[pdf-devel] type 0 functions, splines

[Hardy Falk]

Hi ,
Cubic splines require the solution of a system of linear 
equations. I am not sure if the spec intends this.
If true C2 continuity is not important and C1 continuity is 
enough, I might use cubic hermite interpolation. This is only 
slightly more complex than linear interpolation, using four 
adjacent samples instead of two, and the 
interpolated surface  *looks* the same.

These splines, also called Catmull-Rom splines, are not popular 
in numerical analysis. They are, however, quite popular in the 
computer graphics area. This might be a cue. 
Does anybody know which kind of spline is used in acroread?