Coupling Tab

The Coupling tab is only available with the 2nd Curve option on the Moving Frame tab. It is used to influence the moving frame in order to obtain an optimal result independent from the structure of the original geometry.

Coupling

• Cleared: If edge 1 and 2 have the same number of segments, the segmentation is decisive for the blend surface calculation, i. e. the segment boundaries will be taken from the original geometry.

  If the segmentation is unequal, the total arc length of the edges will be used for the segmentation calculation.

• Selected: The segmentation is calculated according to the arc length. The arc lengths of edge 1 and 2 are determined and on edge 2, the segment boundaries are inserted at the points whose distance value from the start and end points of edge 2 have the same ratio to the total arc length as on edge 1.
  • No coupling is defined: The total arc length will be used for segmentation calculation.
  • One or several couplings are defined: The arc lengths of the sections defined by the coupling vertices will be used for segmentation calculation.
    Note: The coupling vertices can be selected arbitrarily. However, they should lie on the edges of the original geometry and be selected in succession of their positions.

Force G1 in edge direction

• Cleared: The continuity of the selected supports and the coupling conditions imposed by the user is inherited for the result surface.
• Selected: The surface blend attempts to override and remove any internal G1 patch discontinuities.

Display

Displays the defined couplings as lines.

Coupling table

X

Deletes a defined coupling.

Coupling

Displays the defined couplings.

Edge 1/2

Displays the selected coupling vertices on edge 1 and 2. The selection can be changed after clicking onto a coupling vertex in the table.

Coupling Vertex

For the current coupling can be either selected existing points as coupling vertex or new points created via the contextual command.