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authorKarl Berry <karl@freefriends.org>2014-04-16 21:50:22 +0000
committerKarl Berry <karl@freefriends.org>2014-04-16 21:50:22 +0000
commit712e18adbc3a3747f8baa04df86593602cc032e6 (patch)
treead001706d85bdc5a5f045e712cd6e6b31d6b7cfb /Master/texmf-dist/scripts/placeat
parentf96c6f3b55f5a86a5f9dd5dbfe6422c72d1b4b8e (diff)
placeat (16apr14)
git-svn-id: svn://tug.org/texlive/trunk@33467 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/scripts/placeat')
-rwxr-xr-xMaster/texmf-dist/scripts/placeat/placeat.lua152
1 files changed, 152 insertions, 0 deletions
diff --git a/Master/texmf-dist/scripts/placeat/placeat.lua b/Master/texmf-dist/scripts/placeat/placeat.lua
new file mode 100755
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+++ b/Master/texmf-dist/scripts/placeat/placeat.lua
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+--
+-- This is file `placeat.lua',
+-- generated with the docstrip utility.
+--
+-- The original source files were:
+--
+-- placeat.dtx (with options: `lua')
+--
+-- EXPERIMENTAL CODE
+--
+-- This package is copyright © 2014 Arno L. Trautmann. It may be distributed and/or
+-- modified under the conditions of the LaTeX Project Public License, either version 1.3c
+-- of this license or (at your option) any later version. This work has the LPPL mainten-
+-- ance status ‘maintained’.
+function pdf_print (...)
+ for _, str in ipairs({...}) do
+ pdf.print(str .. " ")
+ end
+ pdf.print("\n")
+end
+
+function move (p1,p2)
+ if (p2) then
+ pdf_print(p1,p2,"m")
+ else
+ pdf_print(p1[1],p1[2],"m")
+ end
+end
+
+function line (p1,p2)
+ pdf_print(p1,p2,"l")
+end
+
+function curve(p11,p12,p21,p22,p31,p32)
+ if (p22) then
+ p1,p2,p3 = {p11,p12},{p21,p22},{p31,p32}
+ else
+ p1,p2,p3 = p11,p12,p21
+ end
+ pdf_print(p1[1], p1[2],
+ p2[1], p2[2],
+ p3[1], p3[2], "c")
+end
+
+function linewidth (w)
+ pdf_print(w,"w")
+end
+
+function stroke ()
+ pdf_print("S")
+end
+
+-- welp, let's have some fun!
+-- with the function radd, a random coordinate change is added if used
+-- randfact will adjust the amount of randomization
+-- everything is relative in the grid size
+-- BUT: In fact, do we really want to have wiggly lines? …
+local randfact = 100
+local radd = function()
+ return (math.random()-0.5)*randfact
+end
+
+function placelineat(x1,y1,x2,y2)
+ xfac = tex.pagewidth/gridnrx/65536 -- factors to convert given number to absolute coordinates
+ yfac = tex.pageheight/gridnry/65536 -- should both be global!
+ xar = (x2-x1)*xfac -- end point of the arrow
+ yar = (y2-y1)*yfac --
+ move(0,0) -- start
+ line(xar,yar) -- draw main line
+ stroke()
+end
+
+function placearrowat(x1,y1,x2,y2)
+ xfac = tex.pagewidth/gridnrx/65536 -- factors to convert given number to absolute coordinates
+ yfac = tex.pageheight/gridnry/65536 -- should both be global!
+ xar = (x2-x1)*xfac -- end point of the arrow
+ yar = (y2-y1)*yfac --
+ parx = xar/math.sqrt(xar^2+yar^2) -- direction of the arrow
+ pary = yar/math.sqrt(xar^2+yar^2) --
+ perpx = -pary -- perp of the arrow direction
+ perpy = parx --
+ move(0,0) -- start
+ line(xar,yar) -- draw main line
+ move(xar,yar)
+ line(xar-5*parx+5*perpx,yar-5*pary+5*perpy) -- draw arrowhead
+ move(xar,yar)
+ line(xar-5*parx-5*perpx,yar-5*pary-5*perpy)
+ stroke()
+end
+
+-- better circle-approximation by using quarter circles, according to wikipedia article about Bézier curves
+function placecircleat(radius)
+ local k = 0.55228
+ local P0,P1,P2,P3
+
+ P0 = {radius,0} P1 = {radius,radius*k}
+ P2 = {radius*k,radius} P3 = {0,radius}
+
+ move (P0[1],P0[2]) curve (P1,P2,P3)
+
+ P0 = {-radius,0} P1 = {-radius,radius*k}
+ P2 = {-radius*k,radius} P3 = {0,radius}
+
+ move (P0[1],P0[2]) curve (P1,P2,P3)
+
+ P0 = {-radius,0} P1 = {-radius,-radius*k}
+ P2 = {-radius*k,-radius} P3 = {0,-radius}
+
+ move (P0[1],P0[2]) curve (P1,P2,P3)
+
+ P0 = {radius,0} P1 = {radius,-radius*k}
+ P2 = {radius*k,-radius} P3 = {0,-radius}
+
+ move (P0[1],P0[2]) curve (P1,P2,P3)
+ stroke()
+end
+
+function placesquareat(length)
+ move (-length,-length)
+ line ( length,-length)
+ line ( length, length)
+ line (-length, length)
+ line (-length,-length)
+ stroke()
+end
+
+function placerectangleat(x1,y1,x2,y2)
+ xfac = tex.pagewidth/gridnrx/65536
+ yfac = tex.pageheight/gridnry/65536
+ x2 = (x2-x1)*xfac
+ y2 = (y2-y1)*yfac
+ move(0,0)
+ line(x2,0)
+ line(x2,y2)
+ line(0,y2)
+ line(0,0)
+ stroke()
+end
+
+function placefilledrectangleat(x1,y1,x2,y2)
+ xfac = tex.pagewidth/gridnrx/65536
+ yfac = tex.pageheight/gridnry/65536/1.0035 -- well, yes. Another random factor. lalala
+ x2 = (x2-x1)*xfac
+ y2 = (y2-y1)*yfac
+ linewidth(y2)
+ move(0,y2/2)
+ line(x2,y2/2)
+ stroke()
+ linewidth(1)
+end
+--
+-- End of File `placeat.lua'.