Compute silhouette of unordered faces

Compute the silhouette region of a surface consisting of unordered 3dface entities on a reference plane.

Access methods

8 Toolbar:

8 Menu: ComputationalCAD † Compute silhouette

7 Command entry: CC:FACES:SILHOUETTE

Dialog

Select faces:
Select the 3dfaces defining the surface.

Specify reference plane [Wcs/Ucs/3Point]:
Specify the reference plane of the silhouette. Default is <Wcs>.

Minimum projected edge length:
Specify the minimum length of the projection of the faces onto the reference plane. Default is <0.01>.

Summary

The silhouette of a surface is the visible outer bound of all faces. In order to do this, the projection of the input faces onto the reference plane must not be degenerate. In order to achieve this, the projected faces will be healed so that no projected edge will be shorter than specified.

Example

Figure 25: 45k faces and silhouette region thereof (below)