bbm_fromstring.h File Reference

fromString support for BBM More...

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Macros
#define	BBM_EXPORT_BSDFMODEL(BsdfModel)   make_named<BsdfModel<Config>::name>( bbm::fromString<BsdfModel<Config>> ),

Detailed Description

fromString support for BBM

Export bbm::fromString<BsdfMOdel> method calls to a named tuple with the name set to BsdfModel::name.

Parameters

BsdfModel

= the class name of the BSDF model to create a fromString handle for

Assumes that:

1. a bbm::fromString<BsdfModel> specialization exists for BsdfModel, either by using the default constructor (constructor_args_t is defined), or by a specialized static BsdfModel::fromString method.
2. a BsdfModel::name static constexpr string_literal exists
3. the BsdfModel takes a single template parameter that is the configuration. Furthermore, we assume that a typedef Config exists.

The macro will construct a named tuple with a single name (the BsdfModel::name), and a function pointer to the corresponding bbm::fromString<BsdfModel> specialization as value.

Note: the creation of the named tuple is followed by a comma, not a semi comma. It is expected that all named tuples from the different bsdfmodel are then concat in a single tuple. See bsdf_ptr for it usage. Example:

auto bsdf_fromString  = named_cat(
          #include "bbm_bsdfmodels.h"
          make_named<"dummy">(null_ptr)
          );
 
auto Bsdf = bbm::get<"Lambertian">(bsdf_fromString)("Lambertian([1,1,1])");

This example will create a bsdf_fromString named tuple, where the names are the bsdfmodel names, and the values are function pointers to the corresponding fromString method. The second line passes a string to the fromString method that corresponds to the Lambertian bsdfmodel.

Note: because each entry ends with a comma, we need to add one 'dummy' entry to close the list of named tuples.

Macro Definition Documentation

BBM_EXPORT_BSDFMODEL

#define BBM_EXPORT_BSDFMODEL

(

BsdfModel

)

make_named<BsdfModel<Config>::name>( bbm::fromString<BsdfModel<Config>> ),