2) Open sketch file
1) Welcome screen
2) Open sketch file
3) Annotate curvature lines
4) Compute BendField. We also allow users to compute fields usign a harmonic energy
5) Wait for the BendFields algorithm to finish (you can check progress from the terminal)
6) Once is finished, crosses will be aligned with curvature directions
7) You can visualize curvature lines by switching on the hatching mode
8) Adjust the number of lines using the vertical slider
9) If desired, export the BendField in a file
10) Exported BendFields can be reopened usign the load function
