*linecreatefromnodes

Create a line which passed through a list of nodes.

Syntax

*linecreatefromnodes list_id type break_angle aspect linear_angle

Type

HyperMesh Tcl Modify

Description

This command creates a line which passes through a list of nodes.

Inputs

list_id
The ID of the list containing the nodes. Valid values are 1 and 2.
type
The type of line to generate. Valid values are:
  • 0 - linear
  • 1 - standard
  • 2 - smooth
  • 3 - user controlled
Adding 8 to any of the values above will create a closed line of that type.
break_angle
Specifies the minimum angle allowed between three points in a line. If the angle between a point and the two adjacent points is less than the angle specified, HyperMesh considers this point to be a point of discontinuity in the line and places a joint (starts a new NURBS) at this location.
aspect
Specifies the maximum ratio allowed for the distance between a point and the previous point in the line and the distance between the same point and the next point in the line. If the ratio of the distance between the two adjacent segments exceeds the aspect ratio defined, HyperMesh places a joint between the segments.
linear_angle
Defines the angle at which HyperMesh should consider a line straight. For example, if the line angle between three consecutive points along the line is greater than the linear angle specified, HyperMesh removes the center point from the line.

Example

To create a smooth line that passes through nodes 1-4:

*createlist nodes 1 1 2 3 4
*linecreatefromnodes 1 2 0.0 0.0 0.0

Errors

Incorrect usage results in a Tcl error. To detect errors, you can use the catch command:
if { [ catch {command_name...} ] } {
   # Handle error
}