animate update (24oct07)

git-svn-id: svn://tug.org/texlive/trunk@5264 c570f23f-e606-0410-a88d-b1316a301751

15 files changed, 561 insertions, 1200 deletions

diff --git a/Master/texmf-dist/doc/latex/animate/README b/Master/texmf-dist/doc/latex/animate/README
index c4c96822e10..e3cd6ac0081 100644
--- a/Master/texmf-dist/doc/latex/animate/README
+++ b/Master/texmf-dist/doc/latex/animate/README
@@ -71,7 +71,8 @@ Usage:
                      draft, controls, buttonsize=<size>, buttonbg=<colour>,
                      buttonfg=<colour>, loop, palindrome, step,
                      poster[=first | none | last], begin={<begin text>},
-                     end={<end text>}, timeline=<timeline file>
+                     end={<end text>}, timeline=<timeline file>,
+                     every=<number>
 
 
 Requirements:
diff --git a/Master/texmf-dist/doc/latex/animate/doc/animate.pdf b/Master/texmf-dist/doc/latex/animate/doc/animate.pdf
index 53046ff9687..9aab7604b94 100644
--- a/Master/texmf-dist/doc/latex/animate/doc/animate.pdf
+++ b/Master/texmf-dist/doc/latex/animate/doc/animate.pdf
diff --git a/Master/texmf-dist/doc/latex/animate/doc/animate.tex b/Master/texmf-dist/doc/latex/animate/doc/animate.tex
index ac5e1dbca4f..d7bcfffefc7 100644
--- a/Master/texmf-dist/doc/latex/animate/doc/animate.tex
+++ b/Master/texmf-dist/doc/latex/animate/doc/animate.tex
@@ -10,6 +10,7 @@
 \usepackage{pst-3dplot}
 \usepackage{fp}
 \usepackage{animate}
+\usepackage{intcalc}
 \usepackage{graphicx}
 \usepackage{hyperref}
 \usepackage{textcomp}
@@ -103,7 +104,7 @@ buttonfg=<colour>
 step
 poster[=first | none | last]
 \end{verbatim}
-The same options are also available as command options and will be explained shortly. However, if used as package options they have global scope, taking effect on all animations in the document. In turn, command options locally override global settings.
+The same options are also available (among others) as command options and will be explained shortly. However, if used as package options they have global scope, taking effect on all animations in the document. In turn, command options locally override global settings.
 
 If PDF is generated via DVI and Postscript by the command sequence \verb+latex+ $\rightarrow$ \verb+dvips+ $\rightarrow$ \verb+ps2pdf+, the `graphicx' package is required. \emph{Important:} The \verb+dvips+ option `\verb+-Ppdf+' should \emph{not} be set when converting the intermediate DVI into Postscript. If you cannot do without, put `\verb+-X 2400 -Y 2400+' \emph{after} `\verb+-Ppdf+' on the command line.
 
@@ -125,13 +126,13 @@ and the environment
 
 While \verb+\animategraphics+ can be used to assemble animations from sets of existing graphics files, the environment `\verb+animateinline+' is intended to create the animation from the typeset material it encloses. This material can be pictures drawn within the \LaTeX{} `\verb+picture+' environment or using the advanced capabilities of PSTricks or pgf/TikZ. Even ordinary textual material may be animated in this way. The parameter \verb+<frame rate>+ specifies the number of frames per second of the animation.
 
-By default, the animation is build frame by frame in the order of inclusion of the embedded material. However, extended control of the order of appearance, superposition and repetition of the material is available through the `\verb+timeline+' option (see below).
+By default, the animation is built frame by frame in the order of inclusion of the embedded material. However, extended control of the order of appearance, superposition and repetition of the material is available through the `\verb+timeline+' option (see below).
 
 The command \verb+\newframe+ terminates a frame and starts the next one. It can be used inside the `\verb+animateinline+' environment only. There is a starred variant, \verb+\newframe*+. If placed after a particular frame it causes the animation to pause at that frame. The animation continues normally after clicking it again. Both \verb+\newframe+ variants take an optional argument that allows to change the frame rate in the middle of an animation.
 
-All files of the sequence must be consecutively numbered. {\tt <file base\-name>} is the leftmost part of the file name that all members of the sequence have in common. \verb+<first>+ is the number of the first and \verb+<last>+ the number of the last file in the set. File names may be simply numbered, such as $0\dots99$. If there are leading zeros, make sure that all file numbers have the same number of digits, such as $0000\dots0099$.
+All files of the sequence should exist and be consecutively numbered. (Exception to this rule is allowed in connexion with the `\verb+every+' option, see below). {\tt <file base\-name>} is the leftmost part of the file name that is common to all members of the sequence. \verb+<first>+ is the number of the first and \verb+<last>+ the number of the last file in the set. File names may be simply numbered, such as $0\dots99$. If there are leading zeros, make sure that all file numbers have the same number of digits, such as $0000\dots0099$.
 
-There is no file name extension to be specified as parameter. The possible file formats depend on whether \LaTeX{} or pdf\LaTeX{} is used. In the case of \LaTeX{}, files with the extension `\verb+eps+' are searched for at first, followed by `\verb+mps+' (\MP-generated Postscript) and `\verb+ps+'. With pdf\LaTeX{} the searching order is: (1)~`\verb+pdf+', (2)~`\verb+mps+', (3)~`\verb+png+', (4)~`\verb+jpg+', (5)~`\verb+jpeg+', (6)~`\verb+jbig2+', (7)~`\verb+jb2+', (8)~`\verb+jp2+'\footnotemark[1], (9)~`\verb+j2k+'\footnotemark[1], (10)~`\verb+jpx+'\footnotemark[1]\footnotetext[1]{JPEG2000 is currently unsupported by pdf\TeX.}. That is, files capable to store vector graphics are found first. Make sure that all file names have \emph{lower case} extensions.
+There is no file name extension to be specified as a parameter. The possible file formats depend on whether \LaTeX{} or pdf\LaTeX{} is used. In the case of \LaTeX{}, files with the extension `eps' are searched for at first, followed by `mps' (\MP-generated Postscript) and `ps'. With pdf\LaTeX{} the searching order is: (1)~`pdf', (2)~`mps', (3)~`png', (4)~`jpg', (5)~`jpeg', (6)~`jbig2', (7)~`jb2', (8)~`jp2'\footnotemark[1], (9)~`j2k'\footnotemark[1], (10)~`jpx'\footnotemark[1]\footnotetext[1]{JPEG2000 is not yet supported by pdf\TeX.}. That is, files capable to store vector graphics are found first. Make sure that all file names have \emph{lower case} extensions.
 
 For example, given the sequence `frame\_5.png' through `frame\_19.png' from a possibly larger set that shall be used to build the animation. Then, {\tt <file base\-name>} would be specified as `\verb+frame_+', \verb+<first>+ as `\verb+5+' and \verb+<last>+ as `\verb+19+'.
 
@@ -141,6 +142,10 @@ poster[=first | none | last]
 \end{verbatim}
 Specifies which frame (first, last or none) to display and print if the animation is not activated. The first frame is shown by default. Thus `\verb+poster+' or `\verb+poster=first+' need not be explicitly set.
 \begin{verbatim}
+every=<num>
+\end{verbatim}
+Build animation from every \verb+<num>+\emph{th} frame only. Skipped frames are discarded and not embedded into the document. In the case of \verb+\animategraphics+, skipped input files may be missing.
+\begin{verbatim}
 autopause
 \end{verbatim}
 Pause animation when the page is closed, instead of stopping and rewinding it to the default frame.
@@ -169,7 +174,7 @@ width=<width>
 height=<height>
 depth=<depth>
 \end{verbatim}
-Resize the animation widget. Any valid \TeX{} dimension is accepted as parameter. Option `\verb+depth+' specifies how far the animation widget should extend below the bottom line of the running text. If only one or two of these options are given, the unspecified dimensions are scaled to keep the aspect ratio.
+Resize the animation widget. Any valid \TeX{} dimension is accepted as a parameter. Option `\verb+depth+' specifies how far the animation widget should extend below the bottom line of the running text. If only one or two of these options are given, the remaining, unspecified dimensions are scaled to keep the aspect ratio.
 \begin{verbatim}
 scale=<factor>
 \end{verbatim}
@@ -240,7 +245,11 @@ and
 In the first example, transparency No. `0' appears in the uppermost depth level throughout the animation; it will never be obscured by other transparencies' content. In the second example it is put on the lowest level (because it is the first transparency specification in the file) and stays there for the rest of the animation.
 
 \section{Examples}
-\subsection[Animation from a set of files, using `animategraphics' command]{Animation from a set of files, using {\tt \string\animategraphics} command together with `{\tt timeline'} option}
+\subsection[Animations from sets of files, using `animategraphics' command]{Animations from sets of files, using {\tt \string\animategraphics} command}
+Animations in this section are made from graphics files that were prepared with \MP. Run `\verb+mpost+' on the files ending in `\verb+.mp+' in the `\verb+doc/files+' directory to generate the graphics files. Both examples make use of the `\verb+timeline+' option to reduce the resulting PDF file size.
+
+The first example, originally written by Jan Hole\v{c}ek~\cite{hol}, shows the exponential function $y=e^x$ and its approximation by Taylor polynomials of different degree.
+
 \small
 \begin{verbatim}
 \documentclass{article}
@@ -253,7 +262,7 @@ In the first example, transparency No. `0' appears in the uppermost depth level
   \animategraphics[
     controls, loop,
     timeline=timeline.txt
-  ]{4}{frame_}{0}{8}
+  ]{4}{exp_}{0}{8}
 \end{center}
 
 \end{document}
@@ -275,10 +284,77 @@ Contents of file `\verb+timeline.txt+':
 \normalsize
 
 \begin{center}
-  \animategraphics[controls,loop,timeline=timeline.txt]{4}{frame_}{0}{8}
+  \animategraphics[controls,loop,timeline=timeline.txt]{4}{exp_}{0}{8}
+\end{center}
+
+The second, somewhat more complex example animates the geometric construction of a scarabaeus. It is adapted from Maxime Chupin's original \MP{} source file \cite{chupin}. The present version separates stationary from moving parts of the drawing and saves them into different files. A total of 153 files, \verb+scarab_0.mps+ through \verb+scarab_152.mps+, is written out by running `\verb+mpost+' on the source file `\verb+scarab.mp+'. Files 0 through 100 contain the moving construction lines and the growing scarabaeus. Files 101 through 151 contain the gray lines which represent intermediate stages of the construction. The last file, No. 152, contains the coordinate axes, two stationary construction lines and the labels which do not move. Everything is overlaid by means of a timeline file that is written on-the-fly during the \LaTeX{} run to produce an animation of 101 individual frames.
+\small
+\begin{verbatim}
+\documentclass{article}
+\usepackage{intcalc} %defines \intcalcMod for Modulo computation
+\usepackage{animate}
+\usepackage{graphics}
+
+\newcounter{scarab}
+\setcounter{scarab}{0}
+\newcounter{grayline}
+\setcounter{grayline}{101}
+
+%write timeline file
+\newwrite\TimeLineFile
+\immediate\openout\TimeLineFile\jobname.tln
+\whiledo{\thescarab<101}{
+  \ifthenelse{\intcalcMod{\thescarab}{2}=0}{
+    %a gray line is added to every 2nd frame
+    \immediate\write\TimeLineFile{::\thegrayline x0,152,\thescarab}
+    \stepcounter{grayline}
+  }{
+    \immediate\write\TimeLineFile{::152,\thescarab}
+  }
+  \stepcounter{scarab}
+}
+\immediate\closeout\TimeLineFile
+
+\begin{document}
+\begin{center}
+  \animategraphics[
+    width=0.8\linewidth,
+    controls, loop,
+    timeline=\jobname.tln
+  ]{12}{scarab_}{0}{152}
+\end{center}
+\end{document}
+\end{verbatim}
+\newcounter{scarab}
+\setcounter{scarab}{0}
+\newcounter{grayline}
+\setcounter{grayline}{101}
+
+\newwrite\TimeLineFile
+\immediate\openout\TimeLineFile\jobname.tln
+\whiledo{\thescarab<101}{
+  \ifthenelse{\intcalcMod{\thescarab}{2}=0}{%
+    \immediate\write\TimeLineFile{::\thegrayline x0,152,\thescarab}
+    \stepcounter{grayline}
+  }{
+    \immediate\write\TimeLineFile{::152,\thescarab}
+  }
+  \stepcounter{scarab}
+}
+\immediate\closeout\TimeLineFile
+
+\begin{center}
+  \animategraphics[
+    width=0.8\linewidth,
+    controls,
+    loop,
+    timeline=\jobname.tln
+  ]{12}{scarab_}{0}{152}
 \end{center}
 
+\normalsize
 \subsection[Animating PSTricks graphics, using `animateinline' environment]{Animating PSTricks graphics, using `{\tt animateinline}' environment}
+This is an inline graphics example adapted from \cite{gilg05}.
 \small
 \begin{verbatim}
 \documentclass{article}
@@ -368,16 +444,16 @@ Contents of file `\verb+timeline.txt+':
 
 \section{Bugs}\label{sect:bugs}
 \begin{itemize}
-  \item The command {\tt\string\multido} and its relatives from package `multido' do not work if the loop body contains {\tt\string\newframe}. Use {\tt\string\whiledo} from package `ifthen' instead. (There is no need to load `ifthen' explicitly; it has already been loaded by `animate'.) A counter must be declared to keep track of the number of iterations. Further variables that take fixed point decimals to be used within the loop body can be defined and incremented by means of the commands \verb+\FPset+ and \verb+\FPadd+ from package `{\tt fp}'. For example:
+  \item The command {\tt\string\multido} and its relatives from package `multido' do not work if the loop body contains {\tt\string\newframe}. Use {\tt\string\whiledo} from package `if\/then' instead. (There is no need to load `if\/then' explicitly; it has already been loaded by `animate'.) A counter must be declared to keep track of the number of iterations. Further variables that take fixed point decimals to be used within the loop body can be defined and incremented by means of the commands \verb+\FPset+ and \verb+\FPadd+ from package `{\tt fp}'. For example:
 \small
 \begin{verbatim}
 % declare loop counter
 \newcounter{iter}%
 
 \begin{animateinline}{12}
-  % initialize loop counter
+  %initialize loop counter
   \setcounter{iter}{0}%
-  % define some variable, e. g. `\somevar'
+  %define some variable, e. g. `\somevar'
   \FPset{\somevar}{1.0}%
   %make copy `\varcopy' of `\somevar' with global scope
   \xdef\varcopy{\somevar}%
@@ -386,7 +462,7 @@ Contents of file `\verb+timeline.txt+':
   ... (\multido _can_ be used here!)
   ...
   \whiledo{\theiter<50}{% another 50 frames
-    % start new frame
+    %start new frame
     \newframe%
     %increment loop counter by 1
     \addtocounter{iter}{1}%
@@ -403,6 +479,10 @@ Contents of file `\verb+timeline.txt+':
 \end{verbatim}
 \normalsize
 
+  \item The maximum frame rate that can actually be achieved largely depends on the complexity of the graphics and on the available hardware.
+
+  \item The Adobe Reader setting `Use page cache' (menu `Preferences'$\rightarrow$`Startup') should be \emph{dis}abled.
+
   \item The \verb+dvips+ option `\verb+-Ppdf+' should be avoided entirely or followed by something like `\verb+-X 2400 -Y 2400+' on the command line in order to set a sensible DVI resolution. In times of Type-1 fonts, this does \emph{not} degrade the output quality! The configuration file `\verb+config.pdf+' loaded by option `\verb+-Ppdf+' specifies an excessively high DVI resolution that will be passed on to the final PDF. Eventually, Adobe Reader gets confused and will not display the frames within the animation widget.
 
   \item Animations do not work if the PDF has been produced with Ghostscript versions older than 8.31. This applies to all versions of ESP Ghostscript that comes with many Linux distributions.
@@ -419,8 +499,11 @@ Contents of file `\verb+timeline.txt+':
 I would like to thank Fran\c{c}ois Lafont who discovered quite a few bugs and made many suggestions that helped to improve the functionality of the package.
 
 \begin{thebibliography}{8}
-  \bibitem{movie15} \emph{The Movie15 Package}. URL: \href{http://www.ctan.org/tex-archive/macros/latex/contrib/movie15/}{\tt http://www.ctan.org/tex-archive/macros/} \href{http://www.ctan.org/tex-archive/macros/latex/contrib/movie15/}{\tt latex/contrib/movie15}
+  \bibitem{chupin} Chupin, M.: \href{http://melusine.eu.org/syracuse/metapost/animations/chupin/?idsec=scara}{\tt http://melusine.eu.org/syracuse/metapost/animations/} \href{http://melusine.eu.org/syracuse/metapost/animations/chupin/?idsec=scara}{\tt chupin/?idsec=scara}
+  \bibitem{gilg05} Gilg, J.: PDF-Animationen. In: \emph{Die \TeX nische Kom\"odie}, Issue 4, 2005, pp.~30--37
+  \bibitem{hol} Hole\v{c}ek, J.: \emph{Animations in a pdf\TeX-generated PDF}. URL: \href{http://www.fi.muni.cz/~xholecek/tex/pdfanim.xhtml}{\tt http://www.} \href{http://www.fi.muni.cz/~xholecek/tex/pdfanim.xhtml}{\tt fi.muni.cz/~xholecek/tex/pdfanim.xhtml}
   \bibitem{hol04} Hole\v{c}ek, J. ; Sojka, P.: Animations in pdf\TeX-generated PDF. In: \emph{Lecture Notes in Computer Science}, Vol. 3130, 2004, pp.~179--191
+  \bibitem{movie15} \emph{The Movie15 Package}. URL: \href{http://www.ctan.org/tex-archive/macros/latex/contrib/movie15/}{\tt http://www.ctan.org/tex-archive/macros/} \href{http://www.ctan.org/tex-archive/macros/latex/contrib/movie15/}{\tt latex/contrib/movie15}
 \end{thebibliography}
 
 \end{document}
diff --git a/Master/texmf-dist/doc/latex/animate/doc/files/exp.mp b/Master/texmf-dist/doc/latex/animate/doc/files/exp.mp
new file mode 100644
index 00000000000..f0999f164dc
--- /dev/null
+++ b/Master/texmf-dist/doc/latex/animate/doc/files/exp.mp
@@ -0,0 +1,108 @@
+%@AUTHOR: Jan Holecek, Alexander Grahn
+%@DATE: 2007/10/02
+
+filenametemplate "%j_%c.mps";
+
+e := 2.718282;
+N=8;
+size := 5cm;
+bars := 0.5mm;
+diff := 0.05;
+xmin := -2;
+xmax :=  2;
+xo   := -2;
+ymin :=  0;
+ymax :=  e**xmax;
+xcoe := size / (xmax - xmin);
+ycoe := size / (ymax - ymin);
+
+
+pair xaxis[], yaxis[], npnt;
+xaxis[1] = (xmin * xcoe, 0);   xaxis[2] = (xmax * xcoe, 0);
+yaxis[1] = (0, ymin * ycoe);   yaxis[2] = (0, ymax * ycoe);
+npnt = (xmin * xcoe, ymax * ycoe);
+
+picture xlabel, ylabel, elabel, nlabel[];
+xlabel = btex $x$ etex;
+ylabel = btex $y$ etex;
+elabel = btex $y = e^x$ etex;
+nlabel[1] = btex $n = 1$ etex;
+nlabel[2] = btex $n = 2$ etex;
+nlabel[3] = btex $n = 3$ etex;
+nlabel[4] = btex $n = 4$ etex;
+nlabel[5] = btex $n = 5$ etex;
+nlabel[6] = btex $n = 6$ etex;
+nlabel[7] = btex $n = 7$ etex;
+nlabel[8] = btex $n = 8$ etex;
+
+
+def pnt (expr x,y)=
+  ( x * xcoe, y * ycoe )
+enddef;
+
+def exp (expr x)=
+  pnt (x , e**x)
+enddef;
+
+def taylor (expr s,x)=
+  begingroup
+    save i,v,w;
+    v = 1;
+    w = 1;
+    for i := 1 upto s:
+      w := (w * (x-xo)) / i;
+      v := v + w;
+    endfor;
+    pnt (x , v * (e**xo))
+  endgroup
+enddef;
+
+path pexp,ptaylor[];
+
+pexp = exp(xmin) 
+for i:=xmin+diff step diff until xmax:
+  .. exp(i)
+endfor;
+
+for j:=1 upto N:
+  ptaylor[j] := taylor (j,xmin)
+  for i:=xmin+diff step diff until xmax:
+    .. taylor(j,i)
+  endfor;
+endfor;
+
+def axis=
+  drawarrow xaxis[1]--xaxis[2];
+  drawarrow yaxis[1]--yaxis[2];
+  for k:=-1,1:
+    draw (k * xcoe, -bars) -- (k * xcoe, bars);
+  endfor;
+  for k:=1 upto 6:
+    draw (-bars, k * ycoe) -- (bars, k * ycoe);
+  endfor;
+  draw pexp withcolor red;
+  label.lrt  (xlabel, xaxis[2]);
+  label.ulft (ylabel, yaxis[2]);
+  label.top  (elabel, point (length (pexp)) of pexp);
+enddef;
+
+path bounds;
+beginfig(0);
+  pickup pencircle scaled 0.4mm;
+  axis;
+  bounds:=bbox currentpicture;
+  setbounds currentpicture to bounds;
+  clip currentpicture to bounds;
+endfig;
+
+for i:=1 upto N:
+  beginfig(i);
+    pickup pencircle scaled 0.4mm;
+    draw ptaylor[i] withcolor blue;
+    label.lrt ( nlabel[i], npnt);
+    setbounds currentpicture to bounds;
+    clip currentpicture to bounds;
+  endfig;
+endfor;
+
+end.
diff --git a/Master/texmf-dist/doc/latex/animate/doc/files/frame_0.mps b/Master/texmf-dist/doc/latex/animate/doc/files/frame_0.mps
deleted file mode 100644
index 80b60cf3268..00000000000
--- a/Master/texmf-dist/doc/latex/animate/doc/files/frame_0.mps
+++ /dev/null
@@ -1,144 +0,0 @@
-%!PS
-%%BoundingBox: -72 -7 84 151 
-%%HiResBoundingBox: -71.43304 -6.3895 83.19305 150.05891 
-%%Creator: MetaPost 0.901
-%%CreationDate: 2007.09.13:1645
-%%Pages: 1
-%*Font: cmmi10 9.96265 9.96265 65:800018
-%*Font: cmr10 9.96265 9.96265 3d:8
-%*Font: cmmi7 6.97385 6.97385 78:8
-%%BeginProlog
-%%EndProlog
-%%Page: 1 1
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--2.94571 17.63345 -2.3551 17.92912 -1.76744 18.23051 curveto
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-57.30302 93.59413 57.89333 95.09596 58.47244 96.60213 curveto
-59.07489 98.16898 59.66519 99.74046 60.2442 101.31612 curveto
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-62.61856 107.96375 63.20886 109.68362 63.78772 111.40735 curveto
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-66.16219 118.68018 66.7524 120.56104 67.33125 122.4454 curveto
-67.93419 124.40813 68.52478 126.37463 69.10301 128.34477 curveto stroke
- 0 setgray
--68.76613 133.21184 moveto
-(n) cmmi10 9.96265 fshow
--60.01883 133.21184 moveto
-(=) cmr10 9.96265 fshow
--49.50282 133.21184 moveto
-(7) cmr10 9.96265 fshow
-showpage
-%%EOF
diff --git a/Master/texmf-dist/doc/latex/animate/doc/files/frame_8.mps b/Master/texmf-dist/doc/latex/animate/doc/files/frame_8.mps
deleted file mode 100644
index e0d2b78ca1e..00000000000
--- a/Master/texmf-dist/doc/latex/animate/doc/files/frame_8.mps
+++ /dev/null
@@ -1,102 +0,0 @@
-%!PS
-%%BoundingBox: -72 2 70 140 
-%%HiResBoundingBox: -71.43304 2.0289 69.66994 139.63223 
-%%Creator: MetaPost 0.901
-%%CreationDate: 2007.09.13:1645
-%%Pages: 1
-%*Font: cmmi10 9.96265 9.96265 6e:8
-%*Font: cmr10 9.96265 9.96265 38:84
-%%BeginProlog
-%%EndProlog
-%%Page: 1 1
- 0 0 1 setrgbcolor 0 1.13383 dtransform truncate idtransform setlinewidth pop
- [] 0 setdash 1 setlinecap 1 setlinejoin 10 setmiterlimit
-newpath -70.86612 2.59583 moveto
--69.09436 2.729 lineto
--67.3226 2.86891 lineto
--65.55084 3.01613 lineto
--63.77907 3.17067 lineto
--62.00731 3.3331 lineto
--60.23555 3.50403 lineto
--58.46379 3.68375 lineto
--56.69203 3.87253 lineto
--54.92027 4.07126 lineto
--53.14851 4.27994 lineto
--51.37674 4.49947 lineto
--50.78592 4.5745 -50.19531 4.65129 -49.60498 4.7301 curveto
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-showpage
-%%EOF
diff --git a/Master/texmf-dist/doc/latex/animate/doc/files/scarab.mp b/Master/texmf-dist/doc/latex/animate/doc/files/scarab.mp
new file mode 100644
index 00000000000..8a74b530cc0
--- /dev/null
+++ b/Master/texmf-dist/doc/latex/animate/doc/files/scarab.mp
@@ -0,0 +1,128 @@
+%@AUTHOR: Maxime Chupin, Alexander Grahn
+%@DATE: 2007/10/02
+
+filenametemplate "%j_%c.mps";
+
+verbatimtex
+%&latex
+\documentclass{article}
+\usepackage[latin1]{inputenc}
+\usepackage{amsmath}
+%\usepackage[mdugm]{mathdesign}
+\begin{document}
+etex
+
+u:=4cm;
+picture trait;
+
+vardef proj(expr P,M,N)=
+  save H;
+  pair H;
+  H=whatever [M,N];
+  H-P=whatever * (M - N) rotated 90;
+  H
+enddef;
+
+path dr,cercle,drb,scara;
+pair A,B,C,D,Q,T,O',P,O,M,M',N;
+O:=(0,0);
+O':=(-u/3,0);
+A:=(u/sqrt(2),u/sqrt(2)) shifted O' ;
+B:=(u/sqrt(2),-u/sqrt(2)) shifted O';
+C:=(-u/sqrt(2),-u/sqrt(2))shifted O';
+D:=(-u/sqrt(2),u/sqrt(2)) shifted O';
+dr:=A--C;
+drb:=B--D;
+
+%scarabaeus construction
+for i:=0 upto 100:
+  if i=0:
+    P:=A;
+    Q:=O';
+    M:=proj(O,P,Q);
+    scara:=M;
+  else:
+    for j:=1 upto 4:
+      k:=4*(i-1)+j;
+      if (k<200) or (k=200):
+        P:=point (k*0.005) of dr;
+        cercle:=halfcircle
+          scaled 2u rotated 45 shifted P;
+        if k=0:
+          Q:=O';
+        fi;
+        if (k<>0) and (k<>200):
+          Q:=cercle intersectionpoint drb;
+        fi;
+        if k=200:
+          Q:=O';
+        fi;
+      else:
+        P:= point (2-k*0.005) of dr;
+        cercle:=halfcircle
+          scaled 2u rotated (-135) shifted P;
+        if k<400:
+          Q:=cercle intersectionpoint drb;
+        fi;
+        if k=400:
+          Q:=O';
+        fi;
+      fi;
+      M:=proj(O,P,Q);
+      scara:=scara--M;
+    endfor;
+  fi;
+  beginfig(i) %scarabaeus
+    setbounds currentpicture to
+    (u,1.2u)--(u,-1.2u)--(-1.5u,-1.2u)--(-1.5u,1.2u)--cycle;
+    draw 12[P,Q]--12[Q,P] dashed evenly;
+    draw O--M dashed evenly;
+    pickup pencircle scaled 1pt;
+    draw scara withcolor red;
+    pickup pencircle scaled 1.4pt;
+    draw P--Q withcolor blue;
+    label.rt(btex $2l$ etex, 0.5[P,Q]);
+    dotlabel.urt(btex $P$ etex, P);
+    dotlabel.llft(btex $Q$ etex,Q);
+    dotlabel.top(btex $M$ etex,M);
+    clip currentpicture to
+    (u,1.2u)--(u,-1.2u)--(-1.5u,-1.2u)--(-1.5u,1.2u)--cycle;
+  endfig;
+  if (i/2.-floor(i/2.))=0: %gray lines every second image
+    beginfig(i/2+101)
+      setbounds currentpicture to
+      (u,1.2u)--(u,-1.2u)--(-1.5u,-1.2u)--(-1.5u,1.2u)--cycle;
+      draw P--Q withcolor 0.8 white;
+      clip currentpicture to
+      (u,1.2u)--(u,-1.2u)--(-1.5u,-1.2u)--(-1.5u,1.2u)--cycle;
+    endfig;
+  fi;
+endfor;
+
+%coordinate axes and stationary stuff
+beginfig(152);
+  setbounds currentpicture to
+  (u,1.2u)--(u,-1.2u)--(-1.5u,-1.2u)--(-1.5u,1.2u)--cycle;
+  path ida,mida;
+  drawarrow(-1.5u,0)--(1u,0);
+  drawarrow(0,-1.2u)--(0,1.2u);
+  ida:=12[A,C]--12[C,A];
+  mida:=(12[D,B]--12[B,D]);
+  draw ida dashed evenly;
+  draw mida dashed evenly;
+  label.top(btex $a$ etex, 0.5[O,O']);
+  label.top(btex $x$ etex, (0.8u,0));
+  label.rt(btex $y$ etex, (0,u));
+  label.bot(btex\itshape{\underline{scarabaeus}} etex,(-1.1u,1.1u));
+  label.bot(btex $r=l\cos 2t-a\cos t$ etex, (-u/2,1.1u));
+  dotlabel.urt(btex $O'$ etex, O');
+  dotlabel.urt(btex $O$ etex, O);
+  dotlabel.rt(btex $A$ etex,A);
+  dotlabel.rt(btex $B$ etex,B);
+  dotlabel.lft(btex $C$ etex,C);
+  dotlabel.lft(btex $D$ etex,D);
+  clip currentpicture to
+  (u,1.2u)--(u,-1.2u)--(-1.5u,-1.2u)--(-1.5u,1.2u)--cycle;
+endfig;
+
+end.
diff --git a/Master/texmf-dist/tex/latex/animate/animate.sty b/Master/texmf-dist/tex/latex/animate/animate.sty
index 19cceb22321..19d52b55ee6 100644
--- a/Master/texmf-dist/tex/latex/animate/animate.sty
+++ b/Master/texmf-dist/tex/latex/animate/animate.sty
@@ -13,7 +13,7 @@
 % Supports LaTeX->dvips->ps2pdf or pdfLaTeX workflows.
 
 \NeedsTeXFormat{LaTeX2e}
-\ProvidesPackage{animate}[2007/09/17]
+\ProvidesPackage{animate}[2007/10/23]
 \RequirePackage{keyval}
 \RequirePackage{ifthen}
 \RequirePackage{ifpdf}
@@ -29,9 +29,11 @@
     \InputIfFileExists{supp-pdf}{}{}%
     \ifx\convertMPtoPDF\@undefined%
       \PackageWarningNoLine{animate}{%
-        File `supp-pdf.tex', which is part of ConTeXt, is not available.%
+        File `supp-pdf.tex', which is part of ConTeXt, is not%
         \MessageBreak%
-        Therefore, MetaPost generated PS files cannot be embedded.%
+        available. Therefore, MetaPost generated PS files%
+        \MessageBreak%
+        cannot be embedded using pdfTeX%
       }%
     \fi%
   \fi%
@@ -64,6 +66,13 @@
   \fi
 \fi
 
+%\pdfmdfivesum is used for hashing object references of embedded files based
+%on their MD5 digest (in order to avoid multiple inclusion); if it is not
+%available, hashing will be based on the file name
+\ifx\@undefined\pdfmdfivesum
+  \def\pdfmdfivesum file #1{#1}
+\fi
+
 %creating and using global definitions
 \def\@anim@newkey#1#2{{\expandafter\xdef\csname#1\endcsname{#2}}}
 \def\@anim@getkeyval#1{\csname#1\endcsname}
@@ -123,30 +132,16 @@
 \newdimen\@anim@tmpdima %length registers for occasional use
 \newdimen\@anim@tmpdimb
 
-\ifx\pdfmdfivesum\@undefined%
-  %tests whether file is known, if so it returns identifier of form xobj
-  %otherwise `!'
-  \def\@anim@fileknown#1{% #1 filename
-    %identify file by name
-    \expandafter\ifx\csname file:#1\endcsname\relax!%
-    \else\@anim@getkeyval{file:#1}\fi%
-  }
-  %helper macro that associates filename with identifier of xobject
-  \def\@anim@makefileknown#1#2{% #1 file name, #2 obj identifier
-    \@anim@newkey{file:#1}{#2}%
-  }
-\else
-  \def\@anim@fileknown#1{% #1 file name
-    %identify file by md5sum
-    \expandafter\ifx\csname file:\pdfmdfivesum file {#1}\endcsname\relax!%
-    \else\@anim@getkeyval{file:\pdfmdfivesum file {#1}}\fi%
-  }%
-  \def\@anim@makefileknown#1#2{%
-    \@anim@newkey{file:\pdfmdfivesum file {#1}}{#2}%
-  }
-\fi
-
-\def\@anim@pt{pt}
+%tests whether file is known, if so it returns identifier of form xobj
+%otherwise `!'
+\def\@anim@fileknown#1{% #1 file name
+  %identify file by md5sum
+  \expandafter\ifx\csname file:\pdfmdfivesum file {#1}\endcsname\relax!%
+  \else\@anim@getkeyval{file:\pdfmdfivesum file {#1}}\fi%
+}
+\def\@anim@makefileknown#1#2{%
+  \@anim@newkey{file:\pdfmdfivesum file {#1}}{#2}%
+}
 
 \ifpdf
   %helper macro that typesets graphics file into savebox
@@ -173,7 +168,7 @@
     \@anim@xinline{#1}{#2}{\@anim@box}{!}% delegate Form XObject creation
     \@anim@makefileknown{#3}{\@anim@lastxform}% keep form xobject number
   }{% file known, re-use existing form xobject
-    \ifnum#2=0%
+    \ifnum#2=0
       \@anim@filebox{#3}% for size determination of first frame
       \@anim@xinline{#1}{#2}{\@anim@box}{\@anim@fileknown{#3}}%
     \else%
@@ -190,7 +185,7 @@
   %#1: @anim@num, #2:@anim@curframe@zb, #3: empty (`') or box number,
   %#4: `!' or form xobj identifier
   \def\@anim@xinline#1#2#3#4{%
-    \ifnum#2=0% measuring the size of the box (first frame only)
+    \ifnum#2=0 %measuring the size of the box (first frame only)
       \xdef\@anim@animwidth{\strip@pt\wd#3}%
       \xdef\@anim@animheight{\strip@pt\ht#3}%
       \xdef\@anim@animdepth{\strip@pt\dp#3}%
@@ -198,20 +193,19 @@
       \addtolength{\@anim@tmpdima}{\dp#3}%
       \xdef\@anim@animtotalheight{\strip@pt\@anim@tmpdima}%
     \fi%
-    \ifx #4!%
+    \ifthenelse{\equal{#4}{!}}{%
       %put graphics into XObject
       \setbox\@anim@box=\hbox{%
-        \raisebox{-\dp#3}[\@anim@animheight\@anim@pt]%
-          [\@anim@animdepth\@anim@pt]{\box#3}%
+        \raisebox{-\dp#3}[\@anim@animheight\p@][\@anim@animdepth\p@]{\box#3}%
       }%
       \immediate\pdfxform\@anim@box%
       \xdef\@anim@lastxform{\the\pdflastxform}%
       \xdef\@anim@xobject{%XObject resource entry of container XObject
         \@anim@xobject\space/im#2\space\@anim@lastxform\space 0 R%
       }%
-    \else%
+    }{%
       \xdef\@anim@xobject{\@anim@xobject\space/im#2\space #4\space 0 R}%
-    \fi%
+    }%
     \if@anim@timeline\else%
       \@anim@newocg{#1}{#2}%new ocg
       %compose content stream of container XObject
@@ -222,7 +216,7 @@
   }
 \else
   \def\@anim@xinline#1#2#3#4{%
-    \ifnum#2=0%
+    \ifnum#2=0
       \xdef\@anim@animwidth{\strip@pt\wd#3}%
       \xdef\@anim@animheight{\strip@pt\ht#3}%
       \xdef\@anim@animdepth{\strip@pt\dp#3}%
@@ -230,7 +224,7 @@
       \addtolength{\@anim@tmpdima}{\dp#3}%
       \xdef\@anim@animtotalheight{\strip@pt\@anim@tmpdima}%
     \fi%
-    \ifx #4!%
+    \ifthenelse{\equal{#4}{!}}{%
       \begingroup%
       \setlength{\unitlength}{1pt}%
       %mark BBox of the graphics
@@ -274,7 +268,7 @@
           }{% flip around horizontal axis in portrait mode
             [1 0 0 -1 0 frame@lly frame@ury add] concat%
           }ifelse
-        } ?pdfmark
+        }?pdfmark
       }%
       \begin{picture}(0,0)%
         \put(0,0){\box#3}%
@@ -287,11 +281,11 @@
       \xdef\@anim@xobject{% XObject resource entry of container XObject
         \@anim@xobject\space/im#2\space {@anim@frm@#1@#2}%
       }%
-    \else%
+    }{%
       \xdef\@anim@xobject{% XObject resource entry of container XObject
         \@anim@xobject\space/im#2\space {#4}%
       }%
-    \fi%
+    }%
     \if@anim@timeline\else%
       \@anim@newocg{#1}{#2}% new ocg
       %compose content stream of container XObject
@@ -310,7 +304,7 @@
     %append to ocg array
     \xdef\@anim@ocgs{\@anim@ocgs\space\@anim@curocg}%
     %store ref to ocg if it's a poster
-    \ifnum#2=0%
+    \ifnum#2=0
       \def\@anim@posterframe{first}%
     \else%
       \def\@anim@posterframe{last}%
@@ -332,7 +326,7 @@
       >> /PUT pdfmark
       mark {@anim@ocgs} {@anim@ocg@#1@#2} /APPEND pdfmark
     }%
-    \ifnum#2=0%
+    \ifnum#2=0
       \def\@anim@posterframe{first}%
     \else%
       \def\@anim@posterframe{last}%
@@ -382,7 +376,7 @@
 %create container XObjects for play & pause button faces;
 \ifpdf
   \def\@anim@makeppcontainer#1#2#3{% #1: @anim@num, #2: Right or Left,
-    %OCGs         #3: index of existing button face colour combination
+    % #3: index of existing button face colour combination
     \immediate\pdfobj{<</Type/OCG /Name (#1.Play#2)>>}%
     \edef\@anim@playocg{\the\pdflastobj\space 0 R}%
     \immediate\pdfobj{<< /Type/OCG /Name (#1.Pause#2)>>}%
@@ -822,7 +816,7 @@
           [-1 0 0 1 15 0] concat%  flip around vertical axis
         }if
         #2
-      } ?pdfmark mark /EP pdfmark
+      }?pdfmark mark /EP pdfmark
       grestore
     }%
   }
@@ -930,7 +924,7 @@
   \vtop{% draw boxes
     \offinterlineskip%
     \hbox{%
-      \raisebox{-\@anim@animdepth\@anim@pt}{%
+      \raisebox{-\@anim@animdepth\p@}{%
         \begin{picture}(\@anim@animwidth,\@anim@animtotalheight)%
           \put(0,0){\framebox(\@anim@animwidth,\@anim@animtotalheight){}}%
         \end{picture}%
@@ -939,7 +933,7 @@
     \if@anim@controls%
       \setlength{\@anim@tmpdima}{\@anim@btnsize}%
       \vskip 0.1\@anim@tmpdima%
-      \hbox to \@anim@animwidth\@anim@pt {%
+      \hbox to \@anim@animwidth\p@ {%
         \hss%
         \setlength{\@anim@tmpdimb}{2\@anim@tmpdima}%
         \begin{picture}(\strip@pt\@anim@tmpdimb,\strip@pt\@anim@tmpdima)%
@@ -1013,8 +1007,8 @@
       \@anim@getext{%
         \@anim@base\@anim@pad{\@anim@first}{\the\@anim@curframe}%
       }%
-      \advance\@anim@curframe by 1%
-      \advance\@anim@curframe@zb by 1%
+      \advance\@anim@curframe by \@anim@every%
+      \advance\@anim@curframe@zb by \@ne%
     \repeat%
     %draw draftbox according to dimensions of the first frame
     \@anim@filedraftbox{\@anim@base\@anim@first\@anim@ext}%
@@ -1047,8 +1041,8 @@
       \@anim@ximage{\the\@anim@num}{\the\@anim@curframe@zb}{%
         \@anim@base\@anim@pad{\@anim@first}{\the\@anim@curframe}\@anim@ext%
       }%
-      \advance\@anim@curframe by 1%
-      \advance\@anim@curframe@zb by 1%
+      \advance\@anim@curframe by \@anim@every%
+      \advance\@anim@curframe@zb by \@ne%
     \repeat%
     \xdef\@anim@frames{\the\@anim@curframe@zb}% total number
     %build timeline from optional timeline file
@@ -1058,7 +1052,7 @@
     \@anim@insertwidgets{\the\@anim@num}{%
       \@anim@getkeyval{btncol:\@anim@bgcolour:\@anim@fgcolour}}%
   \fi%
-  \global\advance\@anim@num by 1%
+  \global\advance\@anim@num by \@ne%
   \endgroup%
 }%
 
@@ -1070,7 +1064,7 @@
     \if@anim@controls%
       \setlength{\@anim@tmpdima}{\@anim@btnsize}%
       \vskip 0.1\@anim@tmpdima%
-      \hbox to \@anim@animwidth\@anim@pt {%
+      \hbox to \@anim@animwidth\p@ {%
         \hss%
         \@anim@buttonwidget{#1}{EndLeft}{EndLeft:#2}%
         \@anim@buttonwidget{#1}{StepLeft}{StepLeft:#2}%
@@ -1112,12 +1106,12 @@
         %ht & dp to keep aspect ratio
         \ifthenelse{\NOT\equal{\@anim@boxwidth}{}}{%
           \setlength{\@anim@tmpdima}{%
-            \@anim@animheight\@anim@pt%
-            *\ratio{\@anim@boxwidth\@anim@pt}{\@anim@animwidth\@anim@pt}%
+            \@anim@animheight\p@%
+            *\ratio{\@anim@boxwidth\p@}{\@anim@animwidth\p@}%
           }\xdef\@anim@animheight{\strip@pt\@anim@tmpdima}%
           \setlength{\@anim@tmpdima}{%
-            \@anim@animdepth\@anim@pt%
-            *\ratio{\@anim@boxwidth\@anim@pt}{\@anim@animwidth\@anim@pt}%
+            \@anim@animdepth\p@%
+            *\ratio{\@anim@boxwidth\p@}{\@anim@animwidth\p@}%
           }\xdef\@anim@animdepth{\strip@pt\@anim@tmpdima}%
         }{}%
       }%
@@ -1129,10 +1123,10 @@
       \equal{\@anim@boxdepth}{}%
     }{%
       \setlength{\@anim@tmpdima}{%
-        \@anim@animtotalheight\@anim@pt%
-          *\ratio{\@anim@boxwidth\@anim@pt}{\@anim@animwidth\@anim@pt}%
+        \@anim@animtotalheight\p@%
+          *\ratio{\@anim@boxwidth\p@}{\@anim@animwidth\p@}%
       }%
-      \setlength{\@anim@tmpdimb}{\@anim@tmpdima-\@anim@boxheight\@anim@pt}%
+      \setlength{\@anim@tmpdimb}{\@anim@tmpdima-\@anim@boxheight\p@}%
       \xdef\@anim@animdepth{\strip@pt\@anim@tmpdimb}%
     }{%
       \ifthenelse{% height missing
@@ -1140,10 +1134,10 @@
         \NOT\equal{\@anim@boxdepth}{}%
       }{%
         \setlength{\@anim@tmpdima}{%
-          \@anim@animtotalheight\@anim@pt%
-            *\ratio{\@anim@boxwidth\@anim@pt}{\@anim@animwidth\@anim@pt}%
+          \@anim@animtotalheight\p@%
+            *\ratio{\@anim@boxwidth\p@}{\@anim@animwidth\p@}%
         }%
-        \setlength{\@anim@tmpdimb}{\@anim@tmpdima-\@anim@boxdepth\@anim@pt}%
+        \setlength{\@anim@tmpdimb}{\@anim@tmpdima-\@anim@boxdepth\p@}%
         \xdef\@anim@animheight{\strip@pt\@anim@tmpdimb}%
       }{}%
     }%
@@ -1156,26 +1150,25 @@
       \NOT\equal{\@anim@boxdepth}{}%
     }{%
       \setlength{\@anim@tmpdima}{%
-        \@anim@animwidth\@anim@pt%
-          *\ratio{%
-             \@anim@animheight\@anim@pt+\@anim@animdepth\@anim@pt%
-           }{\@anim@animtotalheight\@anim@pt}%
+        \@anim@animwidth\p@%
+          *\ratio{\@anim@animheight\p@+\@anim@animdepth\p@}{%
+            \@anim@animtotalheight\p@}%
       }%
       \xdef\@anim@animwidth{\strip@pt\@anim@tmpdima}%
     }{}%
   }%
   %apply scaling factor
-  \setlength{\@anim@tmpdima}{\@anim@animwidth\@anim@pt}%
+  \setlength{\@anim@tmpdima}{\@anim@animwidth\p@}%
   \setlength{\@anim@tmpdima}{\@anim@boxscale\@anim@tmpdima}%
   \xdef\@anim@animwidth{\strip@pt\@anim@tmpdima}%
-  \setlength{\@anim@tmpdima}{\@anim@animheight\@anim@pt}%
+  \setlength{\@anim@tmpdima}{\@anim@animheight\p@}%
   \setlength{\@anim@tmpdima}{\@anim@boxscale\@anim@tmpdima}%
   \xdef\@anim@animheight{\strip@pt\@anim@tmpdima}%
-  \setlength{\@anim@tmpdima}{\@anim@animdepth\@anim@pt}%
+  \setlength{\@anim@tmpdima}{\@anim@animdepth\p@}%
   \setlength{\@anim@tmpdima}{\@anim@boxscale\@anim@tmpdima}%
   \xdef\@anim@animdepth{\strip@pt\@anim@tmpdima}%
-  \setlength{\@anim@tmpdima}{\@anim@animheight\@anim@pt}%
-  \addtolength{\@anim@tmpdima}{\@anim@animdepth\@anim@pt}%
+  \setlength{\@anim@tmpdima}{\@anim@animheight\p@}%
+  \addtolength{\@anim@tmpdima}{\@anim@animdepth\p@}%
   \xdef\@anim@animtotalheight{\strip@pt\@anim@tmpdima}%
 }
 
@@ -1192,9 +1185,8 @@
       \xdef\@anim@posterocgs{\@anim@posterocgs\space\@anim@posterocg}%
     \fi%
     \pdfannot
-      width \@anim@animwidth\@anim@pt
-      height \@anim@animheight\@anim@pt
-      depth \@anim@animdepth\@anim@pt
+      width \@anim@animwidth\p@ height \@anim@animheight\p@
+      depth \@anim@animdepth\p@
     {%
       /Subtype/Widget%
       /F 4% allow printing
@@ -1208,9 +1200,8 @@
         \@anim@otherjscriptkey%
       >>%
     }%
-    \hbox to \@anim@animwidth\@anim@pt {%
-      \vrule width 0pt height \@anim@animheight\@anim@pt
-             depth \@anim@animdepth\@anim@pt%
+    \hbox to \@anim@animwidth\p@ {%
+      \vrule width 0pt height \@anim@animheight\p@ depth \@anim@animdepth\p@%
       \hss%
     }%
   }%
@@ -1255,9 +1246,8 @@
         >>%
       /ANN pdfmark
     }%
-    \hbox to \@anim@animwidth\@anim@pt {%
-      \vrule width 0pt height \@anim@animheight\@anim@pt
-             depth \@anim@animdepth\@anim@pt%
+    \hbox to \@anim@animwidth\p@ {%
+      \vrule width 0pt height \@anim@animheight\p@ depth \@anim@animdepth\p@%
       \hss%
     }%
   }
@@ -1329,6 +1319,8 @@
 \newboolean{@anim@chfps} % true if \newframe or \newframe* is being used
                          % with optional `new frame rate' argument
 
+\newcount\@anim@skipfram % counter for skipped frames
+
 %user environment for animating inline graphics
 % #1: options
 % #2: frame rate (fps)
@@ -1357,12 +1349,13 @@
     \xdef\@anim@nfps{#2}% current frame rate (for use in \newframe)
   \fi%
   \global\@anim@curframe@zb=0%
+  \global\@anim@skipfram=0%
   \@anim@beginframe%
   \ignorespaces%
 }{%
   \unskip%
   \@anim@endframe{\the\@anim@num}{\the\@anim@curframe@zb}%
-  \global\advance\@anim@curframe@zb by 1%
+  \global\advance\@anim@curframe@zb by \@ne%
   \if@anim@draft\else%
     \xdef\@anim@frames{\the\@anim@curframe@zb}% total number
     %build timeline from optional timeline file
@@ -1372,7 +1365,7 @@
     \@anim@insertwidgets{\the\@anim@num}{%
       \@anim@getkeyval{btncol:\@anim@bgcolour:\@anim@fgcolour}}%
   \fi%
-  \global\advance\@anim@num by 1%
+  \global\advance\@anim@num by \@ne%
   \setboolean{@anim@inside}{false}%
   \endgroup%
 }
@@ -1391,70 +1384,74 @@
   \@ifstar\@anim@newframestar\@anim@newframe%
 }
 \newcommand{\@anim@newframe}[1][]{% #1: new frame rate
-  \if@anim@draft\else%
-    \if@anim@step\else%
-      \if@anim@timeline\else%
-        \edef\@anim@pfps{\@anim@nfps}%
-        \edef\@anim@nfps{#1}%
-        \ifx\@anim@nfps\@empty%
-          \edef\@anim@nfps{\@anim@pfps}%
-        \else%
-          \ifnum\@anim@curframe@zb=0%
-            \xdef\@anim@fps{#1}%
+  \ifnum\@anim@skipfram=0
+    \if@anim@draft\else%
+      \if@anim@step\else%
+        \if@anim@timeline\else%
+          \edef\@anim@pfps{\@anim@nfps}%
+          \edef\@anim@nfps{#1}%
+          \ifx\@anim@nfps\@empty%
+            \edef\@anim@nfps{\@anim@pfps}%
+          \else%
+            \ifnum\@anim@curframe@zb=0
+              \xdef\@anim@fps{#1}%
+            \fi%
+            %build JavaScript commands to fill the `nFpsAt' & `pFpsAt' arrays
+            \xdef\@anim@nfpsat{%
+              \@anim@nfpsat%
+              a\the\@anim@num.nFpsAt[\the\@anim@curframe@zb]=Math.abs(#1);%
+            }%
+            \xdef\@anim@pfpsat{%
+              \@anim@pfpsat%
+              a\the\@anim@num.pFpsAt[\the\@anim@curframe@zb]=%
+                Math.abs(\@anim@pfps);%
+            }%
+            \setboolean{@anim@chfps}{true}% change fps
           \fi%
-          %build JavaScript commands to fill the `nFpsAt' & `pFpsAt' arrays
-          \xdef\@anim@nfpsat{%
-            \@anim@nfpsat%
-            a\the\@anim@num.nFpsAt[\the\@anim@curframe@zb]=Math.abs(#1);%
-          }%
-          \xdef\@anim@pfpsat{%
-            \@anim@pfpsat%
-            a\the\@anim@num.pFpsAt[\the\@anim@curframe@zb]=%
-              Math.abs(\@anim@pfps);%
-          }%
-          \setboolean{@anim@chfps}{true}% change fps
         \fi%
       \fi%
     \fi%
+    \global\advance\@anim@curframe@zb by \@ne%
   \fi%
-  \global\advance\@anim@curframe@zb by 1%
   \@anim@beginframe%
   \ignorespaces%
 }
-\newcommand{\@anim@newframestar}[1][]{% starred variant for pauseing animation
-  \if@anim@draft\else%                  #1: new frame rate
-    \if@anim@step\else%
-      \if@anim@timeline\else%
-        %build JavaScript commands to fill the `pauseAt' array
-        \xdef\@anim@pauseat{%
-          \@anim@pauseat%
-          a\the\@anim@num.pauseAt[\the\@anim@curframe@zb]=1;%
-        }%
-        \setboolean{@anim@pauseframes}{true}%
-        \xdef\@anim@pfps{\@anim@nfps}%
-        \xdef\@anim@nfps{#1}%
-        \ifx\@anim@nfps\@empty%
-          \xdef\@anim@nfps{\@anim@pfps}%
-        \else%
-          \ifnum\@anim@curframe@zb=0%
-            \xdef\@anim@fps{#1}%
-          \fi%
-          %build JavaScript commands to fill the `nFpsAt' & `pFpsAt' arrays
-          \xdef\@anim@nfpsat{%
-            \@anim@nfpsat%
-            a\the\@anim@num.nFpsAt[\the\@anim@curframe@zb]=Math.abs(#1);%
-          }%
-          \xdef\@anim@pfpsat{%
-            \@anim@pfpsat%
-            a\the\@anim@num.pFpsAt[\the\@anim@curframe@zb]=%
-              Math.abs(\@anim@pfps);%
+\newcommand{\@anim@newframestar}[1][]{% starred variant for pausing animation
+  \ifnum\@anim@skipfram=0 %             #1: new frame rate
+    \if@anim@draft\else%
+      \if@anim@step\else%
+        \if@anim@timeline\else%
+          %build JavaScript commands to fill the `pauseAt' array
+          \xdef\@anim@pauseat{%
+            \@anim@pauseat%
+            a\the\@anim@num.pauseAt[\the\@anim@curframe@zb]=1;%
           }%
-          \setboolean{@anim@chfps}{true}% change fps
+          \setboolean{@anim@pauseframes}{true}%
+          \xdef\@anim@pfps{\@anim@nfps}%
+          \xdef\@anim@nfps{#1}%
+          \ifx\@anim@nfps\@empty%
+            \xdef\@anim@nfps{\@anim@pfps}%
+          \else%
+            \ifnum\@anim@curframe@zb=0
+              \xdef\@anim@fps{#1}%
+            \fi%
+            %build JavaScript commands to fill the `nFpsAt' & `pFpsAt' arrays
+            \xdef\@anim@nfpsat{%
+              \@anim@nfpsat%
+              a\the\@anim@num.nFpsAt[\the\@anim@curframe@zb]=Math.abs(#1);%
+            }%
+            \xdef\@anim@pfpsat{%
+              \@anim@pfpsat%
+              a\the\@anim@num.pFpsAt[\the\@anim@curframe@zb]=%
+                Math.abs(\@anim@pfps);%
+            }%
+            \setboolean{@anim@chfps}{true}% change fps
+          \fi%
         \fi%
       \fi%
     \fi%
+    \global\advance\@anim@curframe@zb by \@ne%
   \fi%
-  \global\advance\@anim@curframe@zb by 1%
   \@anim@beginframe%
   \ignorespaces%
 }
@@ -1469,32 +1466,38 @@
 \def\@anim@endframe#1#2{%
   \the\@anim@end%
   \end{lrbox}%
-  \if@anim@draft\else\message{< a#1, fr#2}\fi%
-  %determine size of graphics
-  \ifnum #2=0%
-    \xdef\@anim@animwidth{\strip@pt\wd\@anim@box}%
-    \ifdim\wd\@anim@box=0pt%
-      \PackageError{animate}{%
-        Contents of first frame must not have zero width%
-      }{%
-        Possible reason: \protect\begin{animateinline}{...}
-        immediately followed by \protect\newframe%
-      }%
-    \fi%
-    \xdef\@anim@animheight{\strip@pt\ht\@anim@box}%
-    \xdef\@anim@animdepth{\strip@pt\dp\@anim@box}%
-    \ifdim\ht\@anim@box=0pt%
-      \ifdim\dp\@anim@box=0pt%
+  \ifnum\@anim@skipfram=0
+    \if@anim@draft\else\message{< a#1, fr#2}\fi%
+    %determine size of graphics
+    \ifnum #2=0
+      \xdef\@anim@animwidth{\strip@pt\wd\@anim@box}%
+      \ifdim\wd\@anim@box=0pt%
         \PackageError{animate}{%
-          Contents of first frame must not have zero height%
-        }{}%
+          Contents of first frame must not have zero width%
+        }{%
+          Possible reason: \protect\begin{animateinline}{...}
+          immediately followed by \protect\newframe%
+        }%
+      \fi%
+      \xdef\@anim@animheight{\strip@pt\ht\@anim@box}%
+      \xdef\@anim@animdepth{\strip@pt\dp\@anim@box}%
+      \ifdim\ht\@anim@box=0pt%
+        \ifdim\dp\@anim@box=0pt%
+          \PackageError{animate}{%
+            Contents of first frame must not have zero height%
+          }{}%
+        \fi%
       \fi%
+      %draw draftbox according to dimensions of the first frame
+      \if@anim@draft\@anim@draftbox{\@anim@box}\fi%
     \fi%
-    %draw draftbox according to dimensions of the first frame
-    \if@anim@draft\@anim@draftbox{\@anim@box}\fi%
+    %now create Form XObject of box contents
+    \if@anim@draft\else\@anim@xinline{#1}{#2}{\@anim@box}{!}\message{>}\fi%
+  \fi%
+  \global\advance\@anim@skipfram by \@ne%
+  \ifnum\@anim@skipfram=\@anim@every
+    \global\@anim@skipfram=0%
   \fi%
-  %now create Form XObject of box contents
-  \if@anim@draft\else\@anim@xinline{#1}{#2}{\@anim@box}{!}\message{>}\fi%
 }
 
 %prints zero padded integers
@@ -1542,7 +1545,7 @@
     \ifthenelse{\equal{\@anim@inputline}{}}{}{%
       %initialise contents of each frame (to be filled with refs to XObjects
       \@anim@newkey{@anim@content@\the\@anim@curframe@zb}{}%  to be drawn)
-      \global\advance\@anim@curframe@zb by 1%
+      \global\advance\@anim@curframe@zb by \@ne%
     }%
     \read\@anim@@tmlnfile to \@anim@inputline%
     \edef\@anim@inputline{\@anim@inputline\space}%
@@ -1552,7 +1555,7 @@
   }%
   \closein\@anim@@tmlnfile%
   \xdef\@anim@transp{\@anim@frames}% total number of transp
-  \xdef\@anim@frames{\the\@anim@curframe@zb}% total number of anim positions
+  \xdef\@anim@frames{\the\@anim@curframe@zb}%total number of actual frames
   \global\@anim@curframe@zb=0%
   %reopen timeline file and build timeline
   \openin\@anim@@tmlnfile=\@anim@tmlnfile%
@@ -1572,7 +1575,8 @@
         /OC/oc\the\@anim@curframe@zb\space%
         BDC\@anim@getkeyval{@anim@content@\the\@anim@curframe@zb} EMC%
       }%
-      \global\advance\@anim@curframe@zb by 1%
+      \@anim@newkey{@anim@content@\the\@anim@curframe@zb}{}%
+      \global\advance\@anim@curframe@zb by \@ne%
     }%
     \read\@anim@@tmlnfile to \@anim@inputline%
     \edef\@anim@inputline{\@anim@inputline\space}%
@@ -1586,19 +1590,20 @@
 %reads one line of timeline file and splits into its colon separated parts
 \def\@anim@parseline#1:#2:#3;{%
   \if@anim@step\else%
-    \ifx #1*% first column is a star (pause frame)
+    \ifthenelse{\equal{#1}{*}}{%first column is a star (pause frame)
       \xdef\@anim@pauseat{%
         \@anim@pauseat%
         a\the\@anim@num.pauseAt[\the\@anim@curframe@zb]=1;%
       }%
       \setboolean{@anim@pauseframes}{true}%
-    \fi%
+    }{}%
     \xdef\@anim@pfps{\@anim@nfps}%
     \xdef\@anim@nfps{#2}%
-    \ifx\@anim@nfps\@empty% second column contains a number (new frame rate)
+    %treat the second field (new frame rate)
+    \ifx\@anim@nfps\@empty% no change of frame rate
       \xdef\@anim@nfps{\@anim@pfps}%
     \else%
-      \ifnum\@anim@curframe@zb=0%
+      \ifnum\@anim@curframe@zb=0
         \xdef\@anim@fps{#2}%
       \fi%
       %build JavaScript commands to fill the `nFpsAt' & `pFpsAt' arrays
@@ -1620,12 +1625,8 @@
 %parses 3rd column of timeline file (comma separated list of transp. specs)
 \def\@anim@parsethird#1,#2;{%
   \def\@anim@firstarg{#1}%
-  \ifx\@anim@firstarg\@empty\else%
-    \@anim@process#1x:;% process one transparency spec
-  \fi%
-  \ifx #2:\else%
-    \@anim@parsethird#2;%
-  \fi%
+  \ifthenelse{\equal{#1}{}}{}{\@anim@process#1x:;}%process one transparency spec
+  \ifthenelse{\equal{#2}{:}}{}{\@anim@parsethird#2;}%
 }
 
 \newcount\@anim@tmpcnt %scratch counter for different uses
@@ -1633,32 +1634,32 @@
 %process transparency spec, such as 123 or 456x78 or 9x0
 \def\@anim@process#1x#2;{%
   %determine number of repetitions of current transparency
-  \ifx #2:%
+  \ifthenelse{\equal{#2}{:}}{%
     \gdef\@anim@repeats{1}%
-  \else%
+  }{%
     \@anim@processsecond#2;%
-  \fi%
-  \ifnum\@anim@repeats=0% 0= means: repeat until end of timeline
+  }%
+  \ifnum\@anim@repeats=0 %0= means: repeat until end of timeline
     \edef\@anim@repeatuntil{\@anim@frames}%
   \else%
     \@anim@tmpcnt=\@anim@curframe@zb%
     \advance\@anim@tmpcnt by \@anim@repeats%
-    \ifnum\@anim@frames<\@anim@tmpcnt%
+    \ifnum\@anim@frames<\@anim@tmpcnt
       \edef\@anim@repeatuntil{\@anim@frames}%
     \else%
       \edef\@anim@repeatuntil{\the\@anim@tmpcnt}%
     \fi%
   \fi%
   %build contents of animation frames according to transparency specifications
-  \ifnum\@anim@transp<#1\else% ignore non-existing transparencies
+  \ifnum\@anim@transp<#1\else%ignore non-existing transparencies
     \ifnum\@anim@transp=#1\else%
       \@anim@tmpcnt=\@anim@curframe@zb%
-      \loop\ifnum\@anim@repeatuntil>\@anim@tmpcnt%
+      \loop\ifnum\@anim@repeatuntil>\@anim@tmpcnt
         \@anim@newkey{@anim@content@\the\@anim@tmpcnt}{%
           \@anim@getkeyval{@anim@content@\the\@anim@tmpcnt}
           q /im#1\space Do Q%
         }%
-        \advance\@anim@tmpcnt by 1%
+        \advance\@anim@tmpcnt by \@ne%
       \repeat%
     \fi%
   \fi%
@@ -1691,10 +1692,10 @@
 }
 \def\@anim@colours#1:#2;{% helper macro to get number of colour components and
   \xdef\@anim@colour{\@anim@colour\space #1}% to replace : by ` ' in the arg
-  \ifx #2!\else%
-    \global\advance\@anim@tmpcnt by 1%
+  \ifthenelse{\equal{#2}{!}}{}{%
+    \global\advance\@anim@tmpcnt by \@ne%
     \@anim@colours#2;%
-  \fi%
+  }%
 }
 \ifpdf %background frame of buttons
   \def\@anim@@@bg{%
@@ -1714,12 +1715,12 @@
   }
 \fi
 \define@key{anim@user}{buttonbg}{%background colour of buttons
-  \global\@anim@tmpcnt=1%
+  \global\@anim@tmpcnt=\@ne%
   \gdef\@anim@colour{}%
   \@anim@colours#1:!;%
   \xdef\@anim@bgcolour{\@anim@colour}%
   \ifpdf%
-    \ifnum\@anim@tmpcnt=1
+    \ifnum\@anim@tmpcnt=\@ne
       \xdef\@anim@bg{\@anim@colour\space g\space\@anim@@@bg}%
     \else%
       \ifnum\@anim@tmpcnt=3
@@ -1731,7 +1732,7 @@
       \fi%
     \fi%
   \else%
-    \ifnum\@anim@tmpcnt=1
+    \ifnum\@anim@tmpcnt=\@ne
       \xdef\@anim@bg{\@anim@colour\space setgray\space\@anim@@@bg}%
     \else%
       \ifnum\@anim@tmpcnt=3
@@ -1745,12 +1746,12 @@
   \fi%
 }
 \define@key{anim@user}{buttonfg}{%stroking colour of buttons
-  \global\@anim@tmpcnt=1%
+  \global\@anim@tmpcnt=\@ne%
   \gdef\@anim@colour{}%
   \@anim@colours#1:!;%
   \xdef\@anim@fgcolour{\@anim@colour}%
   \ifpdf%
-    \ifthenelse{\the\@anim@tmpcnt=1}{%
+    \ifthenelse{\the\@anim@tmpcnt=\@ne}{%
       \xdef\@anim@fg{\@anim@colour\space G}%
       \xdef\@anim@@@fg{\@anim@colour\space g}%
     }{%
@@ -1765,7 +1766,7 @@
       }%
     }%
   \else%
-    \ifthenelse{\the\@anim@tmpcnt=1}{%
+    \ifthenelse{\the\@anim@tmpcnt=\@ne}{%
       \xdef\@anim@fg{\@anim@colour\space setgray}%
     }{%
       \ifthenelse{\the\@anim@tmpcnt=3}{%
@@ -1857,6 +1858,9 @@
 \define@key{anim@user}{end}{%
   \@anim@end{#1}%
 }
+\define@key{anim@user}{every}{% embed every #1 frames
+  \ifnum#1<\@ne\gdef\@anim@every{1}\else\gdef\@anim@every{#1}\fi%
+}
 
 %macro to reset macros and booleans
 \def\@anim@reset{%
@@ -1892,18 +1896,19 @@
   \setboolean{@anim@timeline}{false}%
   \@anim@begin={}%
   \@anim@end={}%
+  \gdef\@anim@every{1}% frames to be included
 }
 
 %package options
 \def\@anim@@bg{}
 \def\@anim@@bgcolour{}
 \define@key{anim@pkg}{buttonbg}{%background colour of buttons
-  \global\@anim@tmpcnt=1%
+  \global\@anim@tmpcnt=\@ne%
   \gdef\@anim@colour{}%
   \@anim@colours#1:!;%
   \xdef\@anim@@bgcolour{\@anim@colour}%
   \ifpdf%
-    \ifnum\@anim@tmpcnt=1
+    \ifnum\@anim@tmpcnt=\@ne
       \xdef\@anim@@bg{\@anim@colour\space g\space\@anim@@@bg}%
     \else%
       \ifnum\@anim@tmpcnt=3
@@ -1915,7 +1920,7 @@
       \fi%
     \fi%
   \else%
-    \ifnum\@anim@tmpcnt=1
+    \ifnum\@anim@tmpcnt=\@ne
       \xdef\@anim@@bg{\@anim@colour\space setgray\space\@anim@@@bg}%
     \else%
       \ifnum\@anim@tmpcnt=3
@@ -1931,12 +1936,12 @@
 \ifpdf\def\@anim@@fg{0 G}\def\@anim@@@@fg{0 g}\else\def\@anim@@fg{0 setgray}\fi
 \def\@anim@@fgcolour{}
 \define@key{anim@pkg}{buttonfg}{%stroking colour of buttons
-  \global\@anim@tmpcnt=1%
+  \global\@anim@tmpcnt=\@ne%
   \gdef\@anim@colour{}%
   \@anim@colours#1:!;%
   \xdef\@anim@@fgcolour{\@anim@colour}%
   \ifpdf%
-    \ifthenelse{\the\@anim@tmpcnt=1}{%
+    \ifthenelse{\the\@anim@tmpcnt=\@ne}{%
       \xdef\@anim@@fg{\@anim@colour\space G}%
       \xdef\@anim@@@@fg{\@anim@colour\space g}%
     }{%
@@ -1951,7 +1956,7 @@
       }%
     }%
   \else%
-    \ifthenelse{\the\@anim@tmpcnt=1}{%
+    \ifthenelse{\the\@anim@tmpcnt=\@ne}{%
       \xdef\@anim@@fg{\@anim@colour\space setgray}%
     }{%
       \ifthenelse{\the\@anim@tmpcnt=3}{%
@@ -2116,13 +2121,12 @@
     \fi%
     %actions
     a#1.actnEndLeft=function(){%
-      var curIdx=a#1.idx;%
       \if@anim@step\else
         a#1.actnPause();%
         a#1.isPaused=false;% because it has been explicitly stopped
       \fi
+      a#1.fr[a#1.idx].state=false;%
       a#1.idx=0;%
-      a#1.fr[curIdx].state=false;%
       a#1.fr[0].state=true;%
       \if@anim@chfps
         a#1.fpsDeflt=Math.abs(\@anim@fps);%
@@ -2131,13 +2135,12 @@
       \fi%
     };%
     a#1.actnEndRight=function(){%
-      var curIdx=a#1.idx;%
       \if@anim@step\else
         a#1.actnPause();%
         a#1.isPaused=false;%
       \fi
+      a#1.fr[a#1.idx].state=false;%
       a#1.idx=\@anim@frames-1;%
-      a#1.fr[curIdx].state=false;%
       a#1.fr[a#1.idx].state=true;%
       \if@anim@chfps %frame rate from the last fps change (\@anim@nfps)
         a#1.fpsDeflt=Math.abs(\@anim@nfps);%
@@ -2146,20 +2149,23 @@
       \fi%
     };%
     a#1.actnNext=function(){%
-      var curIdx=a#1.idx;%
-      \if@anim@palindrome
-        if(a#1.idx==\@anim@frames-1){%
+      a#1.fr[a#1.idx].state=false;%
+      try{%
+        a#1.fr[++a#1.idx].state=true;%
+      }catch(e){%
+        --a#1.idx;%
+        \if@anim@palindrome%
           \if@anim@step
+            a#1.actnEndRight();%
             a#1.playsRight=false;%
           \else
+            a#1.fr[a#1.idx].state=true;%
             if(a#1.isPlaying){a#1.isPaused=true;a#1.actnPlayLeft();}%
           \fi%
-        }else{%
-          a#1.idx++;%
-        }%
-      \else
-        if(a#1.idx==\@anim@frames-1){%
-          \if@anim@step\else%
+        \else%
+          \if@anim@step
+            a#1.actnEndRight();%
+          \else%
             \if@anim@loop
               if(a#1.isPlaying){%
                 \if@anim@chfps
@@ -2168,17 +2174,13 @@
                   a#1.dt=a#1.dtDeflt;%
                 \fi
                 a#1.actnPlayRight();%
-              }%
+              }else{a#1.actnEndRight();}%
             \else
               a#1.actnEndRight();%
             \fi%
           \fi%
-        }else{%
-          a#1.idx++;%
-        }%
-      \fi
-      a#1.fr[curIdx].state=false;%
-      a#1.fr[a#1.idx].state=true;%
+        \fi%
+      }%
       \if@anim@step\else%
         \if@anim@chfps
           if(%
@@ -2197,20 +2199,23 @@
       \fi%
     };%
     a#1.actnPrev=function(){%
-      var curIdx=a#1.idx;%
-      \if@anim@palindrome
-        if(a#1.idx==0){%
+      a#1.fr[a#1.idx].state=false;%
+      try{%
+        a#1.fr[--a#1.idx].state=true;%
+      }catch(e){%
+        ++a#1.idx;%
+        \if@anim@palindrome%
           \if@anim@step
+            a#1.actnEndLeft();%
             a#1.playsRight=true;%
           \else
+            a#1.fr[a#1.idx].state=true;%
             if(a#1.isPlaying){a#1.isPaused=true;a#1.actnPlayRight();}%
           \fi%
-        }else{%
-          a#1.idx--;%
-        }%
-      \else
-        if(a#1.idx==0){%
-          \if@anim@step\else%
+        \else%
+          \if@anim@step
+            a#1.actnEndLeft();%
+          \else%
             \if@anim@loop
               if(a#1.isPlaying){%
                 \if@anim@chfps
@@ -2219,17 +2224,13 @@
                   a#1.dt=a#1.dtDeflt;%
                 \fi
                 a#1.actnPlayLeft();%
-              }%
+              }else{a#1.actnEndLeft();}%
             \else
               a#1.actnEndLeft();%
             \fi%
           \fi%
-        }else{%
-          a#1.idx--;%
-        }%
-      \fi
-      a#1.fr[curIdx].state=false;%
-      a#1.fr[a#1.idx].state=true;%
+        \fi%
+      }%
       \if@anim@step\else%
         \if@anim@chfps
           if(%