<![CDATA[A questions about project()]]>@z3dev
When I use project() to try to project the .stl model onto a 2d plane, the console prompts:
截屏2021-09-27 下午2.18.08.png
But the 3d model can be displayed normally.

This problem does not appear in all .stl models, only complex .stl models will appear in this problem.

I debugged and found that the cause of this problem was that poly3.toPoints() returned an empty array.
60f9aa8e-2aea-4f4f-8f7a-72975d45abc5-image.png

Should the empty array be filtered before calling poly3.toPoints()？

]]>https://openjscad.nodebb.com/topic/304/a-questions-about-projectRSS for NodeSun, 18 Oct 2026 00:13:59 GMTMon, 27 Sep 2021 06:19:09 GMT60<![CDATA[Reply to A questions about project() on Mon, 27 Sep 2021 09:15:53 GMT]]>@z3dev
Ok, I have submitted an issue on github.
https://github.com/jscad/OpenJSCAD.org/issues/916

]]>https://openjscad.nodebb.com/post/921https://openjscad.nodebb.com/post/921Mon, 27 Sep 2021 09:15:53 GMT<![CDATA[Reply to A questions about project() on Mon, 27 Sep 2021 08:32:57 GMT]]>@jess-yan this could be a bug, but again many STL meshes are full of holes and incomplete.

It would be best to open a new issue at GitHub. And attach one of those ‘bad’ STL files.

]]>https://openjscad.nodebb.com/post/920https://openjscad.nodebb.com/post/920Mon, 27 Sep 2021 08:32:57 GMT