2012

Table Of Contents
You can choose the spacing of these knots with the knot parameterization
option, which will result in different curves as shown in the example.
NOTE There is no best choice for knot parameterization for all cases. The chord
length parameterization is commonly used, and the square root (centripetal)
parameterization often produces better curves depending on the data set.
When the Tolerance value is set to 0, the spline passes directly through the
fit points. With larger tolerance values, the spline passes near the fit points.
Optionally, you can specify the tangent direction for the spline at each end.
NOTE The fit point method always results in a degree 3 spline.
Special Cases
You can create a spline with a parabolic shape by specifying a degree 2 spline
created with exactly 3 control vertices as shown on the left. Degree 3 splines
created with 4 control vertices have the same shape as Bezier curves of degree
3 as shown on the right.
Draw Splines | 585