VARKON Version 1.15 1997-10-24


tang - Function

Geometrical function


Description

Returns the normalised tangent of a line, arc or curve.

Syntax

tang(ref,t)

REF ref;
FLOAT t;


Principal parameters

ref - Identity of line, arc or curve


Optional parameters

t - Parameter value, default = 0.0


Return value

A VECTOR value equal to the requested normalised tangent in the specified position.


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