Re: XY point list for spiral to DXF?

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "rutexusa" <rutexus@r...>
wrote:

>
> Gentlemen,
>
> I tried to make a spiral within Turbocad without success.
>
> So...I plan to write a short basic program to generate an

archimedean

> spiral with particular dimensions that I want to have waterjet cut

out

> of sheet metal. Then I will have a list of coordinates. I want

to

> inport this list to a cadd program

Tom, Vector will import point lists in several ways (delimited
triplets, plc format, backplot). However, you can draw the spiral
quite easily directly in Vector.

1) Draw one point.

2) Copy and paste it with simultaneous 1) Rotation 2) Scaling, and
3) multiple points

This will result in a spiraling set of points. Connect them with a
cubic spline, arc spline, or one of a couple NURB curve functions.


There is also the clean circle funciton that creates a series of
connected arcs "spiraling" out from the center.

You can also use the Macro toolbar to create a point set using any
mathmatical function you care to program.

Fred Smith - IMService
http://www.cadcamcadcam.com/hobby