FlatBuffers - Error when creating Vector of struct

Question

I am very new to flatbuffers and believe I am following the tutorial correctly but modifying it to my needs, but cannot for the life of me work out why i'm getting this error:

 error: could not convert ‘_Positions’ from ‘flatbuffers::Offset<flatbuffers::Vector<Renderer::Import::Vec3> >’ to ‘flatbuffers::Offset<flatbuffers::Vector<const Renderer::Import::Vec3*> >’
                                        _Materials, _Faces);

in addition, I've just noticed it's also throwing error: static assertion failed: T must be a scalar type thrice

Flatbuffers Schema:

namespace Renderer.Import;
struct Vec3 {
...
}


struct Face {
...
}
struct Material{
...
}

table Mesh{
  Name:string;
  Positions:[Vec3];
  Normals:[Vec3];
  Materials:[Material];
  Faces:[Face];
}

C++ Code:

  flatbuffers::FlatBufferBuilder builder(4096);

  std::vector<Renderer::Import::Vec3> Normals;
  // Populate

  std::vector<Renderer::Import::Vec3> Positions;
  // Populate

  std::vector<Renderer::Import::Material> Materials;
  // Populate

 std::vector<Renderer::Import::Face> Faces;
 // Populate

    auto _Name = builder.CreateString(shapes[0].name);
    auto _Normals = builder.CreateVector(Normals);
    auto _Positions = builder.CreateVector(Positions);
    auto _Materials = builder.CreateVector(Materials);
    auto _Faces = builder.CreateVector(Faces);
    // Errors with `_Position` argument, but maybe the other three are incorrect too
    auto mesh = Renderer::Import::CreateMesh(builder, _Name, _Positions, _Normals, _Materials, _Faces);

Any help on this issue would be greatly appreciated

Answer 1

Use CreateVectorOfStructs instead of CreateVector when used with structs.

The API is to blame for accepting a vector of structs with CreateVector, we'll have to fix that.