mi::neuraylib::IMdl_evaluator_api Class Reference
[Miscellaneous MDL-related Interfaces]
Description
Provides access to various functions for the evaluation of MDL expressions.
Public Member Functions
- virtual const IValue_bool* is_function_parameter_enabled( ITransaction* trans, IValue_factory* fact, const IFunction_call* call, Size index, Sint32* error) const =0
- Evaluates if a function call parameter is enabled, i.e., the enable_if condition evaluates to true). More...
Member Functions
- virtual const IValue_bool* mi::neuraylib::IMdl_evaluator_api::is_function_parameter_enabled( ITransaction* trans, IValue_factory* fact, const IFunction_call* call, Size index, Sint32* error) const [pure virtual]
-
Evaluates if a function call parameter is enabled, i.e., the enable_if condition evaluates to true).
Parameters
- trans
- the transaction
- fact
- the expression factory to create the result value
- call
- the function call
- index
- the index of the material instance parameter
- error
- An optional pointer to an mi::Sint32 to which an error code will be written. The error codes have the following meaning:
- 0: Success.
- -1: An input parameter is NULL.
- -2: The parameter index is out of bounds.
- -3: A malformed expression (contains temporaries).
- -4: An unsupported expression occurred.
- -5: The evaluation was aborted, too complex to evaluate.
Returns
NULL if the condition was to complex to evaluate, else true or false .