arcLengthCurve()

Synopsis

Returns the length along the curve between two locations on the curve. The length attribute of CurveMixin is computed by this function using the startPoint and endPoint attributes of the curve.

See Also: curvePointAtLength()

Syntax

arcLengthCurve ( curve As Part, _
                 p1 As Point, _
                 p2 As Point ) As Number 

Argument	Type	Description
curve	part	The curve whose length is to be computed. Must be a kind of CurveMixin.
p1	point	The point at which the measurement should start.
p2	point	The point at which the measurement should end.

Example 1

Intent >arcLengthCurve(Arc_1, Arc_1.StartPoint, Arc_1.MidPoint) 
--> 15.708 

The length of half the arc.

Example 2

Intent >arcLengthCurve(splineCurve_1, splineCurve_1.StartPoint, splineCurve_1.endPoint) 
--> 9.018 

This is the true length of splineCurve_1, and is the same value that the length attribute would return.