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authorKarl Berry <karl@freefriends.org>2016-02-15 22:09:51 +0000
committerKarl Berry <karl@freefriends.org>2016-02-15 22:09:51 +0000
commit7a71974f40b3428a65dd3a30deb8f34b865b22f6 (patch)
treecc2bdc99327f49f3abe7f4459fd2a9d12d8fd1b5 /Master/texmf-dist/metapost/mparrows
parent05a82e7a677f0d89489d237fd08ff5ba2bfa34ec (diff)
mparrows (15feb16)
git-svn-id: svn://tug.org/texlive/trunk@39729 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/metapost/mparrows')
-rw-r--r--Master/texmf-dist/metapost/mparrows/mparrows.mp170
1 files changed, 170 insertions, 0 deletions
diff --git a/Master/texmf-dist/metapost/mparrows/mparrows.mp b/Master/texmf-dist/metapost/mparrows/mparrows.mp
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+% Public domain.
+% Created 2012-2016, Palle Joergensen, hamselv(at)pallej.dk
+
+numeric barbedarrowindent; barbedarrowindent:=.75;
+
+let drawarrow_orig = drawarrow;
+let drawdblarrow_orig = drawdblarrow;
+
+def drawarrow_default expr p = _apth:=p; _finarr_default enddef;
+def drawarrow_default_unfilled expr p = _apth:=p; _finarr_default_unfilled enddef;
+def drawarrow_default_sharp expr p = _apth:=p; _finarr_default_sharp enddef;
+def drawarrow_barbed expr p = _apth:=p; _finarr_barbed enddef;
+def drawarrow_barbed_unfilled expr p = _apth:=p; _finarr_barbed_unfilled enddef;
+def drawarrow_barbed_sharp expr p = _apth:=p; _finarr_barbed_sharp enddef;
+def drawarrow_open expr p = _apth:=p; _finarr_open enddef;
+
+def drawdblarrow_default expr p = _apth:=p; _findarr_default enddef;
+def drawdblarrow_default_unfilled expr p = _apth:=p; _findarr_default_unfilled enddef;
+def drawdblarrow_default_sharp expr p = _apth:=p; _findarr_default_sharp enddef;
+def drawdblarrow_barbed expr p = _apth:=p; _findarr_barbed enddef;
+def drawdblarrow_barbed_unfilled expr p = _apth:=p; _findarr_barbed_unfilled enddef;
+def drawdblarrow_barbed_sharp expr p = _apth:=p; _findarr_barbed_sharp enddef;
+def drawdblarrow_open expr p = _apth:=p; _findarr_open enddef;
+
+vardef arrowhead_default expr p = %% For default like arrow heads
+ save q,r,e,s;
+ path q,r,s; pair e;
+ e = point length p of p;
+ q = gobble(p shifted -e cutafter makepath(pencircle scaled 2ahlength)) cuttings;
+ r = ((q rotated .5ahangle)--(reverse q rotated -.5ahangle)--cycle) shifted e;
+ s = (point length r of r)--(point (length r-1) of r);
+ _apth:= gobble(_apth cutbefore s) cuttings;
+ r
+enddef;
+
+vardef arrowhead_barbed expr p = %% For barbed arrow heads
+ save q,e,f,r;
+ path q,r; pair e,f;
+ e = point length p of p;
+ f = (p shifted -e) intersectionpoint (makepath(pencircle scaled (barbedarrowindent*2*ahlength)));
+ q = gobble(p shifted -e cutafter makepath(pencircle scaled 2ahlength)) cuttings;
+ r = ((q rotated .5ahangle)--(reverse q rotated -.5ahangle)--f--cycle) shifted e;
+ _apth:= gobble(_apth cutbefore f shifted e) cuttings;
+ r
+enddef;
+
+vardef arrowhead_open expr p = %% For open arrow head
+ save q,r,e;
+ path q,r; pair e;
+ e = point length p of p;
+ q = gobble(p shifted -e cutafter makepath(pencircle scaled 2ahlength)) cuttings;
+ r = ((q rotated .5ahangle)--(reverse q rotated -.5ahangle)) shifted e;
+ r
+enddef;
+
+def _finarr_default text t =
+ filldraw arrowhead_default _apth t;
+ draw _apth t
+enddef;
+
+def _findarr_default text t =
+ filldraw arrowhead_default _apth t;
+ _apth:= reverse _apth;
+ filldraw arrowhead_default _apth t;
+ draw _apth t
+enddef;
+
+def _finarr_default_unfilled text t =
+ draw arrowhead_default _apth t;
+ draw _apth t
+enddef;
+
+def _findarr_default_unfilled text t =
+ draw arrowhead_default _apth t;
+ _apth:= reverse _apth;
+ draw arrowhead_default _apth t;
+ draw _apth t
+enddef;
+
+def _finarr_default_sharp text t =
+ fill arrowhead_default _apth t;
+ draw _apth t
+enddef;
+
+def _findarr_default_sharp text t =
+ fill arrowhead_default _apth t;
+ _apth:= reverse _apth;
+ fill arrowhead_default _apth t;
+ draw _apth t
+enddef;
+
+def _finarr_barbed text t =
+ filldraw arrowhead_barbed _apth t;
+ draw _apth t
+enddef;
+
+def _findarr_barbed text t =
+ filldraw arrowhead_barbed _apth t;
+ _apth:= reverse _apth;
+ filldraw arrowhead_barbed _apth t;
+ draw _apth t
+enddef;
+
+def _finarr_barbed_unfilled text t =
+ draw arrowhead_barbed _apth t;
+ draw _apth t
+enddef;
+
+def _findarr_barbed_unfilled text t =
+ draw arrowhead_barbed _apth t;
+ _apth:= reverse _apth;
+ draw arrowhead_barbed _apth t;
+ draw _apth t
+enddef;
+
+def _finarr_barbed_sharp text t =
+ fill arrowhead_barbed _apth t;
+ draw _apth t
+enddef;
+
+def _findarr_barbed_sharp text t =
+ fill arrowhead_barbed _apth t;
+ _apth:= reverse _apth;
+ fill arrowhead_barbed _apth t;
+ draw _apth t
+enddef;
+
+def _finarr_open text t =
+ draw arrowhead_open _apth t;
+ draw _apth t
+enddef;
+
+def _findarr_open text t =
+ draw arrowhead_open _apth t;
+ _apth:= reverse _apth;
+ draw arrowhead_open _apth t;
+ draw _apth t
+enddef;
+
+numeric orig, default, defaultunfilled, defaultsharp, barbed, barbedunfilled, barbedsharp, open;
+
+orig = 0; default = 1; defaultunfilled = 2; defaultsharp = 3; barbed = 4; barbedunfilled = 5; barbedsharp = 6; open = 7;
+
+def setarrows expr t =
+ if t = orig:
+ let drawarrow = drawarrow_orig;
+ let drawdblarrow = drawdblarrow_orig;
+ elseif t = default:
+ let drawarrow = drawarrow_default;
+ let drawdblarrow = drawdblarrow_default;
+ elseif t = defaultunfilled:
+ let drawarrow = drawarrow_default_unfilled;
+ let drawdblarrow = drawdblarrow_default_unfilled;
+ elseif t = defaultsharp:
+ let drawarrow = drawarrow_default_sharp;
+ let drawdblarrow = drawdblarrow_default_sharp;
+ elseif t = barbed:
+ let drawarrow = drawarrow_barbed;
+ let drawdblarrow = drawdblarrow_barbed;
+ elseif t = barbedunfilled:
+ let drawarrow = drawarrow_barbed_unfilled;
+ let drawdblarrow = drawdblarrow_barbed_unfilled;
+ elseif t = barbedsharp:
+ let drawarrow = drawarrow_barbed_sharp;
+ let drawdblarrow = drawdblarrow_barbed_sharp;
+ elseif t = open:
+ let drawarrow = drawarrow_open;
+ let drawdblarrow = drawdblarrow_open;
+ fi
+enddef;