Re: How to get X/Y-extent of a bezier-curve?

[Thomas Morley]

2015-10-06 14:49 GMT+02:00 David Kastrup <address@hidden>:
> Thomas Morley <address@hidden> writes:
>
>> Hi all,
>>
>> I'm going to write a generic bow-stencil.
>> Below you'll find a boiled down example.
>>
>> The main problem: how to determine the correct extents.
>> Looks like I need to calculate the actual X/Y-extents of the resulting
>> bezier-curve.
>> Though, obviously my maths-skills are not sufficient.
>
> Oh, that's a nuisance.
>
>> Any hints?
>
> I'd just call make-path-stencil and use the bounding box results from
> that.  No need to reinvent the wheel.

Yep.
Using make-path-stencil is much more straight-forward.
Thanks.

If someone interested, I'll attach an image with an excerpt of my test-suite.

I plan to replace make-parenthesis-stencil and to implement
https://sourceforge.net/p/testlilyissues/issues/3088/

>
> While this particular wheel could likely profit from a do-over with more
> of a view towards efficiency and numerical robustness, there is no point
> in code duplication.

I think we could replace the body of current
make-bezier-sandwich-stencil with make-path-stencil.
But obviously you think about some deeper modification.
Could you give some details?

Cheers,
  Harm

generic-bow-stencil-test-03.png
Description: PNG image