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In AutoCAD, the spline command is used to make a smooth curve that passes through a group of points. It results in a non-uniform curve that passes through all of the points. Fit points or Control Vertices (CV) points can be used to generate splines.

Splines are an essential tool for designers and artists. They can be used to create a variety of shapes and designs. They are also very versatile in terms of size, shape, and color.

A spline is a particular function defined piecewise using polynomials in mathematics. Spline interpolation is frequently favoured to polynomial interpolation in interpolating situations because it produces similar results even when employing low degree polynomials while avoiding Runge's phenomena for higher degrees.

You can create a polyline and then use the Spline tool to add a smooth curve to it. You will then be able to choose a start point and an endpoint on the spline.

Types of splines:

  • Parametric splines: These types of splines can be created by using a number of parameters that are set by the user. They can be adjusted to create different shapes. They are also more accurate than other types of splines because they can be adjusted to match exact measurements.
  • Numeric spline: These types of splines have a fixed number of points that they follow, which makes them easier to use but less accurate than parametric ones.

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