NavMesh created at runtime not recognized by agents or NavRaycast

[cmd_Unity]

Hi,

I using meshes gathered from an AR-Device to create a navmesh at runtime.
I can clearly see the navmesh in the scene at runtime, but neither my navAgents nor a NavRaycast recognize this navmesh.
Left picture at runtime where the navmesh is not created => the vertical raycast going through the agent is green = no navhit
Right picture at runtime when the navmesh is created => same, navraycast still green = no navhit (should be blue when navraycast hit navmesh)
And yes, my agent is aligned properly over the mesh

I am using UInity 2020.3.22f1, here are the relevant code snippets:

first nav-mesh creation:

//param: parent = GameObject contiaing multiple GameObjects with Meshes
public static void CreateNavMesh(GameObject Parent)
{
   List<NavMeshBuildSource> sources = new List<NavMeshBuildSource>();

   MeshCollider[] mcs = Parent.GetComponentsInChildren<MeshCollider>();
   if (mcs == null)
   {
      Debug.LogError("CreateNavMesh: could not find any meshes");
   }
   else
   {
      foreach (MeshCollider meshcollider in mcs)
      {
         sources.Add(CreateNavMesh_MeshBuildSource(meshcollider));
      }
      navMeshBuildSettings.agentRadius = 0.05f;
      navMeshBuildSettings.agentHeight = 0.1f;
      navMeshBuildSettings.agentSlope = 60.0f;
      navMeshBuildSettings.agentClimb = 0.1f;
      navMeshBuildSettings.voxelSize = navMeshBuildSettings.agentRadius / 5f;
      navMeshBuildSettings.minRegionArea = 0.01f;
      NavMesh.RemoveAllNavMeshData();
      NavMeshBuilder.UpdateNavMeshData(navMeshData, navMeshBuildSettings, sources, CalculateLocalBounds_groupedObject(Parent));
      NavMesh.AddNavMeshData(navMeshData);
      UnityEditor.AI.NavMeshBuilder.BuildNavMesh();  //this was only for test, its not neccessary for navmeshcreation
    }
}
    
private static NavMeshBuildSource CreateNavMesh_MeshBuildSource(MeshCollider meshcollider)
{
   var src = new NavMeshBuildSource();
   src.transform = meshcollider.gameObject.transform.localToWorldMatrix;
   src.shape = NavMeshBuildSourceShape.Mesh;
   src.sourceObject = meshcollider.sharedMesh;
   return src;
}

second the navagents update, doing navmeshraycasts

[SIZE=4]void Update ()
{
    navOnMesh = nav.isOnNavMesh;

    if (navOnMesh == true)
        CmdMove();

    else if (navOnMesh == false)
    {
        NavMeshHit hit;
        Vector3 from = transform.position + new Vector3(0f,100f,0f);
        Vector3 to = transform.position - new Vector3(0f, 100f, 0f);
        bool blocked = NavMesh.Raycast(from , to, out hit, NavMesh.AllAreas);
        if(hit.distance == Mathf.Infinity)
           Debug.DrawLine(transform.position + new Vector3(0f, 100f, 0f), transform.position - new Vector3(0f, 100f, 0f), blocked ? Color.red : Color.green);
        else
           Debug.DrawLine(transform.position + new Vector3(0f, 100f, 0f), hit.position, blocked ? Color.red : Color.blue);


    }
}[/SIZE]

Has anyone an idea how to teach my agent or navmeshraycast to use my created navMesh?

Thank you in advance,
Martin

[cmd_Unity]

Ok found the solution:

First:
I missunderstood NavMeshRayCast which is not intended the way I did used it. I am using now
NavMesh.SamplePosition() instead.
=> now the Raycast turns blue = samplePosition “hit” NavMesh

Second:
I did not recognize that the “availabiltiy” of a NavMesh for Agents depend on the AgentTypeID used to create the NavMesh. So now I added in Line 18 ( where I do define NavMeshBUildSettings):

navMeshBuildSettings.agentTypeID = -1325456; // the weird AgentTypeID of my Agent

=> now the NavAgent recognizes the NavMesh and walking on it.

Hope it helps others too!