/** Creates a mesh of the surfaces of the navmesh for use in OnDrawGizmos in the editor */
public static void CreateNavmeshSurfaceVisualization(this NavmeshBase navmeshBase, NavmeshTile tile, GraphGizmoHelper helper)
{
// Vertex array might be a bit larger than necessary, but that's ok
var vertices = PF.ArrayPool <Vector3> .Claim(tile.nodes.Length *3);
var colors = PF.ArrayPool <Color> .Claim(tile.nodes.Length *3);
for (int j = 0; j < tile.nodes.Length; j++)
{
var node = tile.nodes[j];
Int3 v0, v1, v2;
node.GetVertices(out v0, out v1, out v2);
vertices[j * 3 + 0] = (Vector3)v0;
vertices[j * 3 + 1] = (Vector3)v1;
vertices[j * 3 + 2] = (Vector3)v2;
var color = helper.NodeColor(node);
colors[j * 3 + 0] = colors[j * 3 + 1] = colors[j * 3 + 2] = color;
}
if (navmeshBase.showMeshSurface)
{
helper.DrawTriangles(vertices, colors, tile.nodes.Length);
}
if (navmeshBase.showMeshOutline)
{
helper.DrawWireTriangles(vertices, colors, tile.nodes.Length);
}
// Return lists to the pool
PF.ArrayPool <Vector3> .Release(ref vertices);
PF.ArrayPool <Color> .Release(ref colors);
}
/** Creates an outline of the navmesh for use in OnDrawGizmos in the editor */
public static void CreateNavmeshOutlineVisualization(NavmeshTile tile, GraphGizmoHelper helper)
{
var sharedEdges = new bool[3];
for (int j = 0; j < tile.nodes.Length; j++)
{
sharedEdges[0] = sharedEdges[1] = sharedEdges[2] = false;
var node = tile.nodes[j];
for (int c = 0; c < node.connections.Length; c++)
{
var other = node.connections[c].node as TriangleMeshNode;
// Loop through neighbours to figure out which edges are shared
if (other != null && other.GraphIndex == node.GraphIndex)
{
for (int v = 0; v < 3; v++)
{
for (int v2 = 0; v2 < 3; v2++)
{
if (node.GetVertexIndex(v) == other.GetVertexIndex((v2 + 1) % 3) && node.GetVertexIndex((v + 1) % 3) == other.GetVertexIndex(v2))
{
// Found a shared edge with the other node
sharedEdges[v] = true;
v = 3;
break;
}
}
}
}
}
var color = helper.NodeColor(node);
for (int v = 0; v < 3; v++)
{
if (!sharedEdges[v])
{
helper.builder.DrawLine((Vector3)node.GetVertex(v), (Vector3)node.GetVertex((v + 1) % 3), color);
}
}
}
}