Intersect 3D VEX node

Intersects a 3D image along the line specified by two points.

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

This operator intersects a 3D image along the line specified by two points. The ray will intersect the iso-surface of the texture at the density specified. If an intersection is found, hit is 1 and hitpos will contain the point position of the intersection.

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

Parameters

3D Image

3D image file used for look-up

Channel

Channel to be integrated

Start Position

3D location in the image where to start integrating

End Position

3D location in the image where to stop integrating

Density

The density at which to intersect the iso-surface

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