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Drawing manual finished

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John Whitington 2023-06-09 11:55:22 +01:00
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cpdfmanual.pdf
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cpdfmanual.tex
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@ -4355,10 +4355,10 @@ Lines may have dash patterns. A dash pattern consists of one or more numbers. Al
\noindent\verb!-pop! Pop graphics stack\\ \noindent\verb!-pop! Pop graphics stack\\
\noindent\verb!-matrix "a b c d e f"! Append to graphics matrix\\ \noindent\verb!-matrix "a b c d e f"! Append to graphics matrix\\
\noindent\verb!-mtrans "tx ty"! Translate the graphics matrix\\ \noindent\verb!-mtrans "tx ty"! Translate the graphics matrix\\
\noindent\verb!-mrot "x y a"! Rotate the graphics matrix\\ \noindent\verb!-mrot "x y a"! Rotate the graphics matrix counterclockwise around \texttt{(x, y)} by angle \texttt{a}\\
\noindent\verb!-mscale "sx sy"! Scale the graphics matrix\\ \noindent\verb!-mscale "x y sx sy"! Scale the graphics matrix around \texttt{x, y}\\
\noindent\verb!-mshearx "x y a"! Shear the graphics matrix in X\\ \noindent\verb!-mshearx "x y a"! Shear the graphics matrix in X around \texttt{(x, y)} by angle \texttt{a}\\
\noindent\verb!-msheary "x y a"! Shear the graphics matrix in Y \noindent\verb!-msheary "x y a"! Shear the graphics matrix in Y around \texttt{(x, y)} by angle \texttt{a}
\end{framed}} \end{framed}}
PDF maintains a stack of graphics state, which we can manipulate with \texttt{-push} which stores the current state, then modify the state for our own purposes, and then use \texttt{-pop} to restore the previous state. Such invocations may be nested. Here is a simple example: PDF maintains a stack of graphics state, which we can manipulate with \texttt{-push} which stores the current state, then modify the state for our own purposes, and then use \texttt{-pop} to restore the previous state. Such invocations may be nested. Here is a simple example:
@ -4389,6 +4389,8 @@ PDF maintains a stack of graphics state, which we can manipulate with \texttt{-p
\fbox{\includegraphics[width=0.3\textwidth]{manualimages/matrix.pdf}} \fbox{\includegraphics[width=0.3\textwidth]{manualimages/matrix.pdf}}
\bigskip \bigskip
\noindent This is important because, in the absence of \texttt{-push} and \texttt{-pop} there would be no way to reverse the effect of a graphics matrix modification except to manually calculate its inverse and apply it.
\section{Re-use with XObjects} \section{Re-use with XObjects}
{\small\begin{framed} {\small\begin{framed}
\vspace{1.5mm} \vspace{1.5mm}