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\input miniltx
\input color
\definecolor{orange}{rgb}{1,0.5,0}
\input luamplib.sty
\everymplib{ beginfig(0); }\everyendmplib{ endfig; }
\tracingcommands1
A%
\mplibcode
%% test all printable ascii chars in comments
%% ( 2 < F P Z d n x
%% ) 3 = G Q [ e o y
%% * 4 > H R \ f p z
%% ! + 5 ? I S ] g q {
%% " , 6 @ J T ^ h r |
%% # - 7 A K U _ i s }
%% $ . 8 B L V ` j t ~
%% % / 9 C M W a k u DEL
%% & 0 : D N X b l v
%% ´ 1 ; E O Y c m w
fill fullcircle scaled 20;
\endmplibcode
B\par
\everymplib{}\everyendmplib{}% reset toks
A%
\mplibcode
verbatimtex \lower.2em etex
beginfig(0);
draw origin--(1cm,0) withcolor red;
draw btex g etex withcolor blue;
draw btex\tracingcommands0 multi
line
tex code
100 \% color
etex shifted (20,0);
draw textext("\tracingcommands0 textext 50\% color") shifted (10,-10) withcolor .5white;
draw bbox currentpicture;
endfig;
beginfig(18);
numeric u;
u = 1cm;
draw (0,2u)--(0,0)--(4u,0);
pickup pencircle scaled 1pt;
draw (0,0){up}
for i=1 upto 8: ..(i/2,sqrt(i/2))*u endfor;
label.lrt(btex $\sqrt x$ etex, (3,sqrt 3)*u);
label.bot(btex $x$ etex, (2u,0));
label.lft(btex $y$ etex, (0,u));
endfig;
\endmplibcode
B\par
A%
\mplibcode
beginfig(2);
numeric u; u=1cm;
z1=-z2=(-u,0);
for i = 1 upto 3:
draw z1..(0, i*u)..z2;
label.top(TEX("$e_{" & decimal(i) & "}$"), (0, i*u)) withcolor \mpcolor{orange};
endfor;
endfig;
\endmplibcode
B\par
\mplibsetformat{metafun}%
\mplibcode
verbatimtex \moveright 0.4\hsize etex
beginfig(0);
path p; p:= fullcircle scaled 2cm yshifted .5cm;
fill p withcolor transparent("normal", 0.5, red);
fill p rotated 120 withcolor transparent("normal", 0.5, green);
fill p rotated 240 withcolor transparent("normal", 0.5, blue);
endfig;
verbatimtex \leavevmode etex
picture p; p := btex MetaPost etex scaled 2;
beginfig(1);
linear_shade(bbox p,0,blue,.7white);
draw p withcolor white;
endfig;
verbatimtex \kern10pt etex
beginfig(2);
circular_shade(bbox p,0,blue,.7white);
draw p withcolor white;
endfig;
\endmplibcode
\newbox\mympbox
\mplibcode
verbatimtex \global\setbox\mympbox etex
beginfig(0);
breadth=.667\mpdim\hsize;
height=2pt;
x1=0; x2=x6=.333x4; x5=x3=.667x4;
x4=breadth;
y1=y4=height/2; y2=y3=height; y5=y6=0;
fill z1--z2--z3--z4--z5--z6--cycle;
endfig;
\endmplibcode
\copy\mympbox
\copy\mympbox
\copy\mympbox
\copy\mympbox
\mplibnumbersystem{double}%
\mplibcode
beginfig(0);
u := 10**5*(10**-4);
draw unitsquare scaled u;
endfig;
\endmplibcode
\mplibsetformat{plain}%
\mplibcode
input graph;
beginfig(0);
draw begingraph(100,100);
gdraw (10,10)--(30,35)--(50,25)--(70,80)--(90,90);
autogrid(otick.bot,);
for y=20,40,60,80:
grid.lft(format("%e",1000y), y) withcolor .85white;
endfor
endgraph;
endfig;
\endmplibcode
\mplibtextextlabel{enable}%
\mplibcode
beginfig(0);
dotlabel.rt("$\sqrt2$",origin);
endfig;
\endmplibcode
\leavevmode
\mplibcode
D := sqrt(2)**7;
beginfig(0);
draw fullcircle scaled D;
VerbatimTeX("\gdef\Dia{" & decimal D & "}");
endfig;
\endmplibcode
diameter:\Dia bp.%
\mplibcode
vardef rotatedlabel@#(expr str, loc, angl) =
draw thelabel@#(str, loc) rotatedaround(loc, angl)
enddef;
beginfig(1);
rotatedlabel.top(textext("Rotated!"), origin, 45);
endfig;
\endmplibcode
\bye
|
