In FullControl GCode Designer, you describe print paths using a range of feature-types, similar to CAD for 3D modelling. Unlike CAD, you define all aspects of the printing process for every line in the print path… direction, speed, extrusion rate, acceleration, tool number, and anything else you want. This includes the parametric description of non-geometric GCode strings, if desired.
FullControl has iteratively evolved to make this design process achievable even for structures with thousands or millions of lines of GCode.