/** Exports the INavmesh graph to a file */ public void ExportToFile(RecastGraph target) { //INavmesh graph = (INavmesh)target; if (target == null) { return; } RecastGraph.NavmeshTile[] tiles = target.GetTiles(); if (tiles == null) { if (EditorUtility.DisplayDialog("Scan graph before exporting?", "The graph does not contain any mesh data. Do you want to scan it?", "Ok", "Cancel")) { AstarPath.MenuScan(); tiles = target.GetTiles(); if (tiles == null) { return; } } else { return; } } string path = EditorUtility.SaveFilePanel("Export .obj", "", "navmesh.obj", "obj"); if (path == "") { return; } //Generate .obj System.Text.StringBuilder sb = new System.Text.StringBuilder(); string name = System.IO.Path.GetFileNameWithoutExtension(path); sb.Append("g ").Append(name).AppendLine(); //Vertices start from 1 int vCount = 1; //Define single texture coordinate to zero sb.Append("vt 0 0\n"); for (int t = 0; t < tiles.Length; t++) { RecastGraph.NavmeshTile tile = tiles[t]; if (tile == null) { continue; } Int3[] vertices = tile.verts; //Write vertices for (int i = 0; i < vertices.Length; i++) { Vector3 v = (Vector3)vertices[i]; sb.Append(string.Format("v {0} {1} {2}\n", -v.x, v.y, v.z)); } //Write triangles TriangleMeshNode[] nodes = tile.nodes; for (int i = 0; i < nodes.Length; i++) { TriangleMeshNode node = nodes[i]; if (node == null) { Debug.LogError("Node was null or no TriangleMeshNode. Critical error. Graph type " + target.GetType().Name); return; } if (node.GetVertexArrayIndex(0) < 0 || node.GetVertexArrayIndex(0) >= vertices.Length) { throw new System.Exception("ERR"); } sb.Append(string.Format("f {0}/1 {1}/1 {2}/1\n", (node.GetVertexArrayIndex(0) + vCount), (node.GetVertexArrayIndex(1) + vCount), (node.GetVertexArrayIndex(2) + vCount))); } vCount += vertices.Length; } string obj = sb.ToString(); using (System.IO.StreamWriter sw = new System.IO.StreamWriter(path)) { sw.Write(obj); } }