On Fri, 14 Oct 2022 16:09:41 -0700
Thangalin wrote:
> Would making the conditional part of the API be useful to others?
Of course, $\tan^{-1}(\pm 1)$ is undefined (mathematically).
Alan
___
If your question is of
That's certainly tighter, thank you, Alan.
Would making the conditional part of the API be useful to others?
Cheers!
On Fri, Oct 14, 2022 at 3:42 PM Alan Braslau wrote:
>
> On Fri, 14 Oct 2022 11:59:49 -0700
> Thangalin wrote:
>
> > I don't think an atantwo is needed. I *thought* I had read
On Fri, 14 Oct 2022 11:59:49 -0700
Thangalin wrote:
> I don't think an atantwo is needed. I *thought* I had read somewhere
> that atan( y, x ) was equivalent to calling atan2 in Lua. Ensuring
> there's no breakage when x == y would be nice, though. It was a little
> surprising to see angle
I don't think an atantwo is needed. I *thought* I had read somewhere
that atan( y, x ) was equivalent to calling atan2 in Lua. Ensuring
there's no breakage when x == y would be nice, though. It was a little
surprising to see angle return degrees rather than radians, but it
does simplify my code:
On Fri, 14 Oct 2022 10:07:19 +0200
Hans Hagen via ntg-context wrote:
> So you suggest to add atantwo? As side note, you can redure your
> definition to:
>
> vardef atantwo(expr dy, dx) =
> if dx == 0 :
> if dy < 0 : - fi pi / 2
> else :
>
On Fri, 14 Oct 2022 at 14:58, Taco Hoekwater via ntg-context <
ntg-context@ntg.nl> wrote:
>
>
> > On 14 Oct 2022, at 14:26, Alan Braslau via ntg-context <
> ntg-context@ntg.nl> wrote:
> >
> > Are you using MP in scaled integer or in doubleprecision mode?
> >
> > I have not looked into the MP
> On 14 Oct 2022, at 14:26, Alan Braslau via ntg-context
> wrote:
>
> Are you using MP in scaled integer or in doubleprecision mode?
>
> I have not looked into the MP angle operator code, but my suspicion is that
> it is based on some super-clever John Hobby scheme optimized for scaled
>
Are you using MP in scaled integer or in doubleprecision mode?
I have not looked into the MP angle operator code, but my suspicion is
that it is based on some super-clever John Hobby scheme optimized for
scaled integer calculations.
Hans has integrated the entire math library (and more) into
On 10/14/2022 2:35 AM, Max Chernoff via ntg-context wrote:
Hi,
The angle function doesn't appear to provide the same calculation as
my atantwo in all cases.
They both give the same results, but "angle" gives a result in degrees
while "atantwo" gives a result in radians. This demo:
Hi,
> The angle function doesn't appear to provide the same calculation as
> my atantwo in all cases.
They both give the same results, but "angle" gives a result in degrees
while "atantwo" gives a result in radians. This demo:
\startMPpage
vardef atantwo( expr dy, dx ) =
Thank you, Max.
The angle function doesn't appear to provide the same calculation as
my atantwo in all cases.
https://pdfhost.io/v/Oqj7XmibJ_scaled
The shorter line segment should be directed towards the vertex closest
to the longer line segment. I tried using both:
theta := angle( dx, dy
Hi,
> How is atan2 called? I rolled my own as follows:
> Is atan with two parameters supposed to behave like atan2?
At mp-math.mpxl:167 there is:
vardef atan primary x = angle(1,x) enddef ;
The MetaPost manual says:
The angle operator takes a pair and computes the
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