Public Member Functions
	LM_COMPONENT_IMPL_DEF ("default")

virtual Sampler *	Clone () const override

virtual void	SetSeed (unsigned int seed) override

virtual Math::Float	Next () override

virtual unsigned int	NextUInt () override

virtual Math::Vec2	NextVec2 () override

virtual Random *	Rng () override

virtual void	Configure (Random *rng) override

virtual void	Rewind (int index) override

virtual int	SampleIndex () const override

Public Member Functions inherited from RewindableSampler
	LM_COMPONENT_INTERFACE_DEF ("rewindablesampler")

Public Member Functions inherited from Sampler
LM_PUBLIC_API void	SetSeedWithCurrentTime ()

Public Member Functions inherited from Component
virtual std::string	ComponentInterfaceTypeName () const =0

virtual std::string	ComponentImplTypeName () const =0

Public Member Functions inherited from SIMDAlignedType
void *	operator new (std::size_t size) throw (std::bad_alloc)

void	operator delete (void *p)

Inheritance diagram for RewindableSamplerImpl:

Member Function Documentation

virtual Sampler* RewindableSamplerImpl::Clone ( ) const

inlineoverridevirtual

Clone the sampler.

Returns: Duplicated sampler.

Implements Sampler.

virtual void RewindableSamplerImpl::Configure ( Random * rng )

inlineoverridevirtual

Configure the sampler. Initializes underlying random number generator with the given value. This function must be called before use. Ownership of #rng is delegated to this class. Seed is not explicitly refreshed, so do not forget to call SetSeed after calling this function before use.

Parameters

rng	Random number generator.

Implements RewindableSampler.

virtual Math::Float RewindableSamplerImpl::Next ( )

inlineoverridevirtual

Sample a floating-point value.

Returns: Sampled value.

Implements Sampler.

virtual unsigned int RewindableSamplerImpl::NextUInt ( )

inlineoverridevirtual

Sample a unsigned integer value.

Returns: Sampled value.

Implements Sampler.

virtual Math::Vec2 RewindableSamplerImpl::NextVec2 ( )

inlineoverridevirtual

Sample a floating-point 2d vector value.

Returns: Sampled value.

Implements Sampler.

virtual void RewindableSamplerImpl::Rewind ( int index )

inlineoverridevirtual

Rewind the sampler to the given index. Moves the index of the sampler to #index and gets the sampler ready to regenerate random numbers after #index. The index values can be obtained by SampleIndex function. In the condition of the same seed, this function guarantees to generate same sequence of samples after #index.

Parameters

index Sample index.