MetaPost

MetaPost是一个程序语言和它的编译器的名字，衍生于高德纳的Metafont。MetaPost擅长通过数学描述制作矢量图，生成的图片为PostScript格式。它的语法来自Metafont。 这个文件example.mp通过MetaPost的编译器编译（在Linux系统中使用mpost命令）之后产生了3个EPS文件： example.1, example.2, example.3。这三个文件就是右边的三张图 transform pagecoords; pagecoords:=identity scaled 10mm shifted (100mm,150mm); beginfig (1) fill ((0,0)--(2,0)--(2,1)--(1,1)--(1,2)--(0,2)--cycle) transformed pagecoords withcolor green; draw ((2,0)..(2,1)..(1,1)..(1,2)..(0,2)) transformed pagecoords; drawarrow ((0,0)--(2,2)) transformed pagecoords; endfig; beginfig (2) draw (for i=0 up to 7: dir (135i)-- endfor cycle) transformed pagecoords; endfig; pagecoords:=identity scaled 15mm shifted (100mm,150mm); beginfig (3); % declare paths to be used path p[],p[]t; % set up points by defining relationships z1=(0,0); z2=z1+2up; z3=z1+whatever*dir (60)=z2+whatever*dir (-50); z4=z3+(-1.5,-.5); z5=z1+dir (135); z0=whatever[z1,z2]=whatever[z3,z4]; % set up paths p0=fullcircle yscaled .5 rotated 45 shifted z0 ; p1=z2—z4..z0..z3---z1; p2=p1 cutbefore p0 cutafter p0; p3=p0 cutbefore p1 cutafter p1; p4=p2—p3—cycle; % define transformed versions of paths and points for i=0 up to 4: p[i]t=p[i] transformed pagecoords; endfor for i=0 up to 5: z[i]t=z[i] transformed pagecoords; endfor % do some drawing fill p4t withcolor (1,1,0.2); draw z1t—z2t withcolor .5white; draw z3t—z4t withcolor .5white; pickup pencircle; draw p0t dashed withdots scaled .3; draw p1t dashed evenly; draw p2t withcolor blue; draw p3t withcolor red; label.lrt (btex $z_0$ etex, z0t); label.llft (btex $z_1$ etex, z1t); label.top (btex $z_2$ etex, z2t); label.rt (btex $z_3$ etex, z3t); label.llft (btex $z_4$ etex, z4t); for i=0 up to 4: drawdot z[i]t withpen pencircle scaled 2; endfor endfig; bye 产生的3个eps文件可以直接用在TeX中（通过LaTeX的\includegraphics命令、ConTeXt的\externalfigure命令、Plain TeX的\epsfbox命令，或者Plain pdftex中来自supp-pdf.tex的\convertMPtoPDF命令。为了看或者打印这三张图片，这些引用是必须的，因为TeX的字体(Metafont)并不包含在MetaPost产生的eps文件中。 自由软件主题 PGF/TikZ MetaFun (modules for Metapost) by Hans Hagen, [1] （页面存档备份，存于互联网档案馆） Donald Knuth: The METAFONTbook, (Computers and Typesetting Volume C) Addison-Wesley 1986. ISBN 0-201-13444-6 Comprehensive TEX Archive Network (CTAN): http://www.ctan.org/ Archive.is的存檔，存档日期2012-12-09. Repository of the TEX source and hundreds of add-ons and style files. (La)TeX Navigator provides 305 simple MetaPost examples: https://web.archive.org/web/20130727021112/http://tex.loria.fr/prod-graph/zoonekynd/metapost/metapost.html Taco Hoekwater: MetaPost developments—autumn 2006 （页面存档备份，存于互联网档案馆）. TUGboat 27:1 (2006). The TeX users group (TUG) http://www.tug.org/ （页面存档备份，存于互联网档案馆） has a page devoted to MetaPost: http://www.tug.org/metapost.html（页面存档备份，存于互联网档案馆） Active development of MetaPost continues at https://web.archive.org/web/20070929092912/http://foundry.supelec.fr/projects/metapost/ Functional MetaPost allows MetaPost to be used from the functional programming language Haskell John D. Hobby has a homepage at https://web.archive.org/web/20131003040005/http://ect.bell-labs.com/who/hobby/index.shtml and some other pages and publications devoted to MetaPost, though these are now a little dated Historic MetaPost homepage: https://web.archive.org/web/20081212090123/http://ect.bell-labs.com/who/hobby/MetaPost.shtml A User's Manual for MetaPost John D. Hobby. Available as a file mpman.ps distributed with MetaPost, or from the Bell Labs web site. Also available in PDF format （页面存档备份，存于互联网档案馆） from CTAN.