Support for faces with more than 4 vertices

Question

Support for faces with more than 4 vertices

gpvigano opened this issue 7 years ago · 7 comments

Currently AsImpL supports faces with 3 or 4 vertices.
A proper triangulation algorithm should be implemented to support faces with more vertices.

Answer 1 · 2018-03-30T13:38:54.000Z

Added a very simple triangulation in the OBJ loader (see b388f43), improvements can be done.

Answer 2 · 2018-04-03T12:38:52.000Z

The current triangulation does not work for concave polygons, i.e. the guitar model referenced by @LucasWalters in issue #3 looks like this:

(notice the wrong triangulation of the dark polygon in the centre)

Answer 3 · 2018-09-17T14:31:12.000Z

Is this inverted face issue solved? do we have a updated plugin now?
And many thanks @gpvigano, this plugin is just awesome :)

Answer 4 · 2018-09-17T15:00:02.000Z

Sorry, not yet. I think there's not a trivial solution (a proper triangulation algorithm must be implemented) and I understand this is an important issue, but I haven't a solution, at the moment.
I hope someone will help us.

Answer 5 · 2019-01-11T15:57:58.000Z

To ease the integration of external triangulation code in AsImpL I moved triangulation to a proper method in the Dataset/Triangulator.cs script. See my commit.

Here we can find a solution for the triangulation of convex polygons. The author allows integrating that code into AsImpL.

Answer 6 · 2019-01-17T13:35:38.000Z

I finally managed to implement a decent triangulation in my last commit, starting from Erik Nordeus's tutorial.
Here you can see how the previous guitar model is loaded now:

I hope someone will test this new version and will give me a feedback...

Answer 7 · 2019-04-15T13:39:36.000Z

Looks good, thanks for the update!