WFEXPND Process

• WFEXPND Process
  • Process Overview
  • Input Files
  • Output Files
  • Parameters
  • Example

To access this process:

• Surfaces ribbon >> Process >> File Proceses >> Expand Wireframe.

• Enter "WFEXPND" into the Command Line and press ENTER.

• Display the Find Command screen, locate WFEXPND and click Run.

See this process in the Command Table.

Process Overview

Create a copy of a wireframe, where each triangle has been moved outwards (or inwards) by a set distance.

Input Files

Name	Description	I/O Status	Required	Type
INTR	Input wireframe triangle file.	Input	Yes	Wireframe triangle
INPT	Input wireframe point file.	Input	Yes	Wireframe points

Output Files

Name	I/O Status	Required	Type	Description
OUTTR	Output	Yes	Wireframe triangle	Output wireframe triangle file.
OUTPT	Output	Yes	Wireframe points	Output wireframe point file..

Parameters

Name	Description	Required	Default	Range	Values
DISTANCE	The distance required to move the triangles out by. A positive number will move them in the direction of each triangle normal (usually outwards for a verified closed wireframe, or upwards for a verified open wireframe). A negative distance will move the triangles in the opposite direction (e.g. to shrink a closed volume).	Yes	Undefined	-, +	Undefined
TOLERANC	A value which determines how closely the required distance must be met. This has most effect in the number of triangles added to approximate the path around sharp edges in the wireframe. A smaller tolerance will result in smoother curves but a bigger wireframe. A value of one tenth of the offset distance often provides a good balance between wireframe size and smoothness.	Yes	Undefined	0.001, +	Undefined
SURFBLND	Determines whether blends are created on the boundaries of open wireframes: 0 = don't blend boundaries, 1 =  blend boundaries.	No	1	0,1	0,1

!WFEXPND &INTR(_vb_mintr),&INPT(_vb_minpt),
&OUTTR(outtr),&OUTPT(outpt),
@DISTANCE=5.0,@TOLERANC=1.0,@SURFBLND=1.0