DataTypes

Data Types

VEX has support for the following data types

int	Negative or positive integer values
float	Floating point (i.e. real number) values
vector	A vector of 3 float values. These can be used for colors, positions, directions, etc.
vector4	A vector of 4 float values. These can be used to represent color (with alpha), homogeneous vectors, etc.
matrix3	A matrix of 3x3 float values. These can be used to represent 2-dimensional transforms or 3-dimensional rotation matrices
matrix	A matrix of 4x4 float values. These can be used to represent 3-dimensional transforms.
string	Character strings.

Houdini Parameter Data Types

RSL (Renderman Shading Language) support for the following data types

float	Floating point (i.e. real number) values
point	A vector of 3 float values. These can be used to represent point position.
vector	A vector of 3 float values. These can be used to represent directional vectors.
normal	A vector of 3 float values. These can be used for vector which represent surface normals.
color	A vector of 3 float values. These can be used to represent color.
matrix	A matrix of 4x4 float values. These can be used to represent 3-dimensional transforms.
string	Character strings.
_Arrays_	_Not strictly a data type, but RSL supports 1D arrays of all the basic data types._