45 lines
6.7 KiB
HTML
45 lines
6.7 KiB
HTML
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>The Be Book - System Overview - The Interface Kit</title><link rel="stylesheet" href="be_book.css" type="text/css" media="all" /><link rel="shortcut icon" type="image/vnd.microsoft.icon" href="./images/favicon.ico" /><!--[if IE]>
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<link rel="stylesheet" type="text/css" href="be_book_ie.css" />
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<![endif]--><meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /><meta name="keywords" content="Access, BeOS, BeBook, API" /><link rel="start" href="index.html" title="The Be Book" /><link rel="up" href="TheInterfaceKit_Overview.html" title="The Interface Kit" /><link rel="prev" href="BSeparatorItem_Overview.html" title="BSeparatorItem" /><link rel="next" href="BShapeIterator_Overview.html" title="BShapeIterator" /></head><body><div id="header"><div id="headerT"><div id="headerTL"><a accesskey="p" href="BSeparatorItem_Overview.html" title="BSeparatorItem"><img src="./images/navigation/prev.png" alt="Prev" /></a> <a accesskey="u" href="TheInterfaceKit_Overview.html" title="The Interface Kit"><img src="./images/navigation/up.png" alt="Up" /></a> <a accesskey="n" href="BShapeIterator_Overview.html" title="BShapeIterator"><img src="./images/navigation/next.png" alt="Next" /></a></div><div id="headerTR"><div id="navigpeople"><a href="http://www.haiku-os.org"><img src="./images/People_24.png" alt="haiku-os.org" title="Visit The Haiku Website" /></a></div><div class="navighome" title="Home"><a accesskey="h" href="index.html"><img src="./images/navigation/home.png" alt="Home" /></a></div><div class="navigboxed" id="navigindex"><a accesskey="i" href="ClassIndex.html" title="Index">I</a></div><div class="navigboxed" id="naviglang" title="English">en</div></div><div id="headerTC">The Be Book - System Overview - The Interface Kit</div></div><div id="headerB">Prev: <a href="BSeparatorItem_Overview.html">BSeparatorItem</a> Up: <a href="TheInterfaceKit_Overview.html">The Interface Kit</a> Next: <a href="BShapeIterator_Overview.html">BShapeIterator</a></div><hr /></div><div class="section"><div xmlns="" xmlns:d="http://docbook.org/ns/docbook" class="titlepage"><div><div xmlns:d="http://docbook.org/ns/docbook"><h2 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="BShape_Overview"></a>BShape</h2></div></div></div><a id="id556168" class="indexterm"></a><p>
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The <a class="link" href="BShape.html" title="BShape"><code class="classname">BShape</code></a>
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class provides a powerful means of representing the outline of
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any shape that can be comprised of lines or Beziér curves.
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</p><p>
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The <a class="link" href="BShapeIterator.html" title="BShapeIterator"><code class="classname">BShapeIterator</code></a>
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class provides a means for utilizing
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<a class="link" href="BShape.html" title="BShape"><code class="classname">BShape</code></a>
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objects in your own code. You can also use
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<a class="link" href="BShape.html" title="BShape"><code class="classname">BShape</code></a>
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objects to obtain outlines of characters in a
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<a class="link" href="BFont.html" title="BFont"><code class="classname">BFont</code></a> by calling
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<a class="link" href="BFont.html#BFont_GetGlyphShapes" title="GetGlyphShapes()"><code class="methodname">BFont::GetGlyphShapes()</code></a>.
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</p><div class="section"><div xmlns="" xmlns:d="http://docbook.org/ns/docbook" class="titlepage"><div><hr /><div xmlns:d="http://docbook.org/ns/docbook"><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="id556238"></a>Creating a BShape</h3></div></div></div><p>
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A <a class="link" href="BShape.html" title="BShape"><code class="classname">BShape</code></a>
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is essentially a list of graphics commands, of which there are
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four types:
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</p><ul class="itemizedlist"><li><p>
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MoveTo. This sets the BShape's coordinates to a specified point in
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the shape's space.
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</p></li><li><p>
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LineTo. This represents a line from the current point to the next
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point in the shape.
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</p></li><li><p>
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BeziérTo. This represents a Bezier curve, connecting the current
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point to a new point, with other points serving to control the shape of
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the curve.
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</p></li><li><p>
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Close. This indicates the end of the shape's command list.
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</p></li></ul><p>
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Functions by the same names are used to add the corresponding commands to
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the BShape object. For example, to create a BShape that represents two
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vertical lines, the following code might be used:
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</p><pre class="programlisting example cpp"><code class="classname">BShape</code> <code class="varname">shape</code>;
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<code class="varname">shape</code>.<code class="methodname">MoveTo</code>(0,0);
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<code class="varname">shape</code>.<code class="methodname">LineTo</code>(0,100);
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<code class="varname">shape</code>.<code class="methodname">MoveTo</code>(5,0);
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<code class="varname">shape</code>.<code class="methodname">LineTo</code>(5,100);</pre></div></div><div id="footer"><hr /><div id="footerT">Prev: <a href="BSeparatorItem_Overview.html">BSeparatorItem</a> Up: <a href="TheInterfaceKit_Overview.html">The Interface Kit</a> Next: <a href="BShapeIterator_Overview.html">BShapeIterator</a> </div><div id="footerB"><div id="footerBL"><a href="BSeparatorItem_Overview.html" title="BSeparatorItem"><img src="./images/navigation/prev.png" alt="Prev" /></a> <a href="TheInterfaceKit_Overview.html" title="The Interface Kit"><img src="./images/navigation/up.png" alt="Up" /></a> <a href="BShapeIterator_Overview.html" title="BShapeIterator"><img src="./images/navigation/next.png" alt="Next" /></a></div><div id="footerBR"><div><a href="http://www.haiku-os.org"><img src="./images/People_24.png" alt="haiku-os.org" title="Visit The Haiku Website" /></a></div><div class="navighome" title="Home"><a accesskey="h" href="index.html"><img src="./images/navigation/home.png" alt="Home" /></a></div></div><div id="footerBC"><a href="http://www.access-company.com/home.html" title="ACCESS Co."><img alt="Access Company" src="./images/access_logo.png" /></a></div></div></div><div id="licenseFooter"><div id="licenseFooterBL"><a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/" title="Creative Commons License"><img alt="Creative Commons License" style="border-width:0" src="https://licensebuttons.net/l/by-nc-nd/3.0/88x31.png" /></a></div><div id="licenseFooterBR"><a href="./LegalNotice.html">Legal Notice</a></div><div id="licenseFooterBC"><span id="licenseText">This work is licensed under a
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<a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/">Creative
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Commons Attribution-Non commercial-No Derivative Works 3.0 License</a>.</span></div></div></body></html>
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