How to get the mesh information from Archicad

[Anonymous]

Hi,

I am a beginner for developing archicad 3D converter. My wonder is how to get the mesh information from Archicad. Besides, how about the transformation matrix? And how can I triangulate the polygons gotten from the body stucture?

I have a glimpse at the api document, but found little about what I metioned above. ; (

Could you please give me some hints?

[Ralph Wessel]

Yi wrote:
Thanks for your info. I have the same question here, wanting to get triangles from polygons with Archicad API. Just curious is there any ways to do the conversion easily? For example, anyone tried using Libtess2 for it?

Yes, you can use a 3rd-party library. Alternatively, first use ACAPI_3D_DecomposePgon to break faces into simpler convex polygons. It's very simple to produce a list of triangles from these faces.

[Anonymous]

Ralph wrote:

Yi wrote:
Thanks for your info. I have the same question here, wanting to get triangles from polygons with Archicad API. Just curious is there any ways to do the conversion easily? For example, anyone tried using Libtess2 for it?

Yes, you can use a 3rd-party library. Alternatively, first use ACAPI_3D_DecomposePgon to break faces into simpler convex polygons. It's very simple to produce a list of triangles from these faces.

Thank you!

[Ralph Wessel]

I should add that if you're using ModelerAPI (generally recommended) then call ModelerAPI::Polygon::GetConvexPolygon

[Anonymous]

Ralph wrote:
I should add that if you're using ModelerAPI (generally recommended) then call ModelerAPI::Polygon::GetConvexPolygon

Thanks for reply.