Bend/curve polygon

[christopherc]

Hi i need to wrap a polygon over a simple curved surface, my problem is described in a previous thread.

http://techboard.vectorworks.net/ubbthreads/ubbthreads.php?ubb=showflat&Number=91272

The solution given in the previous thread seems great, aside step 4, "Skew 3D command", which i do not understand.

Please help me to understand this step 4.

This is the "skewed" version

1 Cut up the profile in small bands (2x clip surface)

2 Convert to 3D polys in front view

3 2d curve in top view in front of it

4 Skew 3D command

5 Decompose

6 delete all vertical but the first and the last

7 compose.

Thankyou

Chris

Gerard

[Benson Shaw]

In plan view make an arc or spline polyline and extrude it to make the outside surface of your wall. Using a simple arc will result in a slice of pie shape, so stick with the polyline.

Switch to front view and place your 2d cityscape polyline over the extrude. Rescale as necessary.

Use the Project Tool in Project and Trim mode to cut the extrude. The result may be a group. If necessary, enter the group and delete unwanted elements.

In Plan View, use the Shell Tool to create the shell/wall. Adjust wall thickness in OIP.

-B

Edited November 24, 2008 by Benson Shaw