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<div> <pre><tt><tt>>enclosed the source code and the pdf file of a first draft on how to<br>
>draw revolving bezier curves. Hope you like it. May be this is a further<br>
>pstricks/ pst-vue3d example for cetan.<br>
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</tt></tt></pre><pre><tt><tt>Dear Hans,</tt></tt></pre></div>
<div> It is a very constructive answer. But I do not have too much time to currently take up this idea by including the calculation of the hidden parts there.<br>
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PS: your file is rather an example for pst-3dplot. On the other hand the file .eps of the tower is missing.<br>
<br>
Manuel<br>
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