[OpenSCAD] STL file generation non-deterministic?

nop head nop.head at gmail.com
Sat Mar 17 11:07:06 CET 2012


Here is the simplest case. It is just the difference between two cylinders.
99% of the file is the same, just four facets in a different order.



On 17 March 2012 05:43, Giles Bathgate <giles.bathgate at gmail.com> wrote:

> Can you give examples of diffs between two different exports.
>
> Regards
>
> Giles
>
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1101c1101
<   facet normal 1 0 0
---
>   facet normal 0.62349 -0.781831 0
1103c1103,1104
<       vertex -1.7401 0.837986 0
---
>       vertex -0.429768 1.88294 0
>       vertex -0.429768 1.88294 3
1105d1105
<       vertex -1.7401 -0.837986 3
1108c1108
<   facet normal 1 0 0
---
>   facet normal 0.62349 -0.781831 0
1110d1109
<       vertex -1.7401 -0.837986 0
1112c1111,1112
<       vertex -1.7401 -0.837986 3
---
>       vertex -0.429768 1.88294 0
>       vertex -1.7401 0.837986 3
1115c1115
<   facet normal 0.62349 -0.781831 0
---
>   facet normal 1 0 0
1117,1118c1117
<       vertex -0.429768 1.88294 0
<       vertex -0.429768 1.88294 3
---
>       vertex -1.7401 0.837986 0
1119a1119
>       vertex -1.7401 -0.837986 3
1122c1122
<   facet normal 0.62349 -0.781831 0
---
>   facet normal 1 0 0
1123a1124
>       vertex -1.7401 -0.837986 0
1125,1126c1126
<       vertex -0.429768 1.88294 0
<       vertex -1.7401 0.837986 3
---
>       vertex -1.7401 -0.837986 3
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