Texture 3D VEX node

Returns the value of a 3D image at a specified position within that image.

See also: Gradient 3D, Integrate 3D, Texture, Texture 3D Box

This operator returns the value of a 3D image at a specified position within that image.

If the position is outside of the bounding box of the image, the value returned will be 0. If the channel specified contains more values than the return type (i.e. a vector channel when a float return type is desired), the first component of the vector will be returned. If the channel specified contains fewer values than the return type, the missing components will be filled with the last valid channel.

Texture files will be searched for in the path specified by the HOUDINI_TEXTURE_PATH environment variable.

Parameters

Signature

Float, vector, or vector4 values

3D Image

3D image file used for look-up

Channel

Channel to be evaluated

Position

3D location in the image where to evaluate

Filter Type

Type of anti-aliasing filter to be used for evaluation. The options are:

Box	(string value “box”)
Gaussian	(string value “gauss”)
Bartlett/Triangular	(string value “bartlett”)
Sinc Sharpening	(string value “sinc”)
Hanning	(string value “hanning”)
Blackman	(string value “blackman”)
Catmull-Rom	(string value “catrom”)
Mitchell	(string value “mitchell”)
Point Sampling	(string value “point”)

Filter Width

Filter width in both u and v directions

Usages in other examples

Example name	Example for