Generate parallel contour offset toolpaths from an input (closed) path.

$ nc_contour_pocket --help
nc_contour_pocket:
  -h [ --help ]                         display this help and exit
  -r [ --tool_r ] arg                   Tool radius
  -s [ --stepover ] arg (=0.90000000000000002)
                                        Tool stepover 0.0 - 1.0

base options:
  --config arg                          Configuration file
  --machine arg                         Machine configuration


$ nc_backplot < profile.ngc
G02 X-8 Y8 J8 F500
G01 X-8 Y92
G02 X0 Y100 I8
G01 X184 Y100 F500
G02 X192 Y92 J-8
G01 X192 Y8
G02 X184 Y0 I-8
G01 X0 Y0

backplot image

$ nc_contour_pocket -r 4 < profile.ngc | nc_backplot
...

backplot image