;
	float distanceFromOrigin = static_cast<float>(Vector2i(x - halfMapSize, y - halfMapSize).getMagnitude());
	float fractionFromOrigin = (1.0f - distanceFromOrigin / static_cast<float>(halfMapSize));
	height *= fractionFromOrigin * peakAmplitude;
	height += fractionFromOrigin * peakHeight - peakAmplitude;
	return height;
}