William F Pokorny <ano### [at] anonymousorg> wrote:
> Adding the inbuilt functions: f_bezier_2d_linear()
> f_bezier_2d_quadratic() f_bezier_2d_cubic() f_bezier_2d_quartic() and
> f_bezier_2d_quintic() to the next yuqk release (R19).
>
> The functions take and return single float packed 2d vectors in a
> double's space for control points and return values. Calculations are at
> double float accuracy internal to each functions code. The t parameter
> is passed as a double.
>
> The calculation and return mode settings:
>    0=<u,v> at t.
>    1=<u',v'> at t.             (Tangent normalized)
>    2=<normal u,normal v> at t. ((1) rotated for normal)
>    3=<u',v'> at t.             (Tangent / velocity)
>    4=<u'',v''> at t.           (Acceleration / change in tangent)
>    5=<u''',v'''> at t.         (Jerk / change in acceleration)
>
> Attaching images showing all six calculation and return modes for
> f_bezier_2d_cubic() f_bezier_2d_quartic() and f_bezier_2d_quintic().
>...

Hi Bill

That is Interesting.

But I can't figure out how to interpret the two bottom graphs in the
attached images.

--
Tor Olav
http://subcube.com
https://github.com/t-o-k

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