private void creaUnItem(string fileMesh, Vector3 posicion, float rotacion)
        {
            var     sceneCura = loader.loadSceneFromFile(fileMesh);
            TgcMesh meshCura  = sceneCura.Meshes[0];

            meshCura.AutoTransformEnable   = true;
            meshCura.AutoUpdateBoundingBox = true;
            meshCura.createBoundingBox();
            meshCura.Position = posicion;
            meshCura.rotateX(rotacion);
            meshCura.Scale = new Vector3(0.5f, 0.5f, 0.5f);
            meshCura.move(0, 20, 0);
            //cura.BoundingBox.transform(Matrix.Scaling(new Vector3(0.1f, 3, 0.1f)) * Matrix.Translation(new Vector3(posteDeLuz.Position.X + 33, posteDeLuz.Position.Y, posteDeLuz.Position.Z)));

            /*Item cura = new Item(this.env.MediaDir, this.env.ShadersDir);
             * cura.setMesh(meshCura);
             * cura.setFileNameSound(MediaDir + "MySounds\\PickUp2.wav");*/

            items.Add(meshCura);
        }