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%D \module
%D [ file=mp-luas.lmtx,
%D version=2019.06.23,
%D title=\CONTEXT\ \METAPOST\ graphics,
%D subtitle=\LUA,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
% This is an experimental module where I test some new interface methods;
% for real advanced graphics use the luapost module.
if known context_lmtx : endinput ; fi ;
boolean context_lmtx ; context_lmtx := true ;
presetparameters "grid" [
nx = 1, dx = 1,
ny = 1, dy = 1,
] ;
def lmt_grid = applyparameters "grid" "lmt_do_grid" enddef ;
vardef lmt_do_grid =
image (
save nx; nx := getparameter "grid" "nx" ;
save ny; ny := getparameter "grid" "ny" ;
save dx; dx := getparameter "grid" "dx" ;
save dy; dy := getparameter "grid" "dy" ;
for i = 0 step dx until nx :
draw ((0,0) -- (0,ny)) shifted (i,0) ;
endfor ;
for i = 0 step dy until ny :
draw ((0,0) -- (nx,0)) shifted (0,i) ;
endfor ;
)
enddef ;
def lmt_axis = applyparameters "axis" "lmt_do_axis" enddef ;
presetparameters "axis" [
nx = 1, dx = 1, tx = 0, sx = 1, startx = 0,
ny = 1, dy = 1, ty = 0, sy = 1, starty = 0,
samples = { },
list = { },
connect = false,
list = [ close = false ],
samplecolors = { "" },
axiscolor = "",
textcolor = "",
] ;
% vardef lmt_do_axis =
% image (
% save nx; nx := getparameter "axis" "nx" ;
% save ny; ny := getparameter "axis" "ny" ;
% save dx; dx := getparameter "axis" "dx" ;
% save dy; dy := getparameter "axis" "dy" ;
% save tx; tx := getparameter "axis" "tx" ;
% save ty; ty := getparameter "axis" "ty" ;
% save c, startx, starty ; string c ;
% c := getparameter "axis" "axiscolor" ;
% startx := getparameter "axis" "startx" ;
% starty := getparameter "axis" "starty" ;
% draw (startx,starty) -- (startx,ny) withcolor c ;
% draw (startx,starty) -- (nx,starty) withcolor c ;
% for i = 0 step dx until nx :
% if (i > startx) or (startx = 0) :
% draw ((0,0) -- (0,-2)) shifted (i,starty) withcolor c ;
% fi ;
% endfor ;
% for i = 0 step dy until ny :
% if (i > starty) or (starty = 0) :
% draw ((0,0) -- (-2,0)) shifted (startx,i) withcolor c ;
% fi ;
% endfor ;
% if tx <> 0 :
% c := getparameter "axis" "textcolor" ;
% for i = 0 step tx until nx :
% if (i > startx) or (startx = 0) :
% draw
% textext("\strut " & decimal i) ysized 2 shifted (i,-4+starty)
% withcolor c;
% fi ;
% endfor ;
% fi ;
% if ty <> 0 :
% c := getparameter "axis" "textcolor" ;
% for i = 0 step ty until ny :
% if (i > starty) or (starty = 0) :
% draw
% textext.lft("\strut " & decimal i) ysized 2 shifted (-3+startx,i)
% withcolor c;
% fi ;
% endfor ;
% fi ;
%
% if (getparametercount "axis" "samples") > 0 :
% if getparameter "axis" "connect" :
% for s = 1 upto getparametercount "axis" "samples" :
% c := getparameter "axis" "samplecolors" s ;
% draw for i = 1 upto getparametercount "axis" "samples" s :
% if (i > 1) : -- fi (i, getparameter "axis" "samples" s i)
% endfor
% withcolor c ;
% endfor ;
% else :
% for s = 1 upto getparametercount "axis" "samples" :
% c := getparameter "axis" "samplecolors" s ;
% for i = 1 upto getparametercount "axis" "samples" s :
% draw (i, getparameter "axis" "samples" s i)
% withcolor c ;
% endfor ;
% endfor ;
% fi ;
% fi ;
%
% if (getparametercount "axis" "list") > 0 :
%
% path p ; numeric ts ; pair a, d ;
%
% ts := (getparameter "axis" "sy") / 20 ;
%
% for s = 1 upto getparametercount "axis" "list" :
%
% c := getparameter "axis" "list" s "color" ;
%
% p := for i = 1 upto getparametercount "axis" "list" s "points" :
% if (i > 1) : -- fi (getparameter "axis" "list" s "points" i)
% endfor
% if (getparameterdefault "axis" "list" s "close" false) : -- cycle fi ;
%
% draw p withcolor c ;
%
% if (getparametercount "axis" "list" s "labels") > 0 :
% for i = 1 upto getparametercount "axis" "list" s "labels" :
% draw
% textext(getparameterdefault "axis" "list" s "labels" i "")
% ysized ts
% shifted unitvector(direction (i-eps) of p) % todo
% shifted point i of p ;
% endfor ;
% fi ;
%
% % if (getparametercount "axis" "list" s "texts") > 0 :
% % for i = 1 upto getparametercount "axis" "list" s "texts" :
% % n := i + 0.5 ;
% % a := point n of p ;
% % d := direction n of p ;
% % draw textext.d(getparameterdefault "axis" "list" s "texts" i "")
% % if d < left : rotated 180 shifted (0,-5) else : shifted (0,5) fi
% % ysized ts
% % shifted a
% % rotatedaround(a,angle(d)) ;
% % endfor ;
% % fi ;
%
% pushparameters "axis" "list" s "texts" ;
% if (getparametercount) > 0 :
% for i = 1 upto getparametercount :
% n := i + 0.5 ;
% a := point n of p ;
% d := direction n of p ;
% draw textext.d(getparameterdefault i "")
% if d < left : rotated 180 shifted (0,-5) else : shifted (0,5) fi
% ysized ts
% shifted a
% rotatedaround(a,angle(d)) ;
% endfor ;
% fi ;
% popparameters ;
%
% endfor ;
% fi ;
%
% )
% xyscaled(getparameter "axis" "sx",getparameter "axis" "sy")
% enddef ;
vardef lmt_do_axis =
image (
pushparameters "axis" ;
save nx; nx := getparameter "nx" ;
save ny; ny := getparameter "ny" ;
save dx; dx := getparameter "dx" ;
save dy; dy := getparameter "dy" ;
save tx; tx := getparameter "tx" ;
save ty; ty := getparameter "ty" ;
save c, startx, starty ; string c ;
c := getparameter "axiscolor" ;
startx := getparameter "startx" ;
starty := getparameter "starty" ;
draw (startx,starty) -- (startx,ny) withcolor c ;
draw (startx,starty) -- (nx,starty) withcolor c ;
for i = 0 step dx until nx :
if (i > startx) or (startx = 0) :
draw ((0,0) -- (0,-2)) shifted (i,starty) withcolor c ;
fi ;
endfor ;
for i = 0 step dy until ny :
if (i > starty) or (starty = 0) :
draw ((0,0) -- (-2,0)) shifted (startx,i) withcolor c ;
fi ;
endfor ;
if tx <> 0 :
c := getparameter "textcolor" ;
for i = 0 step tx until nx :
if (i > startx) or (startx = 0) :
draw
textext("\strut " & decimal i) ysized 2 shifted (i,-4+starty)
withcolor c;
fi ;
endfor ;
fi ;
if ty <> 0 :
c := getparameter "textcolor" ;
for i = 0 step ty until ny :
if (i > starty) or (starty = 0) :
draw
textext.lft("\strut " & decimal i) ysized 2 shifted (-3+startx,i)
withcolor c;
fi ;
endfor ;
fi ;
if (getparametercount "samples") > 0 :
if getparameter "connect" :
for s = 1 upto getparametercount "samples" :
c := getparameter "samplecolors" s ;
draw for i = 1 upto getparametercount "samples" s :
if (i > 1) : -- fi (i, getparameter "samples" s i)
endfor
withcolor c ;
endfor ;
else :
for s = 1 upto getparametercount "samples" :
c := getparameter "samplecolors" s ;
for i = 1 upto getparametercount "samples" s :
draw (i, getparameter "samples" s i)
withcolor c ;
endfor ;
endfor ;
fi ;
fi ;
if (getparametercount "list") > 0 :
path p ; numeric ts ; pair a, d ;
ts := (getparameter "sy") / 20 ;
pushparameters "list" ;
for s = 1 upto getparametercount :
pushparameters s ;
c := getparameter "color" ;
% p := for i = 1 upto getparametercount "points":
% if (i > 1) : -- fi (getparameter "points" i)
% endfor
% if (getparameterdefault "close" false) : -- cycle fi ;
% this can become:
% p := if (getparameterdefault "close" false) :
% % getparameterpath "points" "--" true ;
% getparameterpath "points" true ;
% else :
% % getparameterpath "points" "--" false ;
% getparameterpath "points" ;
% fi ;
% p := getparameterpath "points" if (getparameterdefault "close" false) : true fi ;
p := getparameterpath "points" (getparameterdefault "close" false) ;
% p := getparameterpath "points" getparameterdefault "close" false ;
draw p withcolor c ;
pushparameters "labels" ;
if (getparametercount) > 0 :
for i = 1 upto getparametercount:
n := i - 1 ;
a := point n of p ;
d := direction n of p ;
draw
textext(getparametertext i true)
ysized ts
shifted (a + .5 * unitvector(d) rotated 90) ;
endfor ;
fi ;
popparameters ;
pushparameters "texts" ;
if (getparametercount) > 0 :
for i = 1 upto getparametercount :
n := i + 0.5 ;
a := point n of p ;
d := direction n of p ;
draw textext.d(getparametertext i true)
if d < left : rotated 180 shifted (0,-5) else : shifted (0,5) fi
ysized ts
shifted a
rotatedaround(a,angle(d)) ;
endfor ;
fi ;
popparameters ;
popparameters ;
endfor ;
popparameters ;
fi ;
popparameters ;
)
xyscaled(getparameter "axis" "sx",getparameter "axis" "sy")
enddef ;
presetparameters "outline" [
content = "",
kind = "draw",
fillcolor = "",
drawcolor = "",
rulethickness = 1/10,
align = "",
style = "",
width = 0,
] ;
def lmt_outline = applyparameters "outline" "lmt_do_outline" enddef ;
vardef lmt_do_outline =
image ( normaldraw image (
save kind ; string kind ; kind := getparameter "outline" "kind" ;
save align ; string align ; align := getparameter "outline" "align" ;
save style ; string style ; style := getparameter "outline" "style" ;
save width ; numeric width ; width := getparameter "outline" "width" ;
if kind = "draw" :
kind := "d" ;
elseif kind = "fill" :
kind := "f" ;
elseif kind = "both" :
kind := "b" ;
elseif kind = "reverse" :
kind := "r" ;
fi ;
currentoutlinetext := currentoutlinetext + 1 ;
lua.mp.mf_outline_text(
currentoutlinetext,
if align = "" :
getparameter "outline" "content",
else :
"\framed[align={" & align & "}"
if width > 0 :
& ",width=" & decimal width & "bp"
fi
if style <> "" :
& ",foregroundstyle=" & style
fi
& ",offset=none,frame=off]{"
& (getparameter "outline" "content")
& "}",
fi,
kind
) ;
save currentpen; pen currentpen ;
pickup pencircle scaled getparameter "outline" "rulethickness" ;
if kind = "f" :
mfun_do_outline_text_set_f (
withcolor getparameter "outline" "fillcolor"
);
elseif kind = "d" :
mfun_do_outline_text_set_d (
withcolor getparameter "outline" "drawcolor"
);
elseif kind = "b" :
mfun_do_outline_text_set_b (
withcolor getparameter "outline" "fillcolor"
) (
withcolor getparameter "outline" "drawcolor"
);
elseif kind = "u" :
mfun_do_outline_text_set_f (
withcolor getparameter "outline" "fillcolor"
);
elseif kind = "r" :
mfun_do_outline_text_set_r (
withcolor getparameter "outline" "drawcolor"
) (
withcolor getparameter "outline" "fillcolor"
) ;
elseif kind = "p" :
mfun_do_outline_text_set_p ;
else :
mfun_do_outline_text_set_n (
% what to use here
);
fi ;
lua.mp.mf_get_outline_text(currentoutlinetext) ;
) )
enddef ;
presetparameters "followtext" [
content = "",
spread = true,
trace = false,
reverse = false,
autoscaleup = "no",
autoscaledown = "no",
path = (fullcircle),
] ;
def lmt_followtext = applyparameters "followtext" "lmt_do_followtext" enddef ;
vardef lmt_do_followtext =
image (
save s_u ; string s_u ; s_u := getparameter "followtext" "autoscaleup" ;
save s_d ; string s_d ; s_d := getparameter "followtext" "autoscaledown" ;
save followtextalternative ; followtextalternative := if getparameter "followtext" "spread" : 1 else : 0 fi ;
save tracingfollowtext ; tracingfollowtext := if getparameter "followtext" "trace" : 1 else : 0 fi ;
save autoscaleupfollowtext ; autoscaleupfollowtext := if s_u = "yes" : 1 elseif s_u = "max" : 2 else : 0 fi ;
save autoscaledownfollowtext ; autoscaledownfollowtext := if s_d = "yes" : 1 elseif s_d = "max" : 2 else : 0 fi ;
draw followtext (
if (getparameter "followtext" "reverse") : reverse fi getparameter "followtext" "path",
getparameter "followtext" "content"
) ;
)
enddef ;
presetparameters "arrow" [
path = origin,
kind = "fill",
dimple = 1/5,
scale = 3/4,
length = 4,
angle = 45,
location = "end", % middle both
alternative = "normal", % dimpled curved
percentage = 50,
headonly = false,
] ;
def lmt_arrow = applyparameters "arrow" "lmt_do_arrow" enddef ;
vardef lmt_do_arrow =
image (
save a ; string a ; a := getparameter "arrow" "alternative" ;
save l ; string l ; l := getparameter "arrow" "location" ;
save k ; string k ; k := getparameter "arrow" "kind" ;
save p ; path p ; p := getparameter "arrow" "path" ;
save ahvariant ; ahvariant := if a = "dimpled" : 1 elseif a = "curved" : 2 else : 0 fi ;
save ahdimple ; ahdimple := getparameter "arrow" "dimple" ;
save ahscale ; ahscale := getparameter "arrow" "scale" ;
save ahangle ; ahangle := getparameter "arrow" "angle" ;
save ahlength ; ahlength := getparameter "arrow" "length" ;
if not getparameter "arrow" "headonly" :
draw p ;
fi ;
if k = "draw" : draw elseif k = "both" : filldraw else : fill fi
if l = "middle" :
midarrowhead p ;
elseif l = "percentage" :
arrowheadonpath (p, (getparameter "arrow" "percentage")/100) ;
elseif l = "both" :
arrowhead p ;
if k = "draw" : draw elseif k = "both" : filldraw else : fill fi
arrowhead reverse p ;
else :
arrowhead p ;
fi ;
)
enddef ;
% from dum
presetparameters "placeholder" [
color = "red",
width = 1,
height = 1,
reduction = 0,
alternative = "circle",
] ;
def lmt_placeholder = applyparameters "placeholder" "lmt_do_placeholder" enddef ;
def lmt_do_placeholder =
begingroup ;
save w, h, d, r, p, c, b, s, q, a ;
numeric w, h, d, r ; path p ; string s, a ;
s := getparameter "placeholder" "color" ;
w := getparameter "placeholder" "width" ;
h := getparameter "placeholder" "height" ;
r := getparameter "placeholder" "reduction" ;
a := getparameter "placeholder" "alternative" ;
d := max(w,h) ;
if cmykcolor resolvedcolor(s) :
cmykcolor c, b ; b := (0,0,0,0)
else :
color c, b ; b := (1,1,1)
fi ;
c := resolvedcolor(s) ;
p := unitsquare xyscaled (w,h) ;
fill p withcolor r[.5c,b] ;
if a = "square" :
vardef q = fullsquare enddef ;
elseif a = "triangle" :
vardef q = fulltriangle rotated (90 * round(uniformdeviate(4))) enddef ;
else :
vardef q = fullcircle enddef ;
fi ;
for i := 1 upto 60 :
fill q
scaled (d/5 randomized (d/5))
shifted (center p randomized (d))
withcolor r[c randomized(.3,.9),b] ;
endfor ;
clip currentpicture to p ;
endgroup ;
enddef ;
% maybe:
vardef lmt_connected(text t) =
save p ; path p ;
p := origin t ;
subpath (1,length(p)) of p
enddef;
def lmt_connection expr t =
-- t
enddef;
|
