How to build a mesh manually?

[lgdnpt]

I try to create a mesh manually, and saved the mesh, but it can't be display in the scene. I can only see the outline of the mesh which I create.

this my c# code:

        Mesh mesh = new Mesh();

        mesh.AddSurface("0");

        mesh.AddVertex(new vec3(0.0f, 0.0f, 0.0f), 0);
        mesh.AddVertex(new vec3(0.0f, 0.0f, 1.0f), 0);
        mesh.AddVertex(new vec3(0.0f, 1.0f, 0.0f), 0);
        mesh.AddVertex(new vec3(0.0f, 1.0f, 1.0f), 0);

        mesh.AddVertex(new vec3(-1.0f, 0.0f, 0.0f), 0);
        mesh.AddVertex(new vec3(-1.0f, 0.0f, 1.0f), 0);
        mesh.AddVertex(new vec3(-1.0f, 1.0f, 0.0f), 0);
        mesh.AddVertex(new vec3(-1.0f, 1.0f, 1.0f), 0);

        mesh.AddIndex(0, 0);
        mesh.AddIndex(1, 0);
        mesh.AddIndex(2, 0);

        mesh.AddIndex(3, 0);
        mesh.AddIndex(2, 0);
        mesh.AddIndex(1, 0);

        mesh.AddIndex(4, 0);
        mesh.AddIndex(5, 0);
        mesh.AddIndex(6, 0);

        mesh.AddIndex(7, 0);
        mesh.AddIndex(6, 0);
        mesh.AddIndex(5, 0);

        mesh.AddIndex(7, 0);
        mesh.AddIndex(3, 0);
        mesh.AddIndex(6, 0);

        mesh.AddIndex(2, 0);
        mesh.AddIndex(6, 0);
        mesh.AddIndex(3, 0);

        mesh.AddIndex(5, 0);
        mesh.AddIndex(1, 0);
        mesh.AddIndex(7, 0);

        mesh.AddIndex(3, 0);
        mesh.AddIndex(7, 0);
        mesh.AddIndex(1, 0);

        mesh.AddIndex(0, 0);
        mesh.AddIndex(1, 0);
        mesh.AddIndex(4, 0);

        mesh.AddIndex(5, 0);
        mesh.AddIndex(4, 0);
        mesh.AddIndex(1, 0);

        mesh.AddIndex(4, 0);
        mesh.AddIndex(6, 0);
        mesh.AddIndex(0, 0);

        mesh.AddIndex(2, 0);
        mesh.AddIndex(0, 0);
        mesh.AddIndex(6, 0);

        mesh.CreateNormals(0);

        mesh.CreateTangents();

        ObjectMeshStatic om = new ObjectMeshStatic(mesh);
        om.WorldPosition = new vec3(0, 0, 1);
        om.SetMaterial(mat, 0);
        om.SaveMesh("test.mesh");
        mesh.Clear();

It's so strange that I can see it in the editor preview panel, but in the scene I can't see it except the outline.

please point out of the mistake of my code, thanks!

 

[silent]

lgdnpt

Please make sure that you also called createBounds() for mesh, here is the minimal C# example: https://developer.unigine.com/en/docs/latest/code/usage/mesh_class/index?rlang=cs#add_new_surface

[lgdnpt]

1 hour ago, silent said:

lgdnpt

Please make sure that you also called createBounds() for mesh, here is the minimal C# example: https://developer.unigine.com/en/docs/latest/code/usage/mesh_class/index?rlang=cs#add_new_surface

thank you!

[leon.dong]

@silent is that possible to have a algorithm to generate the data for AddIndex method instead of manually write many lines.

 

[werner.poetzelberger]

Iam not a programmer so anyone correct me ;).

But wouldnt you do that in some sort of loop and write it into an Array or so ;)

Best. WErner