Adding an open curve

With this function, an open spline curve is added. When a curve is added, its line properties are defined. A minimum of four points are selected for an open spline curve. When the points have been selected, a start direction for the start point and end direction for the end point are selected. The start direction is the tangent of the spline curve formed from the start point. The end direction is the tangent of the spline curve formed to the end point.

1. Select Lines > Add Open Curve.
2. Define the properties of the open spline curve.
3. Select at least four points of the curve and select Confirm.
4. Select the direction of the start point of the curve.
5. Select the direction of the end point of the curve.

   The curve starts parallel to TAN1.
   The curve ends parallel to TAN2.

   

   Modeling spline curve.

   

Line properties
Lines