class_docstr: Take a point within a pixel and use the tl, or tl to pixel center.
class_docstr_tok: ["Take","a","point","within","a","pixel","and","use","the","tl",",","or","tl","to","pixel","center","."]
code: def back_pt(self, pt):
      return pt.floor() + 0.5
  
imports: import numbers
  from pysc2.lib import point
label_desc: Use image node_id 4 for calling the PixelToCoord obj's underlying member method code with example usage: obj.back_pt(pt) and returns: unknown