RiBackground

Abstraction of all operations needed for a background object.

This is an abstract class and cannot be directly instanced.

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DESCRIPTION

Class Summary

class RiBackground
{
public:
RiSpectrum GetValue( const RiVector3 &direction ) const; // pure virtual
bool GetSample( const RiVector2 &seed, RiUnitVector3 &direction, RiReal &prob ) const;
protected:
}; // RiBackground

DESCRIPTION

All operations needed for a a background object such as returning the spectral radiance in a given direction or sampling itself are given.

RiSpectrum GetValue( const RiVector3 &direction ) const;

    virtual RiSpectrum GetValue( const RiVector3 &direction ) const;

bool GetSample( const RiVector2 &seed, RiUnitVector3 &direction, RiReal &prob ) const;

 Given a seed returns a sample with prob representing the pdf with solid angle measure. Defaults to prob = cos/pi with z axis "up".

    virtual bool GetSample( const RiVector2 &seed, 
                            RiUnitVector3 &direction,
                            RiReal &prob ) const;

All Members

public:
RiSpectrum GetValue( const RiVector3 &direction ) const; // pure virtual
bool GetSample( const RiVector2 &seed, RiUnitVector3 &direction, RiReal &prob ) const;
protected:

Ancestors

Class does not inherit from any other class.

Descendants

Generated from source by the Cocoon utilities on Fri Feb 25 15:14:57 2000 .