Properties

Describes the types of properties that can be added to metanode definitions and how their data is stored

Standard Types

Single element value property types

Type	Internal Type	API Function
VR_BOOL	bool	VRAddPropertyBool
VR_CHAR	char	VRAddPropertyChar
VR_INT	int	VRAddPropertyInt
VR_FLOAT	float	VRAddPropertyFloat
VR_DOUBLE	double	VRAddPropertyDouble
VR_WORLD_FLOAT	double (in x64 versions)	VRAddPropertyWorldFloat
VR_LINK	UserClass	VRAddPropertyLink
VR_STRING	const char*	VRAddPropertyString

Array and Vector types

The above properties (except links and strings) can be stored in array or vector properties, too.

An array property is fixed size, defined when the property is added to the metanode.

There are a number of standard array property types such as VRAddPropertyMat3f or VRAddPropertyVec4w, or array properties of arbitrary size can be defined.

Type	Internal Type	API Function
VR_BOOL	bool[]	VRAddPropertyArrayBool
VR_CHAR	char[]	VRAddPropertyArrayChar
VR_INT	int[]	VRAddPropertyArrayInt
VR_FLOAT	float[]	VRAddPropertyArrayFloat
VR_DOUBLE	double[]	VRAddPropertyArrayDouble
VR_WORLD_FLOAT	double[] (in x64 versions)	VRAddPropertyArrayWorldFloat

Vector properties are variable size, allowing data to be added and removed at runtime. This is usually used for storing mesh vertices, etc.

Type	Internal Type	API Function
VR_CHAR	vector(char)	VRAddPropertyVectorChar
VR_INT	vector(int)	VRAddPropertyVectorInt
VR_FLOAT	vector(float)	VRAddPropertyVectorFloat
VR_WORLD_FLOAT	vector(double) (in x64 versions)	VRAddPropertyVectorWorldFloat
VR_STRING	vector(string)	VRAddPropertyVectorString

Semantics and Hints

Properties can be given semantics and gui hints.

Storage

Properties added to a metanode are indexed in the order they are added, however, the internal memory used to store the property data on a specific node instance may be re-arranged to provide more optimal alignment for performance improvement and platform / architecture compatibility. This is transparent to the API.