[x3d-public] Negative scale and winding order

[Holger Seelig]

Calculation of the determinant should not be so expensive, because you only need to calculate the determinant of the 3x3 sub-matrix (scale-rotation). A proper algorithm should have not more that 9 mult and 5 add/sub, that's really not much.

--
Holger Seelig
Leipzig, Germany

holger.seelig at yahoo.de
https://create3000.github.io/x_ite/

> Am 22.09.2023 um 19:00 schrieb Andreas Plesch <andreasplesch at gmail.com>:
> 

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