Three-dimensional space - Introduction to AutoCAD 2011: 2D and 3D Design - page 358

Surface meshes
Surface meshes are controlled by the set variables Surftab1 and Surftab2 .
These variables are set as follows:
At the command line:

Command: enter surftab1 right-click
Enter new value for SURFTAB1 <6>: enter 24
right-click
Command:

The Edgesurf tool - Fig. 17.29
1. Make a new layer colour magenta . Make that layer current.
2. Place the drawing area in the View Cube/Right view. Zoom to All .
3. Construct the polyline to the sizes and shape as shown in Fig. 17.27.
4. Place the drawing area in the View Cube/Top view. Zoom to All .
5. Copy the pline to the right by 250 .
6. Place the drawing in the ViewCube/Isometric view. Zoom to All .
7. With the Line tool, draw lines between the ends of the two plines using
the endpoint osnap (Fig. 17.28). Note that if polylines are drawn they
will not be accurate at this stage.
8. Set SURFTAB1 to 32 and SURFTAB2 to 64 .
9. At the command line:

200

Fig. 17.27 Example - Edgesurf - pline outline

Command: enter edgesurf right-click
Current wire frame density: SURFTAB1=32
SURFTAB2=64
Select object 1 for surface edge: pick one of the
lines (or plines)
Select object 2 for surface edge: pick the next
adjacent line (or pline)
Select object 3 for surface edge: pick the next
adjacent line (or pline)
Select object 4 for surface edge: pick the last
line (or pline)
Command:

Fig. 17.28 Example -
Edgesurf - adding lines
joining the plines

The result is shown in Fig. 17.29 .