Matching an initial curve and a target surface boundary3

This is the final result you will get when accomplishing this task:

Load file "GM_EX_03.e3" and start the Advanced GSM command. Now proceed as in previous examples "Matching an initial and a target curve, preserving another one" and "Matching two initial and two target curves, preserving another one".

The main difference is the target curve is a surface boundary, so that we can apply also tangency and curvature continuity constraints. So, while you still preserve the green boundary curve.

1. So you have:
   • What to Modify: the black surface
   • What to Preserve: the position of the common boundary with the green surface
   • What to Match: the boundary curve on the right (initial) with the left boundary curve of the red surface above (target).
   
   
   
   The result you get is the following:
   
   
    
2. Now, set the preserving conditions so that Position and Tangency will be preserved:
   
   
   
   
3. If you now compare the results, you will see the difference is outstanding:

   Position	Position + tangent

   
    
4. Now, try to apply the Target position + target tangent conastraints to the matching boundaries:
   
   
   
   and compare the results:
    

   Target position	Target position + target tangent

   
     Also in this case, the difference is outstanding.