diff --git a/examples/images/upper-central-projection.tex b/examples/images/upper-central-projection.tex
@@ -10,35 +10,32 @@
\clip (-3, 0) rectangle (3, 3);
\draw (0, 0) circle (3);
\end{scope}
-
+
% The equator
\begin{scope}
\clip (-3, 0) rectangle (3, -1);
\draw ellipse (3 and 1);
\end{scope}
-
+
% The equator (on the other side of the sphere)
\draw[dotted] ellipse (3 and 1);
-
+
% The plane
- \draw[dotted] (-4.5, 1.5) --
- ( 1.5, 1.5) --
- ( 4.5, 4.5) --
- (-1.5, 4.5) -- cycle;
-
- % The north pole
- \filldraw (0, 3) circle (2pt);
+ \draw[dotted] (-4.5, 1.8) --
+ ( 1.5, 1.8) --
+ ( 4.5, 4.8) --
+ (-1.5, 4.8) -- cycle;
% The center of the sphere
\filldraw (0, 0) circle (2pt);
% A line trhough the center of the sphere
- \draw (0, 0) -- (1.8, 3);
+ \draw[dotted] (0, 0) -- (1.05, 2.31);
+ \draw (1.05, 2.31) -- (1.5, 3.3);
% The intersection of the line with the plane
- \filldraw (1.8, 3) circle (2pt);
+ \filldraw (1.5, 3.3) circle (2pt);
% The intersection of the line and the sphere
- \filldraw (1.56, 2.57) circle (2pt);
+ \filldraw (1.05, 2.31) circle (2pt);
\end{tikzpicture}
-