[NTG-context] Re: MetaPost lines in tables?
Am 22.02.24 um 18:35 schrieb Hans Hagen via ntg-context:
On 2/21/2024 7:47 PM, Henning Hraban Ramm wrote:
(I’m sure I already used that somewhere… Must document…)
ok, new feature dedicated to Hraban ... who then of course has to
document it.
This is nice.
Thank you, will do.
(Actually I’m not much interested in dashed borders but to have lines
affected by my sketchy style - courtesy of Aditya et al., see below)
Taco, will the syntax pages in the wiki update automatically to a newer
version?
"""
\startuseMPgraphic{mp:sketchy}
input mp-sketch.mp;
sketchypaths;
sketch_amount := 1 + (uniformdeviate 2);
sketch_passes := 3;
sketch_segments := 2 + (uniformdeviate 3);
sketch_length := OverlayWidth / 3;
draw topboundary withpen pensquare withcolor lightgray;
naturalizepaths;
\stopuseMPgraphic
\defineoverlay[sketchylines][\useMPgraphic{mp:sketchy}]
\setupTABLE[r][first][style=bold]
\setupTABLE[r][each][
topoffset=1em,bottomoffset=0.5em,
background=sketchylines,
% would be nice if the background wouldn’t start at each column
]
\setupTABLE[c][each][frame=off]
\bTABLE[]
\bTR
\bTD{Stadt}\eTD
\bTD{Land}\eTD
\bTD{Fluss}\eTD
\eTR
\dorecurse{10}{
\bTR
\bTD\strut \eTD\bTD \eTD\bTD \eTD
\eTR
}
\eTABLE
"""
Hraban%D \module
%D [ file=mp-sketch.mp
%Dversion=2021.05.13
%D title=\CONTEXT\ \METAPOST\ graphics,
%D subtitle=Sketch drawing,
%D author=Aditya Mahajan,
%D date=\currentdate,
%D copyright={Aditya Mahajan}]
%D This metapost module is inspired by a TeX.SE question:
%D http://tex.stackexchange.com/q/39296/323
%D
%D I thought that it would be fun to implement a similar feature in MetaPost.
%D
%D To use this package in MetaPost:
%D
%D \starttyping
%Dinput mp-sketch;
%D
%Dbeginfig(1)
%D sketchypaths; % Make draw and fill sketchy
%D ...
%D naturalizepaths; % Restore the value of draw and fill
%D ...
%Dendfig
%D \stoptyping
%D
%D The code is heavily inspired by Hans Hagen's Metafun macros.
%D
%D The macro \type{sketchypaths} is modeled after \type{visualizepaths} from
%D \filename{mp-tool}.
def sketchypaths =
let draw = sketchdraw ;
let fill = sketchfill ;
enddef ;
%D Check if \filename{mp-tool} is loaded
if not known context_tool :
let normaldraw = draw;
let normalfill = fill;
def naturalizepaths =
let fill = normalfill ;
let draw = normaldraw ;
enddef ;
fi
%D The variable \type{sketch_amount} determines the amount of randomness in the
%D drawing
numeric sketch_amount; sketch_amount := 0.75bp;
%D The variable \type{sketch_passes} determines the number of times the path
%D is drawn
numeric sketch_passes; sketch_passes := 1;
%D Based on \type{randomized}. Assumes p is path:
numeric sketch_segments; sketch_segments := 20;
%D Length (time) of line segments:
numeric sketch_length; sketch_length := 5mm;
primarydef p sketchrandomized s = (
if path p :
for t = 0 step 1/sketch_segments until 1-1/sketch_segments :
((point (t*arclength(p)) on p)
randomshifted s) .. controls
((postcontrol (t*arclength(p)) on p)
randomshifted s) and
((precontrol ((t+1/sketch_segments)*arclength(p)) on p)
randomshifted s) ..
endfor
% TODO: beide Ansätze kombinieren. Eckpunkte erhalten!
%for t = 0 step sketch_length until arclength p:
% (point (arctime t of p) of p) randomshifted s ..
%endfor
if cycle p : % funktioniert nicht
cycle
else :
((point (arclength(p)) on p) randomshifted
s)
%(point (arctime t of p) of p) randomshifted s
fi
else :
p
fi
) enddef ;
%D The macro \type{sketchdraw} draws the randomized path. The
%D \type{expr} ... \type{text} trick is copied from the definition of
%D \type{drawarrow}
def sketchdraw expr p =
do_sketchdraw(p)
enddef;
def do_sketchdraw(expr p) text t =
if (path p) :
for i = 1 upto max(1,sketch_passes) :
normaldraw p
sketchrandomized sketch_amount
withtransparency ("multiply", 1/max(1,sketch_passes))
t ;
endfor;
else :
normaldraw p t;
fi
enddef;
%D The macro \type{sketchfill} randomizes the path before filling it.
def sketchfill expr p =
do_sketchfill(p)
enddef ;
def do_sketchfill(expr p) text t =
if (path p) :
for i = 1 upto max(1,sketch_passes) :
normalfill p
sketchrandomized sketch_amount
withtransparency ("multiply", 1/max(1,sketch_passes))
t ;
endfor;
else :
normalfill p t;
fi
enddef;
picture NoisePattern;
NoisePattern := image(
pickup pencircle xyscaled 0.5bp;
numeric pmax ; pmax := 7 ;
numeric x ; numeric y ;
for i = 1 upto pmax:
for j = 1 upto pmax:
% try to get more dots in the center
x := (i -
[NTG-context] Re: MetaPost lines in tables?
On 2/21/2024 7:47 PM, Henning Hraban Ramm wrote:
Am 21.02.24 um 19:43 schrieb Wolfgang Schuster:
… but it would be visible on a colored background. I’m sure you can
show me a better way…
\startuseMPgraphic{dottedborder}
draw bottomboundary OverlayBox withpen pencircle scaled 2 dashed
withdots withcolor "red";
setbounds currentpicture to OverlayBox;
\stopuseMPgraphic
Thank you!
(I’m sure I already used that somewhere… Must document…)
ok, new feature dedicated to Hraban ... who then of courese has to
document it.
\starttext
\starttabulate
\FL[1,2] % linefactor (old) dashfactor (new)
\NC test \NC test and test and test and done \NC \NR
\ML[1,1]
\NC test \NC test and test and test and done \NC \NR
\NC test \NC test and test and test and done \NC \NR
\NC test \NC test and test and test and done \NC \NR
\LL[1,10]
\stoptabulate
\framed
[align=middle,topframe=dash,frame=off]
{\samplefile{tufte}}
\framed
[align=middle,
frame=dash,
dashstep=.01hs,
rulethickness=1pt]
{\samplefile{tufte}}
\framed
[align=middle,
frame=dash,
dashstep=10pt,
rulethickness=2pt,
background=color,
backgroundcolor=gray]
{\samplefile{tufte}}
\stoptext
-
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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[NTG-context] Re: MetaPost lines in tables?
Am 21.02.24 um 19:43 schrieb Wolfgang Schuster:
… but it would be visible on a colored background. I’m sure you can
show me a better way…
\startuseMPgraphic{dottedborder}
draw bottomboundary OverlayBox withpen pencircle scaled 2 dashed
withdots withcolor "red";
setbounds currentpicture to OverlayBox;
\stopuseMPgraphic
Thank you!
(I’m sure I already used that somewhere… Must document…)
Hraban
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[NTG-context] Re: MetaPost lines in tables?
Henning Hraban Ramm schrieb am 21.02.2024 um 19:04:
Am 19.02.24 um 23:15 schrieb Wolfgang Schuster:
Henning Hraban Ramm schrieb am 19.02.2024 um 22:39:
I guess I asked this a while ago, but I can’t find an answer:
Is it possible to replace the lines of a TABLE with my own MetaPost
graphics?
ATM I’m trying to place my MP lines behind a frame-less TABLE; it
will probably work, but it’s a crutch…
The example below draws a custom border for the whole cell but you're
free to draw only certain sides (leftboundary etc. helps) but don't
forget to set the boundary box for the graphic (OverlayBox is the size
of the cell).
begin example
\startuseMPgraphic{dottedborder}
draw OverlayBox withpen pencircle scaled 2 dashed withdots
withcolor "red";
\stopuseMPgraphic
\defineoverlay[dottedborder][\useMPgraphic{dottedborder}]
\starttext
\bTABLE[frame=off,background=dottedborder]
Thank you!
Since I needed only horizontal lines, I forced the height with an
“invisible“ line:
\startuseMPgraphic{dottedborder}
draw (0,0)--(0,OverlayHeight) withpen pencircle scaled 0.001
withcolor white;
draw (0,0)--(OverlayWidth,0) withpen pencircle scaled 2 dashed
withdots withcolor "red";
\stopuseMPgraphic
… but it would be visible on a colored background. I’m sure you can show
me a better way…
\startuseMPgraphic{dottedborder}
draw bottomboundary OverlayBox withpen pencircle scaled 2 dashed
withdots withcolor "red";
setbounds currentpicture to OverlayBox;
\stopuseMPgraphic
Wolfgang
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[NTG-context] Re: MetaPost lines in tables?
Am 19.02.24 um 23:15 schrieb Wolfgang Schuster:
Henning Hraban Ramm schrieb am 19.02.2024 um 22:39:
I guess I asked this a while ago, but I can’t find an answer:
Is it possible to replace the lines of a TABLE with my own MetaPost
graphics?
ATM I’m trying to place my MP lines behind a frame-less TABLE; it will
probably work, but it’s a crutch…
The example below draws a custom border for the whole cell but you're
free to draw only certain sides (leftboundary etc. helps) but don't
forget to set the boundary box for the graphic (OverlayBox is the size
of the cell).
begin example
\startuseMPgraphic{dottedborder}
draw OverlayBox withpen pencircle scaled 2 dashed withdots withcolor
"red";
\stopuseMPgraphic
\defineoverlay[dottedborder][\useMPgraphic{dottedborder}]
\starttext
\bTABLE[frame=off,background=dottedborder]
Thank you!
Since I needed only horizontal lines, I forced the height with an
“invisible“ line:
\startuseMPgraphic{dottedborder}
draw (0,0)--(0,OverlayHeight) withpen pencircle scaled 0.001
withcolor white;
draw (0,0)--(OverlayWidth,0) withpen pencircle scaled 2 dashed
withdots withcolor "red";
\stopuseMPgraphic
… but it would be visible on a colored background. I’m sure you can show
me a better way…
My real life example (p.2 in https://yemaya.fiee.net/s/DEEHs5m49yftiqW)
involves sketchy lines, and there it’s a bit annoying that the row is
not its own frame that could get a continuous background… Well, it’s
good enough, I’ll settle for it.
Hraban
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[NTG-context] Re: MetaPost lines in tables?
Henning Hraban Ramm schrieb am 19.02.2024 um 22:39:
I guess I asked this a while ago, but I can’t find an answer:
Is it possible to replace the lines of a TABLE with my own MetaPost
graphics?
ATM I’m trying to place my MP lines behind a frame-less TABLE; it will
probably work, but it’s a crutch…
The example below draws a custom border for the whole cell but you're
free to draw only certain sides (leftboundary etc. helps) but don't
forget to set the boundary box for the graphic (OverlayBox is the size
of the cell).
begin example
\startuseMPgraphic{dottedborder}
draw OverlayBox withpen pencircle scaled 2 dashed withdots withcolor
"red";
\stopuseMPgraphic
\defineoverlay[dottedborder][\useMPgraphic{dottedborder}]
\starttext
\bTABLE[frame=off,background=dottedborder]
\bTR
\bTD Hello Table! \eTD
\eTR
\eTABLE
\stoptext
end example
Wolfgang
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