5 files changed, 113 insertions, 3 deletions
diff --git a/Master/texmf-dist/doc/metapost/shapes/CHANGES b/Master/texmf-dist/doc/metapost/shapes/CHANGES
new file mode 100644
index 00000000000..90712739238
--- /dev/null
+++ b/Master/texmf-dist/doc/metapost/shapes/CHANGES
@@ -0,0 +1,6 @@
+v1.1, released on 1 August 2015:  updated; now allows ticks
+around the circle of the modular shapes at arbitrary
+intervals.  The ticks can be styled by length and pen.
+
+v1.0, released on 18 July 2015:  initial release.  All basic
+functionality implemented.
diff --git a/Master/texmf-dist/doc/metapost/shapes/README b/Master/texmf-dist/doc/metapost/shapes/README
index e85c1e69e22..0310f8914c1 100644
--- a/Master/texmf-dist/doc/metapost/shapes/README
+++ b/Master/texmf-dist/doc/metapost/shapes/README
@@ -23,6 +23,3 @@ The shapes macros for Metapost provide regular polygons,
 their corresponding reentrant stars, and images
 demonstrating fractions.  These macros are quite
 configurable.
-
-v1.0, released on 18 July 2015:  initial release.  All basic
-functionality implemented.
diff --git a/Master/texmf-dist/doc/metapost/shapes/shapes.pdf b/Master/texmf-dist/doc/metapost/shapes/shapes.pdf
index adfac70ceaa..69510315a68 100644
--- a/Master/texmf-dist/doc/metapost/shapes/shapes.pdf
+++ b/Master/texmf-dist/doc/metapost/shapes/shapes.pdf
diff --git a/Master/texmf-dist/metapost/shapes/shapes.mp b/Master/texmf-dist/metapost/shapes/shapes.mp
index 33b20ddd3d7..e868003b030 100644
--- a/Master/texmf-dist/metapost/shapes/shapes.mp
+++ b/Master/texmf-dist/metapost/shapes/shapes.mp
@@ -73,6 +73,10 @@ enddef;
 boolean modcircle; modcircle := true;
 pen modcirclepen; modcirclepen := pencircle scaled 1;
 pen modshapepen; modshapepen := pencircle scaled 1;
+boolean modticks; modticks := false;
+numeric nummodticks; nummodticks := 12;
+numeric ticklen; ticklen := 0.1in;
+pen tickpen; tickpen := pencircle scaled 1;
 def modstar(expr numpoints,numbers,numstar) =
 picture modfigure;
 if (modcircle = true):
@@ -80,6 +84,23 @@ modfigure := image(draw fullcircle scaled 1in withpen modcirclepen;);
 else:
 modfigure := image();
 fi;
+picture modtickpic;
+if (modticks = true):
+modtickpic := image(
+pair tickstart[]; pair tickend[];
+tickstart[0] = (0,0) shifted (0,0.5in);
+tickend[0] = tickstart[0] shifted (0,ticklen);
+draw tickstart[0]--tickend[0] withpen tickpen;
+for i=1 upto (nummodticks-1):
+tickstart[i] = tickstart[i-1] rotatedaround
+((0,0), (360/nummodticks));
+tickend[i] = tickend[i-1] rotatedaround
+((0,0), (360/nummodticks));
+draw tickstart[i]--tickend[i] withpen tickpen;
+endfor;
+);
+addto modfigure also modtickpic;
+fi
 pickup modshapepen;
 pair p[]; pair q[];
 picture addition;
@@ -120,6 +141,23 @@ modfigure := image(draw fullcircle scaled 1in withpen modcirclepen);
 else:
 modfigure := image();
 fi
+picture modtickpic;
+if (modticks = true):
+modtickpic := image(
+pair tickstart[]; pair tickend[];
+tickstart[0] = (0,0) shifted (0,0.5in);
+tickend[0] = tickstart[0] shifted (0,ticklen);
+draw tickstart[0]--tickend[0] withpen tickpen;
+for i=1 upto (nummodticks-1):
+tickstart[i] = tickstart[i-1] rotatedaround
+((0,0), (360/nummodticks));
+tickend[i] = tickend[i-1] rotatedaround
+((0,0), (360/nummodticks));
+draw tickstart[i]--tickend[i] withpen tickpen;
+endfor;
+);
+addto modfigure also modtickpic;
+fi
 pair p[]; pair q[];
 picture addition;
 pickup modshapepen;
diff --git a/Master/texmf-dist/source/metapost/shapes/shapes.dtx b/Master/texmf-dist/source/metapost/shapes/shapes.dtx
index ab1b14cfb28..9a7c4b2125a 100644
--- a/Master/texmf-dist/source/metapost/shapes/shapes.dtx
+++ b/Master/texmf-dist/source/metapost/shapes/shapes.dtx
@@ -193,6 +193,37 @@
 % Both |modcirclepen| and |modshapepen| default to 
 % |pencircle scaled 1|.
 %
+% We can also put ticks around the outside of the circle,
+% at whatever intervals we want.  The parameters here are
+% \DescribeMacro{modticks}|modticks|, which is a boolean set
+% to |false| by default.  Set it to |true| if you want
+% ticks.  You can control the number of ticks with
+% \DescribeMacro{nummodticks}|nummodticks|, which defaults
+% to twelve.  You can control the length of those ticks with
+% \DescribeMacro{ticklen}|ticklen|, which defaults to
+% |0.1in|.  Finally, you can control the pen that is used to
+% draw the ticks, which is \DescribeMacro{tickpen}|tickpen|,
+% which defaults to |pencircle scaled 1|:
+%
+% \demonstrate{%
+%	\hbox{|nummodticks := 6;|}
+%	\hbox{|ticklen := 0.2in;|}
+%	\hbox{|modticks := true;|}
+%	\hbox{|tickpen := pensquare scaled 2;|}
+%	\hbox{|modshapepen := pensquare scaled 4;|}
+%	\hbox{|modfig(4,0);|}
+%	\hbox{|draw modfigure;|}
+% }{%
+% 	\begin{mpost}
+%	nummodticks := 6;
+%	ticklen := 0.2in;
+%	modticks := true;
+%	tickpen := pensquare scaled 2;
+%	modshapepen := pensquare scaled 4;
+%	modfig(4,0); draw modfigure;
+%	\end{mpost}
+% }%
+%
 % We can do essentially the same thing with reentrant star
 % figures with |modstar|.  Unlike |modfig|, |modstar| takes
 % \emph{three} arguments:  the number of vertices, whether
@@ -330,6 +361,10 @@ enddef;
 boolean modcircle; modcircle := true;
 pen modcirclepen; modcirclepen := pencircle scaled 1;
 pen modshapepen; modshapepen := pencircle scaled 1;
+boolean modticks; modticks := false;
+numeric nummodticks; nummodticks := 12;
+numeric ticklen; ticklen := 0.1in;
+pen tickpen; tickpen := pencircle scaled 1;
 def modstar(expr numpoints,numbers,numstar) =
 	picture modfigure;
 	if (modcircle = true):
@@ -337,6 +372,23 @@ def modstar(expr numpoints,numbers,numstar) =
 	else:
 		modfigure := image();
 	fi;
+	picture modtickpic;
+	if (modticks = true):
+		modtickpic := image(
+			pair tickstart[]; pair tickend[];
+			tickstart[0] = (0,0) shifted (0,0.5in);
+			tickend[0] = tickstart[0] shifted (0,ticklen);
+			draw tickstart[0]--tickend[0] withpen tickpen;
+			for i=1 upto (nummodticks-1):
+				tickstart[i] = tickstart[i-1] rotatedaround
+					((0,0), (360/nummodticks));
+				tickend[i] = tickend[i-1] rotatedaround
+					((0,0), (360/nummodticks));
+				draw tickstart[i]--tickend[i] withpen tickpen;
+			endfor;
+		);
+		addto modfigure also modtickpic;
+	fi
 	pickup modshapepen;
 	pair p[]; pair q[];
 	picture addition;
@@ -377,6 +429,23 @@ def modfig(expr numpoints,numbers) =
 	else:
 		modfigure := image();
 	fi
+	picture modtickpic;
+	if (modticks = true):
+		modtickpic := image(
+			pair tickstart[]; pair tickend[];
+			tickstart[0] = (0,0) shifted (0,0.5in);
+			tickend[0] = tickstart[0] shifted (0,ticklen);
+			draw tickstart[0]--tickend[0] withpen tickpen;
+			for i=1 upto (nummodticks-1):
+				tickstart[i] = tickstart[i-1] rotatedaround
+					((0,0), (360/nummodticks));
+				tickend[i] = tickend[i-1] rotatedaround
+					((0,0), (360/nummodticks));
+				draw tickstart[i]--tickend[i] withpen tickpen;
+			endfor;
+		);
+		addto modfigure also modtickpic;
+	fi
 	pair p[]; pair q[];
 	picture addition;
 	pickup modshapepen;