I'm pretty much completely baffled about what the 'degree' setting on NURBS curves actually does. Here's what teh VW help guide says:
Quote
The curve degree affects the number of vertices created; the higher the degree value, the greater the number of vertices.
Here's what happens when I try various things:
(when I write "created with" I mean the number I put in the "curve degree" box of the NURBS tool settings)
Each of those shapes is created by clicking on the same 4 points in the same sequence.
Here are some questions for starters:
"Interpolation mode"
1) Contrary to what VW help says, changing the 'degree' in the NURBS tool settings doesn't affect the number of vertices. It does seem to result in a slightly different shape though. So what does it do?
2) If I change the 'degree' number in the OIP, what exactly determines the number of vertices I end up with?
3) If I change the 'degree' number in the OIP, why does a line with degree 3 end up with *more* vertices than a line with degree 4?
4) Is it intended behaviour that changing the 'degree' number in the OIP flips an "interpolation mode" NURBS into being a "control point mode" NURBS?
"Control point mode"
5) Why does the OIP tell me the NURBS has a different degree from the one I created it with?
6) Why does a created-as degree 3 or 4 NURBS have fewer vertices than a created-as degree 2 NURBS?
7) Why does on 'degree 4' NURBS have a different number of vertices compared to another 'degree 4' NURBS (and same applies to the two degree 5 NURBS)?
8 ) Why does one of the degree 5 NURBS have fewer vertices than one of the degree 4 NURBS?
Final question: is it user error, bugs in the software, or bad documentation that's causing the confusion here?
You can post now and register later.
If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.
Question
line-weight
I'm pretty much completely baffled about what the 'degree' setting on NURBS curves actually does. Here's what teh VW help guide says:
Here's what happens when I try various things:
(when I write "created with" I mean the number I put in the "curve degree" box of the NURBS tool settings)
Each of those shapes is created by clicking on the same 4 points in the same sequence.
Here are some questions for starters:
"Interpolation mode"
1) Contrary to what VW help says, changing the 'degree' in the NURBS tool settings doesn't affect the number of vertices. It does seem to result in a slightly different shape though. So what does it do?
2) If I change the 'degree' number in the OIP, what exactly determines the number of vertices I end up with?
3) If I change the 'degree' number in the OIP, why does a line with degree 3 end up with *more* vertices than a line with degree 4?
4) Is it intended behaviour that changing the 'degree' number in the OIP flips an "interpolation mode" NURBS into being a "control point mode" NURBS?
"Control point mode"
5) Why does the OIP tell me the NURBS has a different degree from the one I created it with?
6) Why does a created-as degree 3 or 4 NURBS have fewer vertices than a created-as degree 2 NURBS?
7) Why does on 'degree 4' NURBS have a different number of vertices compared to another 'degree 4' NURBS (and same applies to the two degree 5 NURBS)?
8 ) Why does one of the degree 5 NURBS have fewer vertices than one of the degree 4 NURBS?
Final question: is it user error, bugs in the software, or bad documentation that's causing the confusion here?
(I've attached the file below)
NURBS.vwx
Link to comment
5 answers to this question
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.