Curve measurement
functions
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Function
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Description
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(vlax-curve-getClosestPointTo curve-obj
givenPnt [ extend])
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Returns
the point (in WCS coordinates) on a curve that is nearest to the
specified point
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(vlax-curve-getClosestPointToProjection curve-obj
givenPnt normal [ extend])
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Returns
the point (in WCS coordinates) on a curve that is nearest to the
specified point
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(vlax-curve-getDistAtParam curve-obj param)
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Returns
the length of the curve's segment from the curve's beginning to
the specified point
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(vlax-curve-getDistAtPoint curve-obj point)
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Returns
the length of the curve's segment between the curve's start point
and the specified point
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(vlax-curve-getEndParam curve-obj)
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Returns
the parameter of the endpoint of the curve
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(vlax-curve-getEndPoint c urve-obj)
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Returns
the endpoint (in WCS coordinates) of the curve
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(vlax-curve-getEndPoint curve-obj param)
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Returns
the distance along the curve from the beginning of the curve to
the location of the specified parameter
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(vlax-curve-getFirstDeriv curve-obj
param)
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Returns
the first derivative (in WCS coordinates) of a curve at the specified location
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(vlax-curve-getParamAtDist curve-obj point)
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Returns
the parameter of the curve at the point
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(vlax-curve-getParamAtPoint curve-obj dist)
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Returns
the point (in WCS coordinates) along a curve at the distance specified
by the user
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(vlax-curve-getPointAtParam curve-obj param)
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Determines
the point on the curve that corresponds to the param parameter
and returns the point
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(vlax-curve-getArea curve- obj)
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Returns
the area inside the curve
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(vlax-curve-getSecondDeriv curve-obj
param)
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Returns
the second derivative (in WCS coordinates) of a curve at the specified location
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(vlax-curve-getStartParam curve-obj)
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Returns
the start parameter on the curve
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(vlax-curve-getStartPoint curve-obj)
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Returns
the start point (in WCS coordinates) of the curve
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(vlax-curve-getIsClosed curve-obj)
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Determines
if the specified curve is closed (i.e., start point is same as endpoint)
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(vlax-curve-isPeriodic curve-obj)
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Determines
if the specified curve has an infinite range in both directions
and there is a period value dT, such that
there is a point on curve at ( u + dT)
= point on curve ( u), for any parameter u
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(vlax-curve-isPlanar curve-obj)
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Determines
if there is a plane that contains the curve
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