Alexei,
I did not mean to talk about the tolerance on deviation.
I misunderstood this comment.
"/* Max deviation may be as much as (s/L) * 3/4 (if Hain's v = 1). */"
Here, I think, the max deviation is in Hain's r s coordinate system(
section 3) and s is the actual control point distance limit.
On Mon, Oct 31, 2011 at 4:45 PM, Alexei Podtelezhnikov
wrote:
> On Mon, Oct 31, 2011 at 3:22 AM, Vivek Rathod wrote:
>> s is calculated as
>> "s = FT_ABS( dy * dx1 - dx * dy1 );" which means s is the perpendicular
>> distance of the control point from chord multiplied by L
>>
>
>> which means c
Hi All,
I finally understand where Vivek is coming from. There is a temptation
to tolerate deviations larger than ONE_PIXEL on long arches that may appear
with larger font sizes (say, 24 pixels or more). Sure, they'll look
smooth (not angular).
We are not about smoothness though. We need correct p
On Mon, Oct 31, 2011 at 7:43 AM, Vivek Rathod wrote:
> The formula for deviation ( from Hein's paper).
> d = dnorm * s ; here s is normalized --- (1)
> so the formula when s is not normalized becomes d = dnorm * (s / L) ;
> -(2)
> and I think the L you are mentioni
On Mon, Oct 31, 2011 at 3:22 AM, Vivek Rathod wrote:
> s is calculated as
> "s = FT_ABS( dy * dx1 - dx * dy1 );" which means s is the perpendicular
> distance of the control point from chord multiplied by L
>
> which means currently s_limit is being compared with perpendicular distance
> of co
On Mon, Oct 31, 2011 at 5:46 AM, Alexei Podtelezhnikov
wrote:
> > On 30/10/2011 08:25, Vivek Rathod wrote:
> > 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_l
Hello Alexei, hello Vivek!
>> 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' w
> On 30/10/2011 08:25, Vivek Rathod wrote:
> 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
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
