Re: [NTG-context] clipping in metafun has weird side effects
On 10/31/2014 1:33 PM, Tobias Columbus wrote: On Fri, Oct 31, 2014 at 12:22:37PM +0100, Hans Hagen wrote: On 10/31/2014 10:15 AM, Tobias Columbus wrote: def a_impl text t = begingroup save c ; picture c ; c := mycircle ; clip c to bbox c scaled 0.5 ; try this to see what happens: % clip c to bbox c scaled 0.5 ; draw bbox c scaled 0.5 ; and then this to solve it: clip c to bbox (c scaled 0.5) ; I tried your suggestions and attached both the example and output. Drawing and clipping solves the problem indeed. But using only the modified clip either does not solve the problem, or I am just too stupid to implement your solution. Note also that in the modified example the context output coincides with the mptopdf output if one draws the label before calling test the second time. (I marked the position in the metapost file.) Sorry for probably getting on your nerves ... hopefully ok in next beta Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] clipping in metafun has weird side effects
On Sun, Nov 02, 2014 at 11:29:24AM +0100, Hans Hagen wrote: On 10/31/2014 1:33 PM, Tobias Columbus wrote: On Fri, Oct 31, 2014 at 12:22:37PM +0100, Hans Hagen wrote: On 10/31/2014 10:15 AM, Tobias Columbus wrote: def a_impl text t = begingroup save c ; picture c ; c := mycircle ; clip c to bbox c scaled 0.5 ; try this to see what happens: % clip c to bbox c scaled 0.5 ; draw bbox c scaled 0.5 ; and then this to solve it: clip c to bbox (c scaled 0.5) ; I tried your suggestions and attached both the example and output. Drawing and clipping solves the problem indeed. But using only the modified clip either does not solve the problem, or I am just too stupid to implement your solution. Note also that in the modified example the context output coincides with the mptopdf output if one draws the label before calling test the second time. (I marked the position in the metapost file.) Sorry for probably getting on your nerves ... hopefully ok in next beta Hans Seems to be fixed in 2014.11.02 12:23. Thank you very much! Tobias - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___ -- ___ 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] clipping in metafun has weird side effects
Hi again,
I tried my example from yesterday in context with metapost format, but
the output still differs from what mptopdf produces.
While doing that, I noticed that the mpost format is currently not usable out of
the box:
\startMPcode{metapost}
draw (0,0) -- (1cm,0) ;
\stopMPcode
produces the error message
mfun_first_run
true
! Equation cannot be performed (numeric=boolean).
and the same for 'mfun_trial_run'. Simply adding
boolean mfun_trial_run, mfun_first_run ;
to texmf/metapost/base/mpost.mp resolved the issue for me. However, that may
introduce other complications that I have no idea of.
Tobias
On Thu, Oct 30, 2014 at 08:56:34PM +0100, Tobias Columbus wrote:
Dear all,
I stumbled upon some very weird behaviour of clipping in metafun/context.
When I
add some clipped pictures to currentpicture and draw something dashed, some
subsequent lines will also be drawn dashed.
This behaviour only shows up with context but not with mptopdf or mpost. I
attached a minimal example and the corresponding output of context and
mptopdf.
I tried context versions 2014.05.21 22:04 and 2014.10.29 17:47, but the result
is the same in both.
Tobias
--
vardef mycircle =
save c ; picture c ; c := nullpicture ;
addto c contour fullcircle scaled 2mm ;
c
enddef ;
def a expr p =
path _p_ ; _p_ := p ;
a_impl
enddef ;
def a_impl text t =
begingroup
save c ; picture c ; c := mycircle ;
clip c to bbox c scaled 0.5 ;
addto currentpicture also c t ;
addto currentpicture doublepath _p_ t ;
endgroup
enddef ;
def b expr p =
path _p_ ; _p_ := p ;
b_impl
enddef ;
def b_impl text t =
begingroup
save c; picture c ; c := mycircle ;
addto currentpicture also c t ;
addto currentpicture doublepath _p_ t ;
endgroup
enddef ;
beginfig(1)
a (0,0) -- (1cm,0) dashed evenly ;
currentpicture := currentpicture shifted (2cm,0) ;
a (0,0) -- (1cm,0) ;
currentpicture := currentpicture shifted (-2cm, 0.5cm );
b (0,0) -- (1cm,0) dashed evenly ;
currentpicture := currentpicture shifted (2cm,0) ;
b (0,0) -- (1cm,0) ;
endfig ;
end
--
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Re: [NTG-context] clipping in metafun has weird side effects
On 10/31/2014 9:58 AM, Tobias Columbus wrote:
Hi again,
I tried my example from yesterday in context with metapost format, but
the output still differs from what mptopdf produces.
While doing that, I noticed that the mpost format is currently not usable out of
the box:
\startMPcode{metapost}
draw (0,0) -- (1cm,0) ;
\stopMPcode
produces the error message
\startMPcode
draw (0,0) -- (1cm,0) ;
\stopMPcode
why the {metapost}
mfun_first_run
true
! Equation cannot be performed (numeric=boolean).
and the same for 'mfun_trial_run'. Simply adding
boolean mfun_trial_run, mfun_first_run ;
to texmf/metapost/base/mpost.mp resolved the issue for me. However, that may
introduce other complications that I have no idea of.
Tobias
On Thu, Oct 30, 2014 at 08:56:34PM +0100, Tobias Columbus wrote:
Dear all,
I stumbled upon some very weird behaviour of clipping in metafun/context. When I
add some clipped pictures to currentpicture and draw something dashed, some
subsequent lines will also be drawn dashed.
This behaviour only shows up with context but not with mptopdf or mpost. I
attached a minimal example and the corresponding output of context and mptopdf.
I tried context versions 2014.05.21 22:04 and 2014.10.29 17:47, but the result
is the same in both.
Tobias
--
vardef mycircle =
save c ; picture c ; c := nullpicture ;
addto c contour fullcircle scaled 2mm ;
c
enddef ;
def a expr p =
path _p_ ; _p_ := p ;
a_impl
enddef ;
def a_impl text t =
begingroup
save c ; picture c ; c := mycircle ;
clip c to bbox c scaled 0.5 ;
addto currentpicture also c t ;
addto currentpicture doublepath _p_ t ;
endgroup
enddef ;
def b expr p =
path _p_ ; _p_ := p ;
b_impl
enddef ;
def b_impl text t =
begingroup
save c; picture c ; c := mycircle ;
addto currentpicture also c t ;
addto currentpicture doublepath _p_ t ;
endgroup
enddef ;
beginfig(1)
a (0,0) -- (1cm,0) dashed evenly ;
currentpicture := currentpicture shifted (2cm,0) ;
a (0,0) -- (1cm,0) ;
currentpicture := currentpicture shifted (-2cm, 0.5cm );
b (0,0) -- (1cm,0) dashed evenly ;
currentpicture := currentpicture shifted (2cm,0) ;
b (0,0) -- (1cm,0) ;
endfig ;
end
--
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| 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://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
Re: [NTG-context] clipping in metafun has weird side effects
On Fri, Oct 31, 2014 at 10:05:35AM +0100, Hans Hagen wrote:
On 10/31/2014 9:58 AM, Tobias Columbus wrote:
Hi again,
I tried my example from yesterday in context with metapost format, but
the output still differs from what mptopdf produces.
While doing that, I noticed that the mpost format is currently not usable
out of
the box:
\startMPcode{metapost}
draw (0,0) -- (1cm,0) ;
\stopMPcode
produces the error message
\startMPcode
draw (0,0) -- (1cm,0) ;
\stopMPcode
why the {metapost}
I wanted to know if the impact of clipping is caused by the metafun format.
According to the wiki page
http://wiki.contextgarden.net/Command/defineMPinstance the instances metapost
and metafun are predefined and can be used by
\startMPcode{instance}
...
\stopMPcode
where metafun is the default instance, i.e. used when there is no instance
given.
mfun_first_run
true
! Equation cannot be performed (numeric=boolean).
and the same for 'mfun_trial_run'. Simply adding
boolean mfun_trial_run, mfun_first_run ;
to texmf/metapost/base/mpost.mp resolved the issue for me. However, that may
introduce other complications that I have no idea of.
Tobias
On Thu, Oct 30, 2014 at 08:56:34PM +0100, Tobias Columbus wrote:
Dear all,
I stumbled upon some very weird behaviour of clipping in metafun/context.
When I
add some clipped pictures to currentpicture and draw something dashed, some
subsequent lines will also be drawn dashed.
This behaviour only shows up with context but not with mptopdf or mpost. I
attached a minimal example and the corresponding output of context and
mptopdf.
I tried context versions 2014.05.21 22:04 and 2014.10.29 17:47, but the
result
is the same in both.
Tobias
--
vardef mycircle =
save c ; picture c ; c := nullpicture ;
addto c contour fullcircle scaled 2mm ;
c
enddef ;
def a expr p =
path _p_ ; _p_ := p ;
a_impl
enddef ;
def a_impl text t =
begingroup
save c ; picture c ; c := mycircle ;
clip c to bbox c scaled 0.5 ;
addto currentpicture also c t ;
addto currentpicture doublepath _p_ t ;
endgroup
enddef ;
def b expr p =
path _p_ ; _p_ := p ;
b_impl
enddef ;
def b_impl text t =
begingroup
save c; picture c ; c := mycircle ;
addto currentpicture also c t ;
addto currentpicture doublepath _p_ t ;
endgroup
enddef ;
beginfig(1)
a (0,0) -- (1cm,0) dashed evenly ;
currentpicture := currentpicture shifted (2cm,0) ;
a (0,0) -- (1cm,0) ;
currentpicture := currentpicture shifted (-2cm, 0.5cm );
b (0,0) -- (1cm,0) dashed evenly ;
currentpicture := currentpicture shifted (2cm,0) ;
b (0,0) -- (1cm,0) ;
endfig ;
end
--
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| 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://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
--
___
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://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
Re: [NTG-context] clipping in metafun has weird side effects
On 10/31/2014 10:15 AM, Tobias Columbus wrote:
On Fri, Oct 31, 2014 at 10:05:35AM +0100, Hans Hagen wrote:
On 10/31/2014 9:58 AM, Tobias Columbus wrote:
Hi again,
I tried my example from yesterday in context with metapost format, but
the output still differs from what mptopdf produces.
While doing that, I noticed that the mpost format is currently not usable out of
the box:
\startMPcode{metapost}
draw (0,0) -- (1cm,0) ;
\stopMPcode
produces the error message
\startMPcode
draw (0,0) -- (1cm,0) ;
\stopMPcode
why the {metapost}
I wanted to know if the impact of clipping is caused by the metafun format.
According to the wiki page
http://wiki.contextgarden.net/Command/defineMPinstance the instances metapost
and metafun are predefined and can be used by
\startMPcode{instance}
...
\stopMPcode
where metafun is the default instance, i.e. used when there is no instance
given.
i fixed the metapost run and also added basic text support in it (next
beta)
mfun_first_run
true
! Equation cannot be performed (numeric=boolean).
and the same for 'mfun_trial_run'. Simply adding
boolean mfun_trial_run, mfun_first_run ;
to texmf/metapost/base/mpost.mp resolved the issue for me. However, that may
introduce other complications that I have no idea of.
Tobias
On Thu, Oct 30, 2014 at 08:56:34PM +0100, Tobias Columbus wrote:
Dear all,
I stumbled upon some very weird behaviour of clipping in metafun/context. When I
add some clipped pictures to currentpicture and draw something dashed, some
subsequent lines will also be drawn dashed.
This behaviour only shows up with context but not with mptopdf or mpost. I
attached a minimal example and the corresponding output of context and mptopdf.
I tried context versions 2014.05.21 22:04 and 2014.10.29 17:47, but the result
is the same in both.
Tobias
--
vardef mycircle =
save c ; picture c ; c := nullpicture ;
addto c contour fullcircle scaled 2mm ;
c
enddef ;
def a expr p =
path _p_ ; _p_ := p ;
a_impl
enddef ;
def a_impl text t =
begingroup
save c ; picture c ; c := mycircle ;
clip c to bbox c scaled 0.5 ;
addto currentpicture also c t ;
addto currentpicture doublepath _p_ t ;
endgroup
enddef ;
def b expr p =
path _p_ ; _p_ := p ;
b_impl
enddef ;
def b_impl text t =
begingroup
save c; picture c ; c := mycircle ;
addto currentpicture also c t ;
addto currentpicture doublepath _p_ t ;
endgroup
enddef ;
beginfig(1)
a (0,0) -- (1cm,0) dashed evenly ;
currentpicture := currentpicture shifted (2cm,0) ;
a (0,0) -- (1cm,0) ;
currentpicture := currentpicture shifted (-2cm, 0.5cm );
b (0,0) -- (1cm,0) dashed evenly ;
currentpicture := currentpicture shifted (2cm,0) ;
b (0,0) -- (1cm,0) ;
endfig ;
end
--
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| 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://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
--
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| 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://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
Re: [NTG-context] clipping in metafun has weird side effects
On 10/31/2014 10:15 AM, Tobias Columbus wrote: def a_impl text t = begingroup save c ; picture c ; c := mycircle ; clip c to bbox c scaled 0.5 ; try this to see what happens: % clip c to bbox c scaled 0.5 ; draw bbox c scaled 0.5 ; and then this to solve it: clip c to bbox (c scaled 0.5) ; - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] clipping in metafun has weird side effects
On Fri, Oct 31, 2014 at 12:22:37PM +0100, Hans Hagen wrote: On 10/31/2014 10:15 AM, Tobias Columbus wrote: def a_impl text t = begingroup save c ; picture c ; c := mycircle ; clip c to bbox c scaled 0.5 ; try this to see what happens: % clip c to bbox c scaled 0.5 ; draw bbox c scaled 0.5 ; and then this to solve it: clip c to bbox (c scaled 0.5) ; I tried your suggestions and attached both the example and output. Drawing and clipping solves the problem indeed. But using only the modified clip either does not solve the problem, or I am just too stupid to implement your solution. Note also that in the modified example the context output coincides with the mptopdf output if one draws the label before calling test the second time. (I marked the position in the metapost file.) Sorry for probably getting on your nerves ... - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___ -- mwe-context.pdf Description: Adobe PDF document mwe-mptopdf.pdf Description: Adobe PDF document vardef mycircle = save c ; picture c ; c := nullpicture ; addto c contour fullcircle scaled 2mm ; c enddef ; def test (expr m) expr p = path _p_ ; _p_ := p ; scantokens m enddef ; def only_clip text t = begingroup save c ; picture c ; c := mycircle ; clip c to bbox (c scaled 0.5) ; addto currentpicture also c t ; addto currentpicture doublepath _p_ t ; endgroup enddef ; def no_clip text t = begingroup save c; picture c ; c := mycircle ; addto currentpicture also c t ; addto currentpicture doublepath _p_ t ; endgroup enddef ; def draw_clip text t = begingroup save c ; picture c ; c := mycircle ; draw bbox (c scaled 0.5) ; clip c to bbox (c scaled 0.5) ; addto currentpicture also c t ; addto currentpicture doublepath _p_ t ; endgroup enddef ; beginfig(1) for macro = only_clip, no_clip, draw_clip: test( macro ) (0,0) -- (1cm,0) dashed evenly ; % NOTE: % Drawing the label here makes the weird second dashed line go away. % label.rt(macro, (-5cm,0) ); currentpicture := currentpicture shifted (-2cm,0) ; test( macro ) (0,0) -- (1cm,0) ; label.rt(macro, (-5cm,0) ); currentpicture := currentpicture shifted(2cm,0.5cm ); endfor endfig ; end ___ 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
