VARKON Version 1.15 1997-10-24

inv_curv - Function

Geometrical function


Description

Returns the parameter value of a position on a curve having a specified curvature.

Syntax

inv_curv(ref,curv,alt)

REF	ref;
FLOAT	curv;
INT	alt;

Principal parameters

ref	- Identity of curve
curv	- Curvature

Optional parameters

alt	- Alternative, default = 1

Return value

A FLOAT value equal to the parameter value of the requested position.

Example

inv_curv(#5,0.01)

The parameter value of a position on #5 where curvature is equal to 1/100.

Comments

If more than one position on the entity has the specified curvature alt can be used to select the right solution.

Curvature is equal to the inverse of curvature radius.