Tangent and normal graphic handles

1. To enable the tangent and normal graphic handles:
2. Select a point on the curve.
3. Right-click the point and select Tangent and normal graphic handles from the context menu.
4. Click and drag the handles to edit the curve:
   • Use the arrow handles tangent to the curve to move the point, in a fixed direction, along the tangent.

     

   • Use the arrow handles normal to the curve to move the point, in a fixed direction, along the normal.

     

   • Use the planar handles to move the point across a 2D plane.

     

   • Use the centre handle to move the point freely.

     

Note: Moving the cursor over a handle highlights the handle, indicating that you can move it.