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Diffstat (limited to 'Master/texmf-dist/metapost/slideshow/sshowintro.mp')
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1 files changed, 206 insertions, 0 deletions
diff --git a/Master/texmf-dist/metapost/slideshow/sshowintro.mp b/Master/texmf-dist/metapost/slideshow/sshowintro.mp new file mode 100644 index 00000000000..7dd856ec52e --- /dev/null +++ b/Master/texmf-dist/metapost/slideshow/sshowintro.mp @@ -0,0 +1,206 @@ +%% +%% A quick presentation about the macros +%% + +input pathalong; +input slideshow; + +author("Patrick TJ McPhee"); +title("Introducing slide-show macros"); +keywords("presentations metapost"); +copyright("Copyright 2001 Patrick TJ McPhee. You may redistribute and modify for any purpose, but must acknowledge significant quotation."); + +continue; + +nextfig; + defaultscale := 2; + draw textunder((0,.5in){up}..{right}(2in,1in), "Introducing") shifted (1in,3in) withcolor textcolour; +endfig; + +nextfig; + blabel.rt("Slide Show Macros", (2in,2in)); +endfig; + +defaultscale := 1; + +nextfig; + draw pathalong((0,.5in){up}..{right}(2in,1in), "by Patrick TJ McPhee") shifted (1in,3in) withcolor textcolour; + hyperdest("Start"); +endfig; + +discontinue; + +header("Rationale"); + +bpoint("Primarily an intellectual exercise"); +bpoint("But may be useful for graphics-intensive presentations which don't use much text"); +bpoint("Slideshow provides support for this irritating style of bullet presentation"); +bpoint("And writes out some pdfmarks, which you would otherwise have to look up yourself"); + +picture dimtieb; +dimtieb := image(draw pathalong((0,.5in){up}..(.5in,1in){right}..(.5in, 0in){-1,-1}..{.1,-1}(.5in,-.5in), + "Did I mention the intellectual exercise bit?") withcolor textcolour;); +dimtieb := dimtieb rotatedaround(center dimtieb, 90); +dimtieb := dimtieb shifted - llcorner dimtieb; + +bpoint(dimtieb); + +discontinue; + +header("Current practice"); + +bpoint("A presentation might have several components:"); + +vardef procbox(expr s) = + save p; + picture p; + + p := s infont defaultfont scaled defaultscale; + pickup thin nib; + addto p doublepath bbox p withpen currentpen; + p +enddef; + +vardef resultbox(expr s) = + save p; + picture p; + + p := s infont defaultfont scaled defaultscale; + pickup thin nib; + addto p doublepath (ulcorner p)..tension 2..(urcorner p)..(lrcorner p).. + tension 2..(llcorner p)..cycle + withpen currentpen; + p +enddef; + +picture lt, mp, dvi, gs, postp, vres, pres, fpres; + +lt := procbox("laTeX") shifted (.05 lawidth, .2laheight); +mp := procbox("metapost") shifted (.05 lawidth, .1laheight); +dvi := procbox("DVI processor") shifted (.2 lawidth, .15laheight); +vres := resultbox("viewable result") shifted (.4 lawidth, .15 laheight); +gs := procbox("distiller") shifted (.65 lawidth, .15laheight); +pres := resultbox("presentation") shifted (.8 lawidth, .15laheight); +postp := procbox("post-processor") shifted (.7 lawidth, .3laheight); +fpres := resultbox("final presentation") shifted (.45 lawidth, .3laheight); + +nextfig; + bullet.in("text prepared with laTeX"); + draw lt withcolor white; +endfig; + +nextfig; + bullet.in("graphics prepared with metapost (okay, 2 components)"); + draw mp withcolor red; +endfig; + +nextfig; + bullet.in("which are combined with dvi processing software"); + pickup thin nib; + drawarrow (.5[lrcorner mp,urcorner mp]){right}..{right}(.5[llcorner dvi,ulcorner dvi]) + withcolor .25[red,white]; + drawarrow (.5[lrcorner lt,urcorner lt]){right}..{right}(.5[llcorner dvi,ulcorner dvi]) + withcolor .25[white,red]; + + draw dvi withcolor .5[white,red]; +endfig; + +nextfig; + bullet.in("the resulting postscript is viewable, but must be distilled into the presentation"); + pickup thin nib; + drawarrow (.5[lrcorner dvi,urcorner dvi])..(.5[llcorner vres,ulcorner vres]) + withcolor .1[.5[red,white],green]; + draw vres withcolor .5[.5[white,red],green]; +endfig; + +nextfig; + pickup thin nib; + drawarrow (.5[lrcorner vres,urcorner vres])..(.5[llcorner gs,ulcorner gs]) + withcolor .6[.5[red,white],green]; + draw gs withcolor .75[.5[white,red],green]; +endfig; + +nextfig; + pickup thin nib; + drawarrow (.5[lrcorner gs,urcorner gs])..(.5[llcorner pres,ulcorner pres]) + withcolor .75[.5[white,red],green]; + draw pres withcolor green; +endfig; + +nextfig; + pickup thin nib; + bullet.in("and it's often post-processed to make it slick and professional-looking like this one"); + pickup thin nib; + drawarrow (.5[lrcorner pres,urcorner pres]){right}..{left}(.5[lrcorner postp,urcorner postp]) + withcolor .5[green,white]; + draw postp withcolor .75[green,white]; +endfig; + +nextfig; + pickup thin nib; + drawarrow (.5[llcorner postp,ulcorner postp])..(.5[lrcorner fpres,urcorner fpres]) + withcolor .95[green,white]; + draw fpres withcolor white; +endfig; + +discontinue; + +header("The slideshow advantage"); +bpoint("With the slideshow macros:"); + +nextfig; + bullet.in("Only one input format is possible"); + draw mp withcolor red; +endfig; + +nextfig; + bullet.in("Which converts rapidly into viewable output"); + pickup thick nib; + drawarrow (.5[lrcorner mp,urcorner mp]){right}..{right}(.5[llcorner vres,ulcorner vres]) + withcolor .5[red,.5[.5[white,red],green]]; + % I hope it's clear by this point that I'm playing this for laughs + draw vres withcolor .5[.5[white,red],green]; +endfig; + +nextfig; + bullet.in("And then distills into the presentation"); + pickup thick nib; + drawarrow (.5[lrcorner vres,urcorner vres]){right} + ..{right}(.5[llcorner fpres,ulcorner fpres]) + withcolor .5[.5[.5[white,red],green],white]; + draw fpres withcolor white; +endfig; + +nextfig; + bullet.in("From which no post-processing is needed, since there are no post-processors supporting these macros"); +endfig; + +discontinue; +header("Limitations"); + +bpoint("Metapost doesn't handle text very well"); +bpoint("It's difficult to include non-metapost graphics (e.g., bit-maps)"); +bpoint("There's no provision for producing print-only versions of the information"); +bpoint("There's no concept of presentation styles"); +bpoint("It generally requires some configuration of ghostscript and metapost, especially if you use math"); +bpoint("The other methods for producing presentations using TeX-family tools aren't as complicated as I suggested"); +bpoint.in("I personally use my own plain-TeX style with just TeX, metapost, and dvipdfm"); + +discontinue; +header("Strengths"); + +bpoint("Measurably less complex than metaobj"); +bpoint("Small and simple, so shouldn't conflict with too many truly useful metapost packages"); +bpoint("The ability to build up drawings can be helpful"); +bpoint("And so are the pdfmarks"); +bpoint("It's useful for cases where laTeX is used as a framework for a bunch of metapost slides"); +bpoint("So it was worth uploading to CTAN, but it's not going to change the world"); + +discontinue; +header(nullpicture); + +nextfig; + hyperlabel(breaktowidth("Thanks for sticking to the end. Click on this text to start over.", .5lawidth)(ignore), (.5lawidth, .5laheight), "Start"); +endfig; + +end |