* Radius attribute and scaling in lmt_shade[ ]
@ 2022-01-06 15:57 Keith McKay via ntg-context
2022-01-09 15:53 ` Keith McKay via ntg-context
0 siblings, 1 reply; 4+ messages in thread
From: Keith McKay via ntg-context @ 2022-01-06 15:57 UTC (permalink / raw)
To: ntg-context; +Cc: Keith McKay
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Hi
In the code below you will see that I have created a closed path and
performed scaling, and shading on the path with lmt_shade [ ]. I have
noticed a few features which may or may not be bugs depending on whether
scaled is applied to the path within the square brackets or outside.
1) Applying scaled to the path within the square brackets and
incrementing the radius key I can see the shaded areas changing, however
the first two shapes show incorrect scaling and have ragged edges.
2) When scaled is applied outside the square brackets all shapes are the
same size and no ragged edges, however the shading is not showing
correctly with increasing radius.
Am I missing something?
Best Wishes
Keith McKay
*******************MWE*****************
\setuppapersize[A4, landscape]
\starttext
\dorecurse{10}{
\startMPpage
StartPage;
width := 27; height := 18;
path r;
r := (0.25cm,0cm)--(0cm,1.5cm)..(0.25cm,1.75cm)..(0.5cm,1.5cm) -- cycle;
definecolor [ name = "MyColor1", r = uniformdeviate(1), g =
uniformdeviate(1), b = uniformdeviate(1) ] ;
definecolor [ name = "MyColor2", r = uniformdeviate(1), g =
uniformdeviate(1), b = uniformdeviate(1) ] ;
for k = 0.5 step 0.25 until 2:
draw lmt_shade [
path = r ,
direction = "up",
alternative = "circular",
radius = k*cm,
colors = { "MyColor1", "MyColor2" },
] scaled 4.5 shifted((k *12)*cm,12*cm);
draw lmt_shade [
path = r scaled 4.5,
direction = "up",
alternative = "circular",
radius = k*cm,
colors = { "MyColor1", "MyColor2" },
] shifted((k *12)*cm,1cm);
endfor;
StopPage;
\stopMPpage
}
\stoptext
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___________________________________________________________________________________
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: Radius attribute and scaling in lmt_shade[ ]
2022-01-06 15:57 Radius attribute and scaling in lmt_shade[ ] Keith McKay via ntg-context
@ 2022-01-09 15:53 ` Keith McKay via ntg-context
2022-01-09 22:26 ` Hans Hagen via ntg-context
0 siblings, 1 reply; 4+ messages in thread
From: Keith McKay via ntg-context @ 2022-01-09 15:53 UTC (permalink / raw)
To: ntg-context; +Cc: Keith McKay
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Since "a picture paints a thousand words", I attach a pdf showing the
results of the execution of the code.
Are these bugs or... ?
Best Wishes
Keith
On 06/01/2022 15:57, Keith McKay wrote:
>
> Hi
>
> In the code below you will see that I have created a closed path and
> performed scaling, and shading on the path with lmt_shade [ ]. I have
> noticed a few features which may or may not be bugs depending on
> whether scaled is applied to the path within the square brackets or
> outside.
>
> 1) Applying scaled to the path within the square brackets and
> incrementing the radius key I can see the shaded areas changing,
> however the first two shapes show incorrect scaling and have ragged edges.
>
> 2) When scaled is applied outside the square brackets all shapes are
> the same size and no ragged edges, however the shading is not showing
> correctly with increasing radius.
>
> Am I missing something?
>
> Best Wishes
>
> Keith McKay
>
> *******************MWE*****************
>
> \setuppapersize[A4, landscape]
>
> \starttext
>
> \dorecurse{10}{
>
> \startMPpage
>
> StartPage;
>
> width := 27; height := 18;
>
> path r;
>
> r := (0.25cm,0cm)--(0cm,1.5cm)..(0.25cm,1.75cm)..(0.5cm,1.5cm) -- cycle;
>
> definecolor [ name = "MyColor1", r = uniformdeviate(1), g =
> uniformdeviate(1), b = uniformdeviate(1) ] ;
>
> definecolor [ name = "MyColor2", r = uniformdeviate(1), g =
> uniformdeviate(1), b = uniformdeviate(1) ] ;
>
> for k = 0.5 step 0.25 until 2:
>
> draw lmt_shade [
>
> path = r ,
>
> direction = "up",
>
> alternative = "circular",
>
> radius = k*cm,
>
> colors = { "MyColor1", "MyColor2" },
>
> ] scaled 4.5 shifted((k *12)*cm,12*cm);
>
> draw lmt_shade [
>
> path = r scaled 4.5,
>
> direction = "up",
>
> alternative = "circular",
>
> radius = k*cm,
>
> colors = { "MyColor1", "MyColor2" },
>
> ] shifted((k *12)*cm,1cm);
>
> endfor;
>
> StopPage;
>
> \stopMPpage
>
> }
>
> \stoptext
>
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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: Radius attribute and scaling in lmt_shade[ ]
2022-01-09 15:53 ` Keith McKay via ntg-context
@ 2022-01-09 22:26 ` Hans Hagen via ntg-context
2022-01-12 11:24 ` Keith McKay via ntg-context
0 siblings, 1 reply; 4+ messages in thread
From: Hans Hagen via ntg-context @ 2022-01-09 22:26 UTC (permalink / raw)
To: mailing list for ConTeXt users; +Cc: Hans Hagen, Keith McKay
On 1/9/2022 4:53 PM, Keith McKay via ntg-context wrote:
> Since "a picture paints a thousand words", I attach a pdf showing the
> results of the execution of the code.
>
> Are these bugs or... ?
more interplay between parameters ...
draw lmt_shade [
trace = true,
path = r shifted - center r,
direction = "up",
alternative = "circular",
radius = k*cm,
colors = { "MyColor1", "MyColor2" },
] scaled 4 shifted((k *12)*cm,12*cm);
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: Radius attribute and scaling in lmt_shade[ ]
2022-01-09 22:26 ` Hans Hagen via ntg-context
@ 2022-01-12 11:24 ` Keith McKay via ntg-context
0 siblings, 0 replies; 4+ messages in thread
From: Keith McKay via ntg-context @ 2022-01-12 11:24 UTC (permalink / raw)
To: Hans Hagen; +Cc: Keith McKay, mailing list for ConTeXt users
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Thanks Hans. Something else I've learned.
Best Wishes
Keith
On Sun, 9 Jan 2022, 22:26 Hans Hagen, <j.hagen@xs4all.nl> wrote:
> On 1/9/2022 4:53 PM, Keith McKay via ntg-context wrote:
> > Since "a picture paints a thousand words", I attach a pdf showing the
> > results of the execution of the code.
> >
> > Are these bugs or... ?
> more interplay between parameters ...
>
> draw lmt_shade [
> trace = true,
> path = r shifted - center r,
> direction = "up",
> alternative = "circular",
> radius = k*cm,
> colors = { "MyColor1", "MyColor2" },
> ] scaled 4 shifted((k *12)*cm,12*cm);
>
>
>
> -----------------------------------------------------------------
> Hans Hagen | PRAGMA ADE
> Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
> tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> -----------------------------------------------------------------
>
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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 4+ messages in thread
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2022-01-06 15:57 Radius attribute and scaling in lmt_shade[ ] Keith McKay via ntg-context
2022-01-09 15:53 ` Keith McKay via ntg-context
2022-01-09 22:26 ` Hans Hagen via ntg-context
2022-01-12 11:24 ` Keith McKay via ntg-context
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