IBM Visualization Data Explorer User's Reference

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Tube

Category

Annotation

Function

Changes a specified line into a tube.

Syntax


tube = Tube(line, diameter, ngon, style);

Inputs
Name Type Default Description
line field none line to be drawn as a tube
diameter scalar input dependent tube diameter
ngon integer 8 number of sides to the tube
style string "sphere" style of tube caps

Outputs
Name Type Description
tube field a renderable tube

Functional Details

This module is intended for use with any module that creates lines (e.g., Streamline).

line

specifies the line that is to be changed into a tube. If a "normals" component is present (as would occur if the input field curl were used with Streamline or if the flag parameter is set in Streamline), the tube shows a corresponding twist. To show the twist most effectively, use the Ribbon module. Excessive amounts of twist can produce a pinching effect.

diameter

specifies the tube diameter in the same units as those of the original space. If this parameter is not specified, the module provides an appropriate value (1/50 of the diagonal of the boundary box of line. This value is attached to the output tube as an attribute called "Tube diameter," which can be extracted with the Attribute module.

ngon

specifies the number of sides of the cross-sectional polygon of the tube.

style

in the current version of Data Explorer has no effect.

Components

Creates new "positions," "connections," and "normals" components. All other components are propagated to the output.

Example Visual Programs

Imide_potential.net
Interop.net
PlotLine2.net
RubberTube.net

See Also

 FaceNormals,  Ribbon,  Streakline,  Streamline


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