public void SetGraph ( RecastGraph graph ) {
this.graph = graph;
if (graph == null)
return;
dirtyTiles = new bool[graph.tileXCount*graph.tileZCount];
anyDirtyTiles = false;
}
/** Exports the INavmesh graph to a .obj file */
public static 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")) {
AstarPathEditor.MenuScan ();
tiles = target.GetTiles();
if (tiles == null) return;
} else {
return;
}
}
string path = EditorUtility.SaveFilePanel ("Export .obj","","navmesh.obj","obj");
if (path == "") return;
//Generate .obj
var 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++) {
var 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 (var sw = new System.IO.StreamWriter(path))
{
sw.Write(obj);
}
}
