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Added HybridMultiF 3D & 4D

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*new constructors for simple noises
*minor bufixes


Former-commit-id: 2f1e9b6b54087e79b3ac52fefc9bbd67fd45c0eb
This commit is contained in:
Remi Beges
2012-11-13 19:27:48 +01:00
parent 8f04f3e6a0
commit a0b7364eed
18 changed files with 249 additions and 10 deletions
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20
src/Nazara/Noise/HybridMultifractal2D.cpp
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@@ -30,23 +30,23 @@ float NzHybridMultiFractal2D::GetValue(float x, float y, float resolution)
{
this->RecomputeExponentArray();
float offset = 1.0f;
m_offset = 1.0f;
m_value = (m_source->GetValue(x,y,resolution) + offset) * m_exponent_array[0];
float weight = m_value;
float signal;
m_value = (m_source->GetValue(x,y,resolution) + m_offset) * m_exponent_array[0];
m_weight = m_value;
m_signal = 0.f;
resolution *= m_lacunarity;
for(int i(1) ; i < m_octaves; ++i)
{
if(weight > 1.0)
weight = 1.0;
if(m_weight > 1.0)
m_weight = 1.0;
signal = (m_source->GetValue(x,y,resolution) + offset) * m_exponent_array[i];
m_value += weight * signal;
m_signal = (m_source->GetValue(x,y,resolution) + m_offset) * m_exponent_array[i];
m_value += m_weight * m_signal;
weight *= signal;
m_weight *= m_signal;
resolution *= m_lacunarity;
}
@@ -56,7 +56,7 @@ float NzHybridMultiFractal2D::GetValue(float x, float y, float resolution)
if(remainder != 0)
m_value += m_remainder * m_source->GetValue(x,y,resolution) * m_exponent_array[static_cast<int>(m_octaves-1)];
return m_value/this->m_sum;
return m_value/this->m_sum - m_offset;
}
NzHybridMultiFractal2D::~NzHybridMultiFractal2D()