This Curve Calculator command displays a dialog box with a series of edit boxes that are filled in with the values of a curve. You can input two known values and the program calculates the other values. One of the known values must be the radius or the delta angle. The 3 Points option allows you to simply select three on-screen point locations. All of the fields will immediately be filled in after the picking of the third point. Optionally, you can also input point numbers from a coordinate file.
Roadway or Railroad:
Allows you to choose which type of curve you would like information
on. Toggling between the two, after data is entered, will reveal
different values.
Select: Allows you to select an arc from the drawing. The
information for the selected arc is displayed in the dialog
box.
3 Points: Allows you to specify three points on the screen
to define an arc. The information for this defined arc is displayed
in the dialog box.
Plot: Allows you to plot the currently defined arc in the
drawing.
Clear: Clears all edit boxes in the dialog.
Curve Calculator dialog Enter at least two values, as
described above
The dialog box first pops up without any
data in the fields. The above dialog graphic is a result of
entering in the radius and the arc length values of a known curve,
then the Enter or
Tab key.
Pulldown Menu Location: Draw > Arc
Keyboard Command: curvecalc
Prerequisite: None