mi::IBsdf_buffer Class Reference

Abstract interface for a buffer of BSDF values. More...

Inheritance diagram for mi::IBsdf_buffer:

Public Member Functions
virtual const Float32 *	get_data () const =0
	Returns the memory block containing the actual BSDF values. More...

Additional Inherited Members
Public Types inherited from mi::base::Interface_declare< 0xdf3e6121, 0x464e, 0x424b, 0x87, 0x6f, 0x6e, 0x8f, 0x6e, 0x66, 0xe2, 0x9a >
typedef Interface_declare< id1, id2, id3, id4, id5, id6, id7, id8, id9, id10, id11, IInterface >	Self
	Own type. More...
typedef Uuid_t< id1, id2, id3, id4, id5, id6, id7, id8, id9, id10, id11 >	IID
	Declares the interface ID (IID) of this interface. More...
Static Public Member Functions inherited from mi::base::Interface_declare< 0xdf3e6121, 0x464e, 0x424b, 0x87, 0x6f, 0x6e, 0x8f, 0x6e, 0x66, 0xe2, 0x9a >
static bool	compare_iid (const Uuid &iid)
	Compares the interface ID iid against the interface ID of this interface and of its ancestors. More...

Detailed Description

Abstract interface for a buffer of BSDF values.

See Also

mi::IBsdf_measurement and mi::IBsdf_isotropic_data for related interfaces

mi::Bsdf_buffer for an example implementation of this interface

Member Function Documentation

virtual const Float32* mi::IBsdf_buffer::get_data ( ) const

pure virtual

Returns the memory block containing the actual BSDF values.

The size of the array is given by

res_theta^2 * res_phi * factor

where res_phi is the value returned by mi::IBsdf_isotropic_data::get_resolution_phi(), res_theta is the value returned by mi::IBsdf_isotropic_data::get_resolution_theta(), and factor is 1 if mi::IBsdf_isotropic_data::get_type() returns mi::BSDF_SCALAR and 3 otherwise.

The index of the (first) element for a particular triple (index_theta_in, index_theta_out, index_phi_in) is given by

factor * (index_theta_in * (res_phi * res_theta) + index_theta_out * res_phi + index_phi)

The pointer returned by this method has to be valid for the lifetime of this interface.

Implemented in mi::Bsdf_buffer.