AppExperiments

using UnityEngine;
using System.IO;
using System;

#if UNITY_EDITOR
using UnityEditor;
#endif

namespace Leap.Unity.MeshGen {

  public class MeshGeneratorAsset : ScriptableObject {

    [SerializeField]
    private MeshGenerator _meshGenerator = default;

    /// <summary>
    /// The name given to the Mesh object this generator handles. This name is reassigned
    /// every OnValidate.
    /// </summary>
    public string generatedMeshName = "Generated Mesh";

    [SerializeField]
    private Mesh _mesh;
    /// <summary>
    /// The mesh object this asset uses its generator to modify.
    /// </summary>
    public Mesh mesh { get { return _mesh; } }

    public void OnValidate() {
      if (_mesh != null && _meshGenerator != null) {
        _mesh.name = generatedMeshName;
      }
    }

    /// <summary>
    /// Refreshes the mesh generated by this mesh generator asset.
    /// </summary>
    public void RefreshMesh() {
      if (_meshGenerator == null) {
        _mesh.Clear();
      }
      else {
        _meshGenerator.Generate(_mesh);
      }
    }

    #region Mesh Generator Asset Creation

#if UNITY_EDITOR
    public const string DEFAULT_ASSET_NAME = "Mesh Generator";
    public const string DEFAULT_MESH_NAME  = "Generated Mesh";

    [MenuItem("Assets/Create/Mesh Generator", priority = 306)]
    private static void createNewMeshGeneratorAsset(MenuCommand command) {
      string path = "Assets";

      foreach (UnityEngine.Object obj in Selection.GetFiltered(typeof(UnityEngine.Object),
                                                               SelectionMode.Assets)) {
        path = AssetDatabase.GetAssetPath(obj);
        if (!string.IsNullOrEmpty(path) && File.Exists(path)) {
          path = Path.GetDirectoryName(path);
          break;
        }

        path = Path.Combine(path, DEFAULT_ASSET_NAME + ".asset");
        path = AssetDatabase.GenerateUniqueAssetPath(path);

        MeshGeneratorAsset asset = CreateInstance<MeshGeneratorAsset>();
        asset.name = DEFAULT_ASSET_NAME;
        AssetDatabase.CreateAsset(asset, path);

        Mesh mesh = new Mesh();
        mesh.name = DEFAULT_MESH_NAME;
        asset._mesh = mesh;
        AssetDatabase.AddObjectToAsset(mesh, asset);

        AssetDatabase.SaveAssets();

        Selection.activeObject = asset;
      }
    }
#endif

    #endregion

  }

}