mirror of https://github.com/dspinellis/UMLGraph
52 lines
1.1 KiB
XML
52 lines
1.1 KiB
XML
<?xml version="1.0" ?>
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<!-- $Id$ -->
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<notes>
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One specifies a sequence diagram using <em>pic</em> macros to define
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objects and method invocations.
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The <a href="http://www.gnu.org/software/plotutils/plotutils.html">GNU plotutils</a>
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<em>pic2plot</em> program can then process the sequence diagram to create a
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PNG, PNM, (pseudo)GIF, SVG, AI, Postscript, CGM, FIG, PCL, HPGL, Regis, or TEK
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drawing.
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<p />
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The following is an example of a specification and the resulting UML sequence
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diagram:
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<table>
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<tr><td>
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<fmtcode ext="pic">
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.PS
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copy "sequence.pic";
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# Define the objects
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object(O,"o:Toolkit");
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placeholder_object(P);
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step();
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# Message sequences
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active(O);
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step();
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active(O);
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message(O,O,"callbackLoop()");
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inactive(O);
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create_message(O,P,"p:Peer");
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message(O,P,"handleExpose()");
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active(P);
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return_message(P,O,"");
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inactive(P);
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destroy_message(O,P);
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inactive(O);
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# Complete the lifelines
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step();
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complete(O);
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.PE
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</fmtcode>
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</td><td>
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<img src="seq-eg.gif" alt="Simple UML sequence diagram" />
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</td></tr></table>
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The diagram is drawn from its source code specification using a command
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like:
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<fmtcode ext="sh">
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pic2plot -Tgif FILENAME.pic >FILENAME.gif
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</fmtcode>
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</notes>
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