relocate context-gantt

git-svn-id: svn://tug.org/texlive/trunk@23789 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 64 insertions, 0 deletions

diff --git a/Master/texmf-dist/metapost/context/third/gantt/mp-hatching.mp b/Master/texmf-dist/metapost/context/third/gantt/mp-hatching.mp
new file mode 100644
index 00000000000..af86e19d2b6
--- /dev/null
+++ b/Master/texmf-dist/metapost/context/third/gantt/mp-hatching.mp
@@ -0,0 +1,64 @@
+%%% addto clip hatchfill hatchfill_
+%%% numeric color
+%%% length withcolor
+% This is HATCHING.MP file defining a set of METAPOST macros for
+% hatching interior of closed paths.
+%
+% Made in BOP, Gda\'nsk, Poland
+% E-mail contact: B.Jackowski@gust.org.pl
+% Public domain software (no copyrights, copylefts, copyups, copydowns, etc.)
+% Current version: 11.07.2000 -- ver 0.1 (pre-release)
+% Current version: 21.09.2000 -- ver 0.11 (ending semicolon
+%    added in |extra_beginfig|; |hatchfill_| introduced in order
+%    to make possible something like |def fill = hatchfill enddef|
+def hatchfill_ expr c = addto currentpicture contour c _op_ enddef;
+
+vardef hatchfill text p =
+ save c_,p_; path p_; color c_[\\]; c_.num:=0;
+ save withcolor_; let withcolor_:=withcolor;
+ def withcolor = ; c_[incr c_.num]:= enddef;
+ p_:=p; let withcolor:=withcolor_;
+ for i_:=c_.num downto 1: % find the least ``true'' fill
+  c_.num':=i_; exitif bluepart(c_[i_])>0;
+ endfor
+ if c_.num>0:
+  for i_:=c_.num' upto c_.num:
+   if bluepart(c_[i_])<0: draw hatched(p_)c_[i_];
+   else: hatchfill_ p_ withcolor c_[i_]; fi
+  endfor
+ else: hatchfill_ p_; fi
+enddef;
+
+vardef hatched(expr o) primary c =
+ save a_, b_, d_, l_, i_, r_, za_, zb_, zc_, zd_;
+ path b_; picture r_; pair za_, zb_, zc_, zd_;
+ r_:=image(
+  a_:=redpart(c) mod 180; l_:=greenpart(c); d_:=-bluepart(c);
+  b_:=o rotated -a_;
+  b_:=if a_>=90: (lrcorner b_--llcorner b_--ulcorner b_--urcorner b_--cycle)
+   else: (llcorner b_--lrcorner b_--urcorner b_--ulcorner b_--cycle) fi
+   rotated a_;
+  za_:=point 0 of b_; zb_:=point 1 of b_;
+  zc_:=point 2 of b_; zd_:=point 3 of b_;
+  if hatch_match>0:
+   n_:=round(length(zd_-za_)/l_); if n_<2: n_:=2; fi; l_:=length(zd_-za_)/n_;
+  else: n_:=length(zd_-za_)/l_; fi
+  % show (greenpart(c), l_);
+  for i_:=if hatch_match>0: 1 else: 0 fi upto ceiling n_-1:
+   draw_hatched_band((i_/n_)[zd_,za_],(i_/n_)[zc_,zb_],a_,l_,d_);
+  endfor
+ );
+ clip r_ to o; r_
+enddef;
+
+def draw_hatched_band(expr za,zb,a,l,d) = % normally, |a| and |l| are ignored
+ draw za--zb withpen pencircle scaled d _hop_;
+enddef;
+
+def hatchoptions(text t) = def _hop_ = t enddef enddef;
+
+newinternal hatch_match; hatch_match:=1;
+hatchoptions(); extra_beginfig:=extra_beginfig & ";hatchoptions();";
+
+endinput
+%%\end