safety check to avoid footprints without at least 3 points
safety check to avoid footprints without at least 3 points

markraz/vtp,nakijun/vtp,markraz/vtp,markraz/vtp,seanisom/vtp,nakijun/vtp,seanisom/vtp,markraz/vtp,nakijun/vtp,seanisom/vtp,nakijun/vtp,markraz/vtp,nakijun/vtp,seanisom/vtp,seanisom/vtp