/// <summary>
/// Editor only!!!
/// </summary>
public static void CreateGraphIfItNull(AstarPath path)
{
if (path == null)
{
Debug.LogWarning("AstarPath not found");
return;
}
if (path.astarData == null || path.astarData.gridGraph == null)
{
AstarPath.MenuScan();
}
}
/** Exports the INavmesh graph to a file */
public void ExportToFile(NavGraph target)
{
INavmesh graph = (INavmesh)target;
if (graph == null)
{
return;
}
Int3[] vertices = graph.vertices;
if (vertices == null || target.nodes == 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();
}
else
{
return;
}
}
vertices = graph.vertices;
if (vertices == null || target.nodes == null)
{
Debug.LogError("Graph still does not contain any nodes or vertices. Canceling");
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();
//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));
}
//Define single texture coordinate to zero
sb.Append("vt 0\n");
//Write triangles
for (int i = 0; i < target.nodes.Length; i++)
{
MeshNode node = target.nodes[i] as MeshNode;
if (node == null)
{
Debug.LogError("Node could not be casted to MeshNode. Node was null or no MeshNode");
return;
}
sb.Append(string.Format("f {0}/0 {1}/0 {2}/0\n", node.v1 + 1, node.v2 + 1, node.v3 + 1));
}
string obj = sb.ToString();
using (System.IO.StreamWriter sw = new System.IO.StreamWriter(path))
{
sw.Write(obj);
}
}
