Auto-generate Horizontal Curves
This dialog box is accessed from a button in the Horizontal Curves Panel. It allows you to apply your Default Curve to multiple intersection points (IPs) or to remove multiple curves. Set your Default Curve in the Horizontal Curves Panel before using this tool.
Largest radius circular curve (Radio button)
Choose this option to fit curves of various radii on your intersection points. If your default curve is a spiral, circular curves will be substituted.
Apply default radius (Radio button)
Choose this option to apply your Default Curve exactly as it is defined to intersection points in range. If the curve doesn't fit, the IP will be left without a curve.
Delete all curves (Radio button)
Choose this option to remove all curves in the specified range.
Minimum delta angle (Edit box)
If the delta angle (degrees) for a given IP is smaller than this value, no curve will be applied.
Tangent length between curves (Edit box)
Smallest distance between curves (between EC and BC). Some curves will be farther apart (applicable only when Largest radius circular curve is selected).
Maximum radius (Edit box)
Largest radius allowed (applicable only when Largest radius circular curve is selected).
Minimum radius (Edit box)
Smallest radius allowed (applicable only when Largest radius circular curve is selected).
Radius rounding value (Edit box)
Radius will be rounded down to multiples of this value (applicable only when Largest radius circular curve is selected).
Station Range (Group box)
Choose your station range here.
From Station (Edit box)
Start of station range; ".." indicates start of road.
To Station (Edit box)
End of station range; ".." indicates end of road.
Delete existing curves first (Check box)
Set this check box to first remove any existing curves in your station range. If this check box is cleared, existing curves will not be modified and only simple IP points may have curves added.
No curves modified (Error report)
Note that it is possible that no curves will be modifed; here are some possible reasons:
-
No IPs in the station range
-
Delete existing curves is not checked and there are no simple IPs in station range
-
The Default Curve does not fit on any of the IPs (tangents too short)
