Re: [ft-devel] "Inside the fastest font renderer in the world" - conversion started

[Graham Asher]

Hi Werner,

yes, I e-mailed him yesterday, and asked a question about his code too, 
but with no great hope of an early reply, knowing he's busy. I asked him 
why his code to handle quadratic splines used a division into a number 
of evenly spaced values for the t parameter rather than recursive 
Casteljau splitting. The question was triggered by seeing that there is 
a handler for quadratic splines but not for cubics in his code (it was 
written for TrueType only). I suspect the answer has to do with the use 
of floating-point rather than integer arithmetic, but if there is no 
good reason I will be tempted to (for now) use Casteljau splitting for 
cubic splines, or for both types. I am almost certain that it will have 
little impact on efficiency, or even improve it, but let's see.

- Graham


On 12/08/2016 06:45, Werner LEMBERG wrote:
> Hello Graham,
>
> > I have started converting it to C++.  I will do that for now because
> > C would adds an extra layer of difficulty and slow the work down;
> > but don't worry, there's no rocket science, and it should be easy to
> > produce a C version when I've done it.
> great!  Please inform Raph also (in case you haven't done so); I think
> he is not on this list.
>
> > Wish me luck...
> I do :-)
>
>
>      Werner
>
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