SUFace / SUFaceIsComplex problems

tt_su · July 25, 2019, 3:02pm

Ok. If you can provide us with a model and example to to repro then that’d be great. You can log it in the issue tracker: https://github.com/SketchUp/api-issue-tracker

(I’m thinking we should set up a basic hello world project that is easy to clone and use as an example for stuff like this.)

tt_su · July 26, 2019, 9:41am

I just made a quick test, using the Live C API with SU2019.2 and the SU2019.2 SDK on Windows. Using your example file in your first post I’m seeing SUFaceIsComplex and the SUMeshHelperRef return expected results.

The CPP file itself:

github.com

thomthom/ruby-c-extension-examples/blob/2031c701fd6470a633bd6bc8c574236c959278da/Hello World/src/SUEX_HelloWorld.cpp#L77-L150


VALUE is_face_complex() {
  auto model = GetActiveModel();


  SUEntitiesRef root_entities = SU_INVALID;
  SU(SUModelGetEntities(model, &root_entities));


  size_t num_groups = 0;
  SU(SUEntitiesGetNumGroups(root_entities, &num_groups));
  if (num_groups == 0)
    return Qnil;


  SUGroupRef group = SU_INVALID;
  SU(SUEntitiesGetGroups(root_entities, 1, &group, &num_groups));


  SUEntitiesRef entities = SU_INVALID;
  SU(SUGroupGetEntities(group, &entities));


  size_t num_faces = 0;
  SU(SUEntitiesGetNumFaces(entities, &num_faces));

This file has been truncated. show original

It grabs the root group, then the face in that group and checks if it’s complex and then how many triangles it consists of.

tt_su · July 26, 2019, 9:42am

Not sure what you mean by that … ?

No the Live C API is read only. If you try to modify the model you’ll get unexpected behaviour, possibly cause a bad/invalid model, and quite likely run into crashes.

tt_su · July 26, 2019, 9:45am

Just to be clear, you are linking only to sketchup.lib, right? For Live C API you should not link against SketchUpAPI.lib.

We need to get better documentation up for how to setup a Live C API project, but for now refer to this post: