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<a href="#pub-static-methods">Static Public Member Functions</a> |
<a href="#pub-static-attribs">Static Public Attributes</a> </div>
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<h1>geos::geomgraph::Quadrant Class Reference</h1> </div>
</div>
<div class="contents">
<!-- doxytag: class="geos::geomgraph::Quadrant" -->
<p><code>#include <<a class="el" href="Quadrant_8h_source.html">Quadrant.h</a>></code></p>
<p><a href="classgeos_1_1geomgraph_1_1Quadrant-members.html">List of all members.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-static-methods"></a>
Static Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1geomgraph_1_1Quadrant.html#a279750be706d8715796895af99dc0760">quadrant</a> (double dx, double dy)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1geomgraph_1_1Quadrant.html#a4c21ef949e6aa9c970645fb691a826c7">quadrant</a> (const <a class="el" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a> &p0, const <a class="el" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a> &p1)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1geomgraph_1_1Quadrant.html#a1fea506c4c5bd7fdc6026793d1845cc4">isOpposite</a> (int quad1, int quad2)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aad6e9e583777c73d76f42cf5c414473f"></a><!-- doxytag: member="geos::geomgraph::Quadrant::commonHalfPlane" ref="aad6e9e583777c73d76f42cf5c414473f" args="(int quad1, int quad2)" -->
static int </td><td class="memItemRight" valign="bottom"><b>commonHalfPlane</b> (int quad1, int quad2)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1geomgraph_1_1Quadrant.html#ab97f781360cbfd139780d6640d7b4d40">isInHalfPlane</a> (int quad, int halfPlane)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classgeos_1_1geomgraph_1_1Quadrant.html#ab65f2d9b05d9666dc4f5a41c6027f6a1">isNorthern</a> (int quad)</td></tr>
<tr><td colspan="2"><h2><a name="pub-static-attribs"></a>
Static Public Attributes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a56944e67bf845c59636398219df9ebe7"></a><!-- doxytag: member="geos::geomgraph::Quadrant::NE" ref="a56944e67bf845c59636398219df9ebe7" args="" -->
static const int </td><td class="memItemRight" valign="bottom"><b>NE</b> = 0</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a2b52ec9c99f564fbacee995b1a83ca9a"></a><!-- doxytag: member="geos::geomgraph::Quadrant::NW" ref="a2b52ec9c99f564fbacee995b1a83ca9a" args="" -->
static const int </td><td class="memItemRight" valign="bottom"><b>NW</b> = 1</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a31fa6e7c513521ad3ad060aedb74df96"></a><!-- doxytag: member="geos::geomgraph::Quadrant::SW" ref="a31fa6e7c513521ad3ad060aedb74df96" args="" -->
static const int </td><td class="memItemRight" valign="bottom"><b>SW</b> = 2</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a54dc4f00acc8636ec5b05caf846f944a"></a><!-- doxytag: member="geos::geomgraph::Quadrant::SE" ref="a54dc4f00acc8636ec5b05caf846f944a" args="" -->
static const int </td><td class="memItemRight" valign="bottom"><b>SE</b> = 3</td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>Utility functions for working with quadrants, which are numbered as follows: </p>
<pre>
1 | 0
--+--
2 | 3
</p>
<pre>
</pre></pre><hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="ab97f781360cbfd139780d6640d7b4d40"></a><!-- doxytag: member="geos::geomgraph::Quadrant::isInHalfPlane" ref="ab97f781360cbfd139780d6640d7b4d40" args="(int quad, int halfPlane)" -->
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<td class="memname">static bool geos::geomgraph::Quadrant::isInHalfPlane </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"> <em>quad</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>halfPlane</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td><code> [static]</code></td>
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<div class="memdoc">
<p>Returns whether the given quadrant lies within the given halfplane (specified by its right-hand quadrant). </p>
</div>
</div>
<a class="anchor" id="ab65f2d9b05d9666dc4f5a41c6027f6a1"></a><!-- doxytag: member="geos::geomgraph::Quadrant::isNorthern" ref="ab65f2d9b05d9666dc4f5a41c6027f6a1" args="(int quad)" -->
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<td class="memname">static bool geos::geomgraph::Quadrant::isNorthern </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"> <em>quad</em></td>
<td> ) </td>
<td><code> [static]</code></td>
</tr>
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<div class="memdoc">
<p>Returns true if the given quadrant is 0 or 1. </p>
</div>
</div>
<a class="anchor" id="a1fea506c4c5bd7fdc6026793d1845cc4"></a><!-- doxytag: member="geos::geomgraph::Quadrant::isOpposite" ref="a1fea506c4c5bd7fdc6026793d1845cc4" args="(int quad1, int quad2)" -->
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<td class="memname">static bool geos::geomgraph::Quadrant::isOpposite </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"> <em>quad1</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>quad2</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td><code> [static]</code></td>
</tr>
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<div class="memdoc">
<p>Returns true if the quadrants are 1 and 3, or 2 and 4 </p>
</div>
</div>
<a class="anchor" id="a279750be706d8715796895af99dc0760"></a><!-- doxytag: member="geos::geomgraph::Quadrant::quadrant" ref="a279750be706d8715796895af99dc0760" args="(double dx, double dy)" -->
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<td class="memname">static int geos::geomgraph::Quadrant::quadrant </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"> <em>dx</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">double </td>
<td class="paramname"> <em>dy</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td><code> [static]</code></td>
</tr>
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<p>Returns the quadrant of a directed line segment (specified as x and y displacements, which cannot both be 0).</p>
<dl><dt><b>Exceptions:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>IllegalArgumentException</em> </td><td>if the displacements are both 0 </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="a4c21ef949e6aa9c970645fb691a826c7"></a><!-- doxytag: member="geos::geomgraph::Quadrant::quadrant" ref="a4c21ef949e6aa9c970645fb691a826c7" args="(const geom::Coordinate &p0, const geom::Coordinate &p1)" -->
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<td class="memname">static int geos::geomgraph::Quadrant::quadrant </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a> & </td>
<td class="paramname"> <em>p0</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classgeos_1_1geom_1_1Coordinate.html">geom::Coordinate</a> & </td>
<td class="paramname"> <em>p1</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td><code> [static]</code></td>
</tr>
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<div class="memdoc">
<p>Returns the quadrant of a directed line segment from p0 to p1.</p>
<dl><dt><b>Exceptions:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>IllegalArgumentException</em> </td><td>if the points are equal </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="Quadrant_8h_source.html">Quadrant.h</a></li>
</ul>
</div>
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