Editing Curves, Fictive Edges and Fillets

You can edit curves on support, fictive edges, or fillets. The last action can be undone.

Main edition actions are

  • Add new points at the end, or insert a point between existing ones.
  • Move or delete existing points.
  • Adjust the tangent of an existing point.
  • Set point/tangent constraints at extremities.
  • Adjust the mathematical definition.
  • Use analysis tools.
  • Switch the mode Constant/Variable and adjust the distance for fillet and fictive edge.
  • Extend at any extremity.

This task shows you how to:

See Also
Creating Curves on Support
Creating Fillets Bounding Curves
Ensuring Curve Quality

Select Curves

You can take advantage of the implicit selection of curves.

Note: Outside Curves Network Preparation, double-click a feature to edit it.

Move the pointer near a curve.

Tips:
  • Preselection applies to visible curves.
  • A small red circle indicates a pre-selected user pick point on the curve.
  • A small red dot indicates a preselected point on the curve.
  • OK/Cancel are visible near the last point of the edited curve. If you cannot see them because of the focus, right-click a location to display them at this location.
  • Depending on the context, implicit selection may apply to several curves.
  • Depending on the context, curves other than "on support" may not be detected.
  • To select a neighbor curve, move the pointer away from the current curve (until it is de-selected), then near the curve to select.
  • Edition applies to the current curve (The one under the mouse). However, when you need to interact with another curve, the focus on the current curve (thus the edition) may be lost. To avoid this, right-click anywhere on the current curve, and select the lock.

The curve is detected, selected, and highlighted. The current action applies to it.

Edit Curves

You can edit curves on support.

Notes:
  • Curves of other types (3D Curves, Curve on Mesh...) are not editable with Curves Network Preparation. They are displayed in a softer color.
  • A point constrained on another curve cannot be moved outside of its support curve: Click the constraint callout to free the point.
  • You can snap the extremity of a current curve (but not an intermediate point) to a fictive edge. However, the tangent of the corresponding point is not editable.
  • Edition is restricted for connecting curves. For more information, see Creating Connecting Curves.

  1. From the Wireframe section of the action bar, click Curves Network Preparation and select a Mesh.
  2. From the context toolbar, select Curve Edition .
    Select a curve as explained above.
  3. Drag existing points as required to move them.
  4. Drag a user point to any location on another curve.
    • The point is constrained on that location.
    • The continuity is automatically computed.
    • A callout is attached to the point. Click the Lock in the callout to release the constraint at the point.
  5. Click the callout to modify the continuity condition.

    The callout switches between Point and Tangent.

  6. Drag a tangency handle to modify its angle or tangent length.
  7. Right-click a user point and select from the context toolbar.
    The point is deleted.
  8. Pick a location to insert a new user point in the curve.
    The point has not continuity, hence no callout.
  9. Extend the curve at any extremity.

    For more information, see Extend or Extrapolate.

    1. Right-click to display the context toolbar.

Edit a Fillet

You can edit fillet curves.

The curve smoothness toolbar lets you assess the quality of the curve in real time.

Notes:
  • Only the median line is editable.
  • The bounding and connecting curves are not modified directly but updated from the median line or offset modifications
  • Fillets are deleted from the tree.
    Tip: When working in the 3D area, right-click the fillet and select Center Tree on Work Object. You can now delete it from the tree.

  1. From the context toolbar, select Curve Edition
  2. Select the fillet median line as explained above.
  3. Edit the offset value or change the offset mode Constant/variable.
  4. Edit the median line as any curve on support.
  5. Extend the curve at any extremity.

    For more information, see Extend or Extrapolate.

    1. Right-click to display the context toolbar.

Edit a Fictive Edge

You can edit fictive edges.

Notes:
  • The curve smoothness toolbar assesses the quality of curve in real time.
  • Only the guiding curve is editable.
  • The fictive edge, the left and right borders are not modified directly but updated from the guiding curve or influence area modifications.

  1. From the context toolbar, select Curve Edition
  2. Select the guiding curve as explained above.
  3. Edit the influence area distance or change the offset mode Constant/Variable, Symmetric/Asymmetric.
  4. Edit the guiding curve as any curve on support.
  5. Extend the fictive edge at any extremity.

    For more information, see Extend or Extrapolate.

    1. Right-click to display the context toolbar.