Talk:OpenSCAD User Manual/Primitive Solids

About the polyhedron
This discussion section started by Msquare (discuss • contribs) 21:51, 23 September 2012 (UTC)


 * I made a simple screenshot edited on paint, hopefully this will work as a more accurate placeholder while eventually something cleaner comes up:
 * https://mega.nz/file/GyRR2TjT#lm6Ej3cs0vFYdXM8Ez2JZOiRjQCv2aJCIz69b6N3Z3w
 * Feel free to use it, i claim no rights to it 190.79.236.128 (discuss) 23:59, 3 April 2023 (UTC)

I have edited the top part of polyhedron. It was not explaining/listing the parameters, now it does. I have merged the two examples into one. (missing the picture)

I feel the lower part can be reduced, but do not want to delete others hard work without some discussion. Flipping one triangle in the pyramid will also show the ordering failure. The more complex example as an example polyhedra is very good (even if the ordering flip is removed)

The "noob" explanation of the clockwise is good, but is now included in the top part in abbreviated form. (And it should not say "noob")

Have not had time to upload the picture of the pyramid example (required account and all that) maybe someone else can do it (the code works)

Polyhedron face points must lie on the same plane?
I'm using OpenSCAD 2019.5. In this version, there doesn't seem to be any problem with non-coplanar points that define a face. You end up with triangles on the face. I've changed the text accordingly. Anachronist (discuss • contribs) 21:20, 9 December 2019 (UTC)

"temporarily"
The section on debugging polyhedra states

> OpenSCAD allows, temporarily, commenting out part of the face descriptions

What is meant by "temporarily" here? Are comments an OpenSCAD feature that will be removed? Or is it that the sentence should rather read like below?

> OpenSCAD allows temporarily commenting out part of the face descriptions

Maybe for clarity it would be best to get rid of the "temporarily" altogether. After all, OpenSCAD also allows to comment out indefinitely and in coding anything is temporary if you want it to be.

Error in Prism example?
Regarding "Example 3 A triangular prism:" The lefthand sketch shows points 2 and 3 to be the 90 degree angle of the side panels, but the fold-out at the right shows the right angles as points 4 and 5. Not really a problem but I took some time to understand what happened :) Jan olieslagers (discuss • contribs) 08:35, 27 September 2020 (UTC)

On the Other Hand
This article references both a right-hand and a left-hand rule for ordering vertices on faces. Both descriptions are correct but it should probably only use one of them