About continunity in flow along surface command

Hi all, i would like to ask how to fix the highlighted edge to G1 continunity as the flow along surface does not match well the edge of repeated pattern. I hope this will be improved in the future. Thanks.

 

Here is the link of the file (9.1MB): http://www.sendspace.com/file/16lhqh



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Permalink Reply by Scott Davidson on October 19, 2011 at 10:22am

I remade this.  See if it looks better.  There are a few tricks I used:

  1. On the very edge of the flow surface there can be mathematical noise.  I used a different segment of the surface so that the flow object was away from the critical flow surface edges.
  2. In Units, I turned up the absolute tolerance of the file.
  3. When flowing using a Circle, I create the circle using the deformable option. This creates a circle that is actually a degree 3 curve that is non-rational.  This will tend to work better then true circle curve.  You can also get this result by rebuilding the circle curve before flowing.
  4. Go to Tools pulldown > Options > Mesh.  Make sure mesh setting are tight to see results well.

I think this is looking good.  What do you think? 

 

http://download.mcneel.com/s3/mcneel/rhino/4.0/misc/Q4_1 v4.3dm

Permalink Reply by Pascal Golay on October 19, 2011 at 11:30am

Hi Vincent- I would flow only one repeat of the pattern  that is in the middle of the beginning planar version, then, once that is flowed to the cylinder, make a rotated copy, 180 degrees, to fill the cylinder rather than have the seam on the cylinder to deal with. 

In the attached image, I just flowed the red part of the pattern, and then made the rotated copy (blue)

 

-Pascal

pascal@mcneel.com

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