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authorKarl Berry <karl@freefriends.org>2017-08-21 20:44:33 +0000
committerKarl Berry <karl@freefriends.org>2017-08-21 20:44:33 +0000
commit628c275dde621846d34bf7d180995a91efa1c631 (patch)
treece7899cc51975a0a500f8efd5aeba5243c68d52c /Master/texmf-dist/scripts
parent461d66c062a616f36e5e3e5e51497596acf2086e (diff)
placeat (21aug17)
git-svn-id: svn://tug.org/texlive/trunk@45087 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/scripts')
-rwxr-xr-xMaster/texmf-dist/scripts/placeat/placeat.lua86
1 files changed, 48 insertions, 38 deletions
diff --git a/Master/texmf-dist/scripts/placeat/placeat.lua b/Master/texmf-dist/scripts/placeat/placeat.lua
index 69db376aa35..898ff9a3ca7 100755
--- a/Master/texmf-dist/scripts/placeat/placeat.lua
+++ b/Master/texmf-dist/scripts/placeat/placeat.lua
@@ -8,7 +8,7 @@
--
-- EXPERIMENTAL CODE
--
--- This package is copyright © 2014 Arno L. Trautmann. It may be distributed and/or
+-- This package is copyright © 2017 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’.
@@ -27,7 +27,7 @@ function move (p1,p2)
end
end
-function line (p1,p2)
+function line(p1,p2)
pdf_print(p1,p2,"l")
end
@@ -42,11 +42,15 @@ function curve(p11,p12,p21,p22,p31,p32)
p3[1], p3[2], "c")
end
-function linewidth (w)
+function linewidth(w)
pdf_print(w,"w")
end
-function stroke ()
+function fill()
+ pdf_print("f")
+end
+
+function stroke()
pdf_print("S")
end
@@ -64,7 +68,7 @@ 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 --
+ yar = (y1-y2)*yfac --
move(0,0) -- start
line(xar,yar) -- draw main line
stroke()
@@ -74,7 +78,7 @@ 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 --
+ yar = (y1-y2)*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
@@ -82,36 +86,37 @@ function placearrowat(x1,y1,x2,y2)
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
+ line(xar-arrowheadlength*parx+arrowheadlength*perpx,yar-arrowheadlength*pary+arrowheadlength*perpy) -- draw arrowhead
move(xar,yar)
- line(xar-5*parx-5*perpx,yar-5*pary-5*perpy)
+ line(xar-arrowheadlength*parx-arrowheadlength*perpx,yar-arrowheadlength*pary-arrowheadlength*perpy)
stroke()
end
-- better circle-approximation by using quarter circles, according to wikipedia article about Bézier curves
-function placecircleat(radius)
- local k = 0.55228
+-- k = 1 gives a circle, everything else something else …
+function placecircleat(r,k,filled)
local P0,P1,P2,P3
+ r = r * 59.5 -- next arbitrary scale factor; the circle has radius "1" in x-units
+ local rk = 0.55228*r*k
- P0 = {radius,0} P1 = {radius,radius*k}
- P2 = {radius*k,radius} P3 = {0,radius}
-
- move (P0[1],P0[2]) curve (P1,P2,P3)
+ P0 = {r,0}
+ move (P0[1],P0[2])
- P0 = {-radius,0} P1 = {-radius,radius*k}
- P2 = {-radius*k,radius} P3 = {0,radius}
+ P1 = {r,rk} P2 = {rk,r} P3 = {0,r}
+ curve (P1,P2,P3)
- move (P0[1],P0[2]) curve (P1,P2,P3)
+ P1 = {-rk,r} P2 = {-r,rk} P3 = {-r,0}
+ curve (P1,P2,P3)
- P0 = {-radius,0} P1 = {-radius,-radius*k}
- P2 = {-radius*k,-radius} P3 = {0,-radius}
+ P1 = {-r,-rk} P2 = {-rk,-r} P3 = {0,-r}
+ curve (P1,P2,P3)
- move (P0[1],P0[2]) curve (P1,P2,P3)
+ P1 = {rk,-r} P2 = {r,-rk} P3 = {r,0}
+ 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)
+ if filled then
+ fill()
+ end
stroke()
end
@@ -124,29 +129,34 @@ function placesquareat(length)
stroke()
end
-function placerectangleat(x1,y1,x2,y2)
+function placecurveat(x1,y1,x2,y2,x3,y3,x4,y4) -- start point and three numbers. Start is only offset.
+ xfac = tex.pagewidth/gridnrx/65536 -- factors to convert given number to absolute coordinates
+ yfac = tex.pageheight/gridnry/65536 -- should both be global!
+ x2 = (x2-x1)*xfac
+ y2 = (y2-y1)*yfac
+ x3 = (x3-x1)*xfac
+ y3 = (y3-y1)*yfac
+ x4 = (x4-x1)*xfac
+ y4 = (y4-y1)*yfac
+ move(0,0) -- start
+ curve(x2,-y2,x3,-y3,x4,-y4) -- coordinates for Bezier curve
+ stroke()
+end
+
+function placerectangleat(x1,y1,x2,y2,filled)
xfac = tex.pagewidth/gridnrx/65536
yfac = tex.pageheight/gridnry/65536
x2 = (x2-x1)*xfac
- y2 = (y2-y1)*yfac
+ y2 = (y1-y2)*yfac
move(0,0)
line(x2,0)
line(x2,y2)
line(0,y2)
line(0,0)
+ if filled then
+ fill()
+ end
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'.