10-24-2019
08:48 AM
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10-24-2019
08:48 AM
The location of CVs plus the degree of the spline and the weight for the CV determines the precise shape of the NURBS. When creating an AutoCAD spline using the Control Vertices method the default degree is 3 and the weight of each CV is 1. This applies to the end points as well (they are CVs).
When creating a spline with fit points, AutoCAD uses an algorithm to determine the location of CVs. For a 3rd degree NURBS, the 4 CVs adjacent to the spline segment determine its shape. The shape at the start and end of the spline is determined by the first 4 or last 4 CVs.
lee.minardi