NVil Forum

General Category => Bug Reports => Topic started by: steve on December 23, 2012, 06:59:07 pm

Title: Chamfer / Extrude
Post by: steve on December 23, 2012, 06:59:07 pm

Hello,

At one time, I thought the number of segments on a refined chamfer was limited to 20? Anyway, as it appears not to be now, there is a problem when adding more that 21 segments to a "Refined Rounded" Chamfer:-

Checked with a new config file.

With 21 segments, it is rounded:-
(http://i.imgur.com/1k3EH.jpg)

With 22 segments, the rounded becomes more of a corner:-
(http://i.imgur.com/H1GcZ.jpg)

Adding more segments makes the corner push out. This is with 30 segments:-
(http://i.imgur.com/AWaY1.jpg)

This may be related, so also posting a problem with extude.

Edge -> extrude -> Shoulder style -> Rounded.
When using that function, I expect the extrusion to be rounded, adding more segments to the rounded extrusion is actually removing the rounding off the edge:-

With 6 segments:-
(http://i.imgur.com/ffYsm.jpg)

With 20 segments:-
(http://i.imgur.com/B6ncO.jpg)

With 30 segments:-
(http://i.imgur.com/0DlGx.jpg)

Title: Re: Chamfer / Extrude
Post by: steve on March 10, 2013, 03:23:01 am

Sorry to resurrect an old thread, but the problem as not been looked at.

Here are some more examples of current problems:-

Creating "Chamfer-> Rounded" on a corner (3 edge intersection):-

Starts to distort of approx 10 segments:-
(http://i.imgur.com/QiOwCDG.png)

At 14 segments:-
(http://i.imgur.com/NKosIxc.png)

At 16 segments:-
(http://i.imgur.com/T0u5f6R.png)

At 19 segments, the rounded chamfer geometry disappears.

I also see a constant change in size of the radius as the segment number changes.

Title: Re: Chamfer / Extrude
Post by: IStonia on March 10, 2013, 03:42:03 am

This is the limitation of the algorithm being used. It is very hard to find a better way.

Title: Re: Chamfer / Extrude
Post by: steve on March 10, 2013, 07:21:44 am

OK, thanks.

I will find workaround when I need lots of segments.