Now I see the difference! I was mistaken by the fact that the command you had in mind is actually called “Insert SubD edge loop” in Rhino 7. The “EDGE LOOP” part was what took my attention, and it does what the edge loop in 3ds max does. Its icon is also showing a loop.
However, there is no proper “Connect edges” command in SubD. Let me explain again. There must be a tool that lets you select two or more SubD edges and build one or more connecting edges in-between. The Command line should allow the following options (marked with yellow are the input edges, marked with white are the output edges):
Number of segments (the default value must be 1). Here is an example with a value of 2:
“Proportional” or “From end” (switches between 2 different modes; default must be Proportional"):
a) Proportional (the output edges are evenly distributed along the input edges).
b) “From end”.
“Flip direction” (changes the starting distance from one end to the opposite end, if the “From end” option is active; it’s recommended to show a tiny arrow to give a visual feedback similar to the
! _Dir command):
Local/Global (determines whether the distribution is local /even distance between the output edges everywhere/ or global /even distance between the middle of the output curves but variable along the length of the input edges/):
a) Local (example with 5 mm distance with local distribution, and “From end” starting from the top).
b) Global (example with 5 mm distance with global distribution, and “From end” starting from the top).
- Distance from end in units (command prompt “Select point or give amount”). Just like the two examples above. Must be possible to be modified at any time during the operation.
You can check this video after the 2nd minute mark to see how it’s done in 3ds max. However, my proposal is a bit different, because in my opinion it gives a better numerical control over the position of the new segments, unlike 3ds max which is purely based on visual placement of the segments with no proper way to set exact distance between the segments: