Function Entry: VLAX-CURVE-GETDISTATPARAM

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Function Entry: VLAX-CURVE-GETDISTATPARAM

Name

vlax-curve-getDistAtParam

Class

Visual LISP curve function

Syntax

(vlax-curve-getDistAtParam curve param)

Arguments and Values

curve — VLA-object designating a curve.
param — number specifying a parameter on the curve.

Description

Returns the length of the curve's segment from the curve's beginning to the specified parameter.

Return Values

real or nil

Side Effects

None.

Availability

AutoCAD 2026: documented (per Autodesk reference page).
BricsCAD V26: presumed compatible (no contradicting page found).
Status: AutoCAD documented; BricsCAD presumed-both pending Phase 4 verification.

Source Notes

[vlax-curve-getDistAtParam (AutoLISP/ActiveX)](https://help.autodesk.com/view/CIV3D/2025/ENU/?guid=GUID-8FF6D3D5-7EA5-4E9A-8A61-295C0562E7AE)
Status: documented.

Compatibility

ActiveX curve measurement is Windows-only in Autodesk's platform model.