Add a free curve, with a specified angle range and radius, between two entities.
This entity is defined by the attachment entities (1, 2), radius (3), solution angle, and whether the required solution is compound or reverse. The solution can vary greatly, depending on how you define the constraints.
You can use transparent commands when you are prompted to specify direction, radius, or length, and use station offsets to specify any points. For more information, see Transparent Commands.
The following illustration shows a free curve fillet between two fixed lines. There are two solutions based on the included angle of the curve:
The following illustration shows a free curve fillet between two fixed clockwise curves:
The following illustration shows a free curve fillet between a fixed clockwise curve and a fixed counter-clockwise curve:
The following illustration shows a free curve fillet between an overlapping clockwise curve and a counter-clockwise curve:
The following illustration shows a free curve fillet between a line and a clockwise curve (on the left) with a specified radius:
The following illustration shows a free curve fillet between a line and a counter-clockwise curve (on the left) with a specified radius:
To add a free curve fillet (between two entities, radius)
- Click the alignment. Click Alignment tab
Modify panelGeometry Editor
. - On the Alignment Layout Tools toolbar, click
Free Curve Fillet (Between Two Entities, Radius). - Specify the entity (line, curve) from which you want to add the free curve.
- Specify the entity (line, curve) to which you want to add the free curve.
- Specify whether the curve solution angle is either greater than or less than 180 degrees.
- Specify the radius or [curveLen/Tanlen/Chordlen/midOrd/External/Degree of curvature].
Specify a new value, or press Enter to accept the value that is displayed on the command line.
- If the alignment has design criteria applied to it, the minimum value for the current design speed is displayed.
- If the alignment does not have design criteria applied to it, the default value specified in the curve and spiral settings is displayed. For more information, see Curve and Spiral Settings.
NoteTo calculate the radius or degree of curvature using other known curve parameters, enter 'CCALC to open the Curve Calculator. For more information, see Calculating Curve Parameters.To display a curve preview you must pick a point in the drawing or enter a coordinate value, then a rubber band is drawn to the cursor from the selected point and the curve preview is displayed.
- Specify the second point. You can enter a 2D coordinate point or use a transparent command. For more information, see Transparent Commands.