Merge trimmed surface

Rhino Rhino for Windows
13

How is this solution?
coquepart1_DC2.3dm (143.6 KB)

Steps:

  1. DupBorder both original trimmed surfaces. These curves will be used for trimming the final, merged surface.

  2. UnTrim the orginal trimmed surfaces

  3. Split the untrimmed surfaces using isocurves as the splitting objects. I used Split with Shrink=No. Discard a) Split each untrimmed surface at the isocurve corresponding to adjacent edges of the trimmed surfaces. Use a snap to the border curves from step 1 to accurately locate these isocurves. Discard the unneeded parts of each surface.
    b) Split the surfaces with isocurves by snapping to the corresponding corner of the other surface. Discard the unneeded parts of each surface.

  4. ShrinkTrimmedSrfToEdge the surfaces.

Results of operations above are in Surfaces 2 layer.

  1. MergeSrf the surfaces. In theory because the two surfaces are sections of conics they will not be G2 (curvature) continuous. I used Smooth=No and Roundness=0 options. Result is in Merged Surface layer.

  2. Trim the surface using the boundary curves from Step 1.

  3. If desired ShrinkTrimmedSrfToEdge the trimmed surfaces. Result is in Trimmed Surface.

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