Angle in polar coordinates: lose its accepted value range

[muzimuzhi]

Version: 3.1.9a

In Sec. 13.2.1 "Canvas, XYZ, and Polar Coordinate Systems", page 138, it reads

pgf/doc/generic/pgf/text-en/pgfmanual-en-tikz-coordinates.tex

Lines 195 to 198 in 85d2c38

	\begin{key}{/tikz/cs/angle=\meta{degrees}}
	The angle of the coordinate. The angle must always be given in degrees
	and should be between $-360$ and $720$.
	\end{key}

But according to how coord system canvas polar, \pgfpointpolar and the relied \pgfmath(cos|sin)@ are implemented, the restriction -360 <= <angle> <= 720 seems to be unnecessary.

Moreover, whether realized the documented restriction or not, users may already used out-of-range angles in polar coordinates e.g., in foreach loops.

Example showing that out-of-range angles work

\documentclass{article}
\usepackage{tikz}

\begin{document}
\begin{tikzpicture}
  % draw three pairwise parallel line segments without error nor warning
  \draw           (0,0) -- (30:1cm) 
    [yshift=10pt] (0,0) -- (1080+30:1cm)
    [yshift=10pt] (0,0) -- (-720+30:1cm);
\end{tikzpicture}
\end{document}

[hmenke]

Interesting, good catch. I didn't even know that there was supposed to be a restriction. Feel free to remove it from the manual.