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#include "UnityPrefix.h"
#include "ColorModule.h"
#include "Runtime/BaseClasses/ObjectDefines.h"
#include "Runtime/Serialize/TransferFunctions/SerializeTransfer.h"
#include "Runtime/Math/Random/Random.h"
#include "Runtime/Graphics/ParticleSystem/ParticleSystemUtils.h"
template<MinMaxGradientEvalMode mode>
void UpdateTpl(const ParticleSystemParticles& ps, ColorRGBA32* colorTemp, const MinMaxGradient& gradient, const OptimizedMinMaxGradient& optGradient, size_t fromIndex, size_t toIndex)
{
for (size_t q = fromIndex; q < toIndex; ++q)
{
const float time = NormalizedTime(ps, q);
const int random = GenerateRandomByte(ps.randomSeed[q] + kParticleSystemColorGradientId);
ColorRGBA32 value;
if(mode == kGEMGradient)
value = EvaluateGradient (optGradient, time);
else if(mode == kGEMGradientMinMax)
value = EvaluateRandomGradient (optGradient, time, random);
else
value = Evaluate (gradient, time, random);
colorTemp[q] *= value;
}
}
ColorModule::ColorModule () : ParticleSystemModule(false)
{}
void ColorModule::Update (const ParticleSystemParticles& ps, ColorRGBA32* colorTemp, size_t fromIndex, size_t toIndex)
{
DebugAssert(toIndex <= ps.array_size());
OptimizedMinMaxGradient gradient;
m_Gradient.InitializeOptimized(gradient);
if(m_Gradient.minMaxState == kMMGGradient)
UpdateTpl<kGEMGradient>(ps, colorTemp, m_Gradient, gradient, fromIndex, toIndex);
else if(m_Gradient.minMaxState == kMMGRandomBetweenTwoGradients)
UpdateTpl<kGEMGradientMinMax>(ps, colorTemp, m_Gradient, gradient, fromIndex, toIndex);
else
UpdateTpl<kGEMSlow>(ps, colorTemp, m_Gradient, gradient, fromIndex, toIndex);
}
template<class TransferFunction>
void ColorModule::Transfer (TransferFunction& transfer)
{
ParticleSystemModule::Transfer (transfer);
transfer.Transfer (m_Gradient, "gradient");
}
INSTANTIATE_TEMPLATE_TRANSFER(ColorModule)
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