[Question] Multicolour meshes?

[sigmasoldi3r]

Is there a way to specify the colour of a triangle? I've seen that you should implement Into<Model>, but I didn't see the colour parameter in the Triangle nor the Vertex struct, and I was wondering if it was possible or planned.

For example, in multicolour models you can find sections like this:

<!-- ... -->
     <triangle v1="124" v2="30" v3="125"/>
     <triangle v1="125" v2="30" v3="0"/>
     <triangle v1="125" v2="0" v3="54"/>
<!-- ... -->
     <triangle v1="129" v2="127" v3="130" paint_color="8"/>
     <triangle v1="129" v2="130" v3="131" paint_color="8"/>
     <triangle v1="131" v2="130" v3="132" paint_color="8"/>
<!-- ... -->

[hannobraun]

I'm not sure, if there's a way to do it. I've never done it myself, but it might have been contributed at some point.

If such a parameter is missing in the places you'd expect it though, then I assume it's not possible. I don't have plans to implement this myself, but I'd be happy to merge a pull request that does so.

[vshashi01]

To be able specify triangle colors of a Mesh, a new base_materials resource should be introduced and referenced in the pid attribute in the Triangle element(s).

In the current version of this library, there is no proper support for defining base materials within the Resource.

The new refactoring proposed in #65 addresses this.

[sigmasoldi3r]

I've seen that the files I was using as a reference are non-standard (Bambu Labs 3mf to be precise). So my example really is not adequate. I've seen that to link colours in the standard way is, indeed, more complex than just assigning (apparently) random colour indices (Bambu Labs has no documentation for the matter).

So TL;DR don't take the snippet that I've posted as valid standard 3mf.