Adding Controls to Splines
To
add tangency control:
In the
Edit Sketch mode, select a spline.
Click Add Tangency Control 
(Spline
Tools toolbar) or Tools, Spline Tools, Add
Tangency Control to display a new handle.
Drag to
place the handle. Click to
position the handle. Use the
handles to control
tangency. |
 |
Click
OK 
.
To add curvature control:
In the Edit Sketch
mode, select a spline.
Click Add Curvature
Control 
(Spline Tools toolbar) or Tools,
Spline Tools, Add
Curvature Control to display a new curvature control pointer.
Drag to
position the handle. |
|
|
 When you drag the curvature
control pointer and it shifts sides, it indicates that you crossed an
inflection point. To display inflection points, right-click and select
Show Inflection Points  .
|
|
Click to
position the handle. |
|
Select
the ball of the curvature control pointer and drag in either direction
along the vector handle to adjust the radius of curvature. |
|
Click
OK .
To insert spline points:
Select a spline.
Click Insert
Spline Point 
(Spline Tools toolbar) or Tools,
Spline Tools, Insert
Spline Point.
|
The pointer changes to  .
Click to
position the spline point  .
The spline point adds a spline handle.
Insert
additional spline points. |
|
Click
OK .