Route an orthogonal, obstacle-clear polyline between two border
anchors. Returns the full point list INCLUDING both anchor points
(collinear interior points removed), or null when no clear path
exists in the grid (callers fall back to their previous behavior).
Route an orthogonal, obstacle-clear polyline between two border anchors. Returns the full point list INCLUDING both anchor points (collinear interior points removed), or null when no clear path exists in the grid (callers fall back to their previous behavior).