From the Ground Up
A European perspective on design and out of the box thinking with Civil 3D.
About Jack About OveLatest Post
- posted 10/25/07 by Jack Strongitharm Surface breaklines
- Apologies for disappearing for the last couple of weeks from here.
I see Ove has been throwing some great things up here anyway, you must try the contour tool and dont forget the automatic rebuild on your surface!!
Anyway, this week I am at the home of CIvil 3D in Manchester, NH meeting with all the developers etc.
Back home today, but I thought I would post you something to look at
When adding a breakline to a surface, you may have seen that around your radius corners you dont have much detail in the surface and also along large spaces in any straight lines you get very big triangles.

What we need is to add some extra detail to the surface without adding more points to the feature lines

This panel shows a 'mid-ordinate distance' - this is used to tessellate the polyline arcs from which the breakline is being created.
Selecting ‘Supplementing distance’, is used to add more triangles along straights in the breakline to create a smoother surface.
The result would be this

This can really improve your surfaces but without adding more points to your linework, which in turn can save you a lot of time in setting levels and gradients.
Jack
Just a little reminder I will be presenting at these two events next month, please come along if you can
AUGI event in Birmingham http://www.augidesignacademy.co.uk
and
AU 2007 at http://au.autodesk.com/2007

User Comments
Jack -
Is there anywere were we can change the default Mid-Ordinate Distance Value? I'ld like to change that setting, but I am unable to find a place to change it.
Posted 10/25/2007 8:15 AM by Matthew Anderson
Cannot find it myself. I dont think that is covered by the commands etc. Thanks for your comment!
Jack
Posted 10/29/2007 3:22 AM by Jack Strongitharm