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-rw-r--r--info/drawing-with-metapost/src/closed-triangles.mp29
1 files changed, 29 insertions, 0 deletions
diff --git a/info/drawing-with-metapost/src/closed-triangles.mp b/info/drawing-with-metapost/src/closed-triangles.mp
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--- /dev/null
+++ b/info/drawing-with-metapost/src/closed-triangles.mp
@@ -0,0 +1,29 @@
+\documentclass{standalone}
+\usepackage{dwmpcode}
+\usepackage{luamplib}
+\mplibtextextlabel{enable}
+\def \kw#1{\mathop{\hbox{\bf #1\thinspace}}}
+\def \id#1{\mathord{\hbox{\it #1\/}}}
+\begin{document}
+\begin{mplibcode}
+beginfig(1);
+path xx, yy; xx = left scaled 8 -- right scaled 89; yy = down scaled 8 -- up scaled 55;
+path t; t = origin -- (55,0) -- (55,34) -- cycle;
+picture p[];
+p1 = image(
+ahangle := 30;
+drawarrow xx withcolor .67 white;
+drawarrow yy withcolor .67 white;
+fill t withcolor .8[blue,white]);
+
+p2 = image(
+draw p1;
+draw t;
+dotlabel.rt(btex $(55,34)$ etex scaled 0.8, point 2 of t);
+) shifted 144 right;
+draw p1; draw p2;
+label.bot(btex \mpl{fill t withcolor 0.8[blue,white];} etex scaled 0.8, point 1/2 of bbox p1);
+label.bot(btex \mpl{draw t;} etex scaled 0.8, point 1/2 of bbox p2);
+endfig;
+\end{mplibcode}
+\end{document}