Vivek,
in fact the great work is David's, not mine - I made the original
attempt, which was buggy, and then supplied a fix, but David wrote a new
version which was justified mathematically and based on Hain's paper, as
you mention. So I'll have to pass the responsibility for explaining it
to David Bevan.
Best regards,
Graham
On 30/10/2011 08:25, Vivek Rathod wrote:
Hello Graham,
I was looking at the new spline flattening algorithm that you and
David worked on.
The speed up due to this is fantastic. Great work!
I could not understand the part of the code where you compare
*s_limit* with *s
*according to Hain's paper
*dmax = (s/L) * dnorm ; *here s is not normalized. dmax is the
tolerance for flatness and dnorm is the normalized flatness of the curve.
so *s_limit* *= (dmax / dnorm) * L* ; by putting *dnorm* = 0.75 we get
the permissible height of the control point for the curve not to be split.
so should we not be comparing *s= abs(dy * dxi - dx * dyi)* with
*s_limit * L *instead of *s* and *s_limit* ( because s is
perpendicular distance of control point multiplied by L) ?
Am I missing something very obvious?
*
*Thanks,
Vivek Rathod
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