00:02 <gbruno> [github] kintel opened issue #5421 (macOS: Sign and notarize the latest release: OpenSCAD-2021.01) https://github.com/openscad/openscad/issues/5421

00:02 <gbruno> [github] kintel edited issue #880 (Mac OS X: Sign application [$55]) https://github.com/openscad/openscad/issues/880

01:03 <gbruno> [github] kintel pushed 2 modifications (Automatically sign and notarize development snapshots. (#5420)) https://github.com/openscad/openscad/commit/2abb4f35cfdc35ecb96314820694be6afdd8d630

01:03 <gbruno> [github] kintel closed pull request #5420 (Automatically sign and notarize development snapshots.) https://github.com/openscad/openscad/pull/5420

01:31 <gbruno> [github] kintel closed pull request #5417 (feat(ci): add dependabot to keep GH Actions up to date) https://github.com/openscad/openscad/pull/5417

01:31 <gbruno> [github] kintel pushed 1 additions (feat(ci): add dependabot to keep GH Actions up to date (#5417) Limit bot to update only monthly to avoid spam and save resources. Also group to one PR to limit PR spam.) https://github.com/openscad/openscad/commit/1b34810a92e049634d9f7f6e0e3bbfc9a817a139

01:44 <gbruno> [github] dependabot[bot] opened pull request #5422 (Bump the github-actions group with 2 updates) https://github.com/openscad/openscad/pull/5422

01:44 <gbruno> [github] dependabot[bot] pushed 2 modifications (Bump the github-actions group with 2 updates Bumps the github-actions group with 2 updates: [github/codeql-action](https://github.com/github/codeql-action) and [actions/cache](https://github.com/actions/cache). Updates `github/codeql-action` from 2 to 3 - [Release notes](https://github.com/github/codeql-action/releases) - [Changelog](https://github.com/github/codeql-action/blob/main/CHANGELOG.md) - [Commits]

02:49 <pca006132> InPhase: yes, most of the operations are deterministic even when run in parallel, but we have some optimization that let threads race against each other to get some performance improvement, and that is not something that can be made deterministic

02:51 <InPhase> pca006132: But can it be kept parallel in a way where those same calculations yield deterministic results that are consistent between systems?

02:51 <pca006132> no

02:52 <pca006132> well, the answer should be we don't know yet

02:52 <InPhase> What is the source of this not being possible?

02:52 <InPhase> In some sort of brief summary if you can.

02:54 <pca006132> we cannot predict the result size of some operations, but we need that information to determine the operation order

02:54 <pca006132> so things are racing against each other, and we use the immediate result to schedule operations

02:55 <pca006132> because mesh boolean is not really associative if you want identical results (because floating points...), different order of operations changes the result slightly

02:56 <pca006132> you can stick to a deterministic order, but having non-deterministic order allows things to run slightly faster

02:57 <pca006132> and if we want something truly deterministic (we are not having that right now), we have to avoid a lot of parallel computation with floating point, or be very careful about it

03:22 <gbruno> [github] kintel closed pull request #5414 (Update manifold) https://github.com/openscad/openscad/pull/5414

03:22 <gbruno> [github] kintel pushed 6 modifications (Update manifold (#5414) * Update manifold * Remove ENABLE_TBB) https://github.com/openscad/openscad/commit/9c21b9592bd294b5edbd3696debb0e42e48dba62

03:23 <gbruno> [github] kintel closed pull request #5422 (Bump the github-actions group with 2 updates) https://github.com/openscad/openscad/pull/5422

03:23 <gbruno> [github] kintel pushed 2 modifications (Bump the github-actions group with 2 updates (#5422) Bumps the github-actions group with 2 updates: [github/codeql-action](https://github.com/github/codeql-action) and [actions/cache](https://github.com/actions/cache).

06:04 <gbruno> [github] folkertvanheusden synchronize pull request #5393 (Povray viewport) https://github.com/openscad/openscad/pull/5393

12:24 <gbruno> [github] kintel closed pull request #5393 (Povray viewport) https://github.com/openscad/openscad/pull/5393

12:24 <gbruno> [github] kintel pushed 10 additions 6 modifications 1 removals (Povray viewport (#5393)) https://github.com/openscad/openscad/commit/6baf982dc95c91829251fab871bf66554386ece1

19:02 <gbruno> [github] t-paul opened pull request #5423 (Italian localization, contributed via email.) https://github.com/openscad/openscad/pull/5423

19:03 <gbruno> [github] t-paul pushed 1 additions 1 modifications (Italian localization, contributed via email.) https://github.com/openscad/openscad/commit/272be21c138b0206a80176520373e87a188847d2

19:06 <gbruno> [github] t-paul edited pull request #5423 (Italian localization, contributed via email.) https://github.com/openscad/openscad/pull/5423

19:27 <gbruno> [github] cjmayo opened pull request #5424 (Remove obsolete Manifold Python CMake commands) https://github.com/openscad/openscad/pull/5424

19:48 <gbruno> [github] cjmayo edited pull request #5424 (Remove obsolete Manifold Python CMake commands) https://github.com/openscad/openscad/pull/5424

19:56 <gbruno> [github] t-paul pushed 1 modifications (Add attribution to about dialog.) https://github.com/openscad/openscad/commit/73bc55871d1d1c49ca6361e5fa4d1c18bb0ea7f4

19:56 <gbruno> [github] t-paul synchronize pull request #5423 (Italian localization, contributed via email.) https://github.com/openscad/openscad/pull/5423

20:15 <gbruno> [github] thehans closed issue #5419 (Unable to access files containing non-English letters in the path) https://github.com/openscad/openscad/issues/5419

20:20 <guso78k> It appears that openscad is terribly missing an option to extract the mesh from a solid/module. Imageine for a moment that i wanted to code such a function which would return an openSCAD list of coordinates.  Accepting the fact that openSCAD would have to render the geomtry prior to getting coordinates: is it conceptoinally possible to access

20:20 <guso78k> module information from within openscad functions ?

22:00 <teepee> guso78k: this code exists in the object PT

22:00 <teepee> *PR