Curve by Formula Dialog

Used to place any conceivable curve as a B-spline, or as a line string, based on a mathematical formula.

You can access this dialog from the following:

Ribbon: Drawing > Home > Placement > Create Curves split button
Toolbox: Curve Utilities

Equations that define a curve can be entered, and edited, directly in the list box below the curve name. Each equation must end with a semicolon ";".

The dynamics reflect any changes in the variable-value pairs defining the curve if a placement tool is selected.

Setting	Description
Name	Displays the name of the currently loaded curve. The list box below displays the equations associated with the displayed curve.
List box	Displays the equations associated with the selected curve. These may be edited, or new equations added, directly in the list box. Each equation must end with a semicolon ";".
Tolerance	Sets the tolerance. `CURVCALC` `DIALOG` `ACTIVE` `TOLERANCE` [ `value` ]
Mode	Sets how the curve is created. Defined — Curve is created directly from the equations defined in the list box. Derived — Curve created from the equations and a root curve.
Angle	Sets how angles are input. Radian — Values are in radians. Degree — Values are in degrees.
Create As	Sets the type of curve that is created. Bspline — Curve is created as a B-spline (NURB) element. Line String — Curve is created as a line string element.
Place	Constructs the curve and attaches it to the pointer, ready for placement in the model.
File > Open File	Opens the Open (resource file) dialog, which is used to open a library of predefined curves. `CURVCALC` `DIALOG` `MENU` `OPENFILE` `<filename>` Note: By default, looks for ".rsc" files in the directory pointed to by the MS_DATA configuration variable.
File > More Curves	Opens the Open Curve Resource dialog, which lets you select a new curve from the open curve resource file, or a new curve resource file and curve. `CURVCALC` `DIALOG` `MENU` `OPENCURVE` `<CURVE NUMBER>`
File > New Curve	Lets you create a new curve definition. `CURVCALC` `DIALOG` `MENU` `NEWCURVE`
File > Save	Saves the curve library file. `MDL` `LOAD` `CURVCALC` `MENU` `SAVE`
File > Save To...	Opens the Save to New Resource File dialog which is used to create a new curve library file. `CURVCALC` `DIALOG` `MENU` `SAVETO`
Insert menu	Lists a selection of the constants and functions that you can select to be inserted in the curve equations. Included are: Constants: pi and e Functions: sin, cos, tan, asin, acos, atan, atan2, sinh, cosh, tanh, asinh, exp, ldexp, log, log 10, pow, and sqrt.