Controlling the shape

An example by Tom Hasenauer of EDAG

Download dataset here.

Difficulties with controlling the shape

• The faces are supposed to match the curves
• But they are too organic

Strategy I

• There are areas with low and with high curvature
• If built in NURBS they would be primary surfaces and fillets

  

• When building the faces place an edge at the transitions from low to high curvature

  

• Place additional edges in the middle of the low curvature areas

  

Steps

1. Create polygon face.
   
2. Uncrease.
   
3. Adjust the points to match.
   
4. Extrude outer edge inwards.
   
5. Delete outer polygon.
   

Strategy II

• If the radii are smaller we need additional edges to have enough control.
  

Steps

1. Create polygon face with additional points.
   
2. Adjust to match the shape.
   

Final result