Value Class Reference

A generic, discriminated value, whose type may be queried dynamically. More...

#include <Value.h>

Inheritance diagram for Value:

Public Types
enum	FloatFormat { FloatFormatDefault = 0 , FloatFormatFixed = 1 , FloatFormatScientific = 2 }
	Float formats to use when converting values to strings.

Public Member Functions
virtual ValuePtr	copy () const =0
	Create a deep copy of the value. More...

Static Public Member Functions
template<class T >
static ValuePtr	createValue (const T &data)
	Create a new value from an object of any valid MaterialX type.
static ValuePtr	createValue (const char *data)
static ValuePtr	createValueFromStrings (const string &value, const string &type)
	Create a new value instance from value and type strings. More...

Data Accessors
using	CreatorFunction = ValuePtr(*)(const string &)
using	CreatorMap = std::unordered_map< string, CreatorFunction >
template<class T >
class	ValueRegistry
template<class T >
bool	isA () const
	Return true if this value is of the given type.
template<class T >
const T &	asA () const
	Return our underlying data as an object of the given type. More...
virtual const string &	getTypeString () const =0
	Return the type string for this value. More...
virtual string	getValueString () const =0
	Return the value string for this value. More...
static void	setFloatFormat (FloatFormat format)
	Set float formatting for converting values to strings. More...
static void	setFloatPrecision (int precision)
	Set float precision for converting values to strings.
static FloatFormat	getFloatFormat ()
	Return the current float format.
static int	getFloatPrecision ()
	Return the current float precision.

Detailed Description

A generic, discriminated value, whose type may be queried dynamically.

Member Function Documentation

asA()

const T & asA

Return our underlying data as an object of the given type.

If the given type doesn't match our own data type, then an exception is thrown.

copy()

virtual ValuePtr copy ( ) const

pure virtual

Create a deep copy of the value.

Implemented in TypedValue< T >.

createValueFromStrings()

ValuePtr createValueFromStrings ( const string &  value, const string &  type  )

static

Create a new value instance from value and type strings.

Returns

A shared pointer to a typed value, or an empty shared pointer if the conversion to the given data type cannot be performed.

getTypeString()

virtual const string & getTypeString ( ) const

pure virtual

Return the type string for this value.

Implemented in TypedValue< T >.

getValueString()

virtual string getValueString ( ) const

pure virtual

Return the value string for this value.

Implemented in TypedValue< T >.

setFloatFormat()

static void setFloatFormat ( FloatFormat  format )

inlinestatic

Set float formatting for converting values to strings.

Formats to use are FloatFormatFixed, FloatFormatScientific or FloatFormatDefault to set default format.

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The documentation for this class was generated from the following files:

• source/MaterialXCore/Value.h
• source/MaterialXCore/Value.cpp