![[ChimeraX Issue Tracking System]](/trac/ChimeraX/chrome/site/ChimeraX-icon.svg){kind=icon}
Opened 9 years ago
Closed 9 years ago
#392 closed defect (fixed)
"round" ribbon (cartoon) normals may be wrong
| Reported by: | Elaine Meng | Owned by: | Conrad Huang |
|---|---|---|---|
| Priority: | major | Milestone: | |
| Component: | Depiction | Version: | |
| Keywords: | Cc: | ||
| Blocked By: | Blocking: | ||
| Notify when closed: | Platform: | all | |
| Project: | ChimeraX |
Description
Maybe there's a bug making the ribbons look too fat and bulgy, see attached image showing a comparison between Chimera and ChimeraX ribbons with same width and thickness. I suspected the normals because we had the same problem in Chimera for years. Tom Goddard said: in Chimera 1 the issue was that the ellipse ribbon cross-section was using normal vectors that were appropriate for a circle — the ribbon thickness scaling wasn’t adjusting the normal vectors.
Attachments (1)
Change History (2)
by , 9 years ago
| Attachment: | screenshot-compare-ribbons.png added |
|---|
comment:1 by , 9 years ago
| Resolution: | → fixed |
|---|---|
| Status: | new → closed |
Note:
See TracTickets
for help on using tickets.
There was indeed a bug, and is fixed in 17a02c6.
When an oval cross section is created by scaling, the coordinates were properly scaled but the normals were not. Once scaled, the ribbons look a lot skinnier.