Looks like Fusion has a problem with lofting across cross sections correclty.
1 to 2 should be square to ring transition
2 to 3 should be ring to ring transition
but in image 1 you see that the space between 2 and 3 is reflecting the shape from 1.
In Rhino you see how I would expect this to work.
Claas Kuhnen
Faculty Industrial Design – Wayne State Universit
Chair Interior Design – Wayne State University
Owner studioKuhnen – product : interface : design
Interesting case! I will pass this on to our modeling folks for comment. You might try splitting it into two lofts (one from the square profile to the first circle, and a second from circle edge to the second circle). You will have to set the condition to "smooth" on the first circle. Worth a try.
Jeff Strater (Fusion development).
Claas Kuhnen
Faculty Industrial Design – Wayne State Universit
Chair Interior Design – Wayne State University
Owner studioKuhnen – product : interface : design
OK, thanks for checking. I've sent this off to our friendly modeling experts, let's see what they say.
Jeff
Claas Kuhnen
Faculty Industrial Design – Wayne State Universit
Chair Interior Design – Wayne State University
Owner studioKuhnen – product : interface : design
It turns out that the answer (to paraphrase a lot of stuff I don't understand), is that the loft will be influenced by all the profiles that are selected. Our modeler has settings for controlling this (called "tilt angle" and "tilt weight", in case you are interested). We currently expose these settings only at the start/end profiles of a loft (as "DirControl" under "Continuity" in the dialog). To really fix this, we would need to expose this for middle profiles, too. We'll put that on the list of improvements.
The workaround does work (two step loft), if you enable DirControl on the end of the first loft, and the beginning of the second loft.
Without DirControl:
two-stage loft with DirControl:
Loft 1:
Loft 2:
result:
Claas Kuhnen
Faculty Industrial Design – Wayne State Universit
Chair Interior Design – Wayne State University
Owner studioKuhnen – product : interface : design