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


From: David Kastrup
Subject: Re: How to get X/Y-extent of a bezier-curve?
Date: Tue, 06 Oct 2015 14:49:45 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux)

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.

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.

-- 
David Kastrup



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