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<title>Ipelib: IpeLine class Reference</title>
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<div class="qindex"><a class="qindex" href="index.html">Main Page</a> | <a class="qindex" href="modules.html">Modules</a> | <a class="qindex" href="hierarchy.html">Class Hierarchy</a> | <a class="qindex" href="annotated.html">Class List</a> | <a class="qindex" href="functions.html">Class Members</a></div>
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<h1>IpeLine Class Reference<br>
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[<a class="el" href="group__geo.html">Ipe Geometry</a>]</small>
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<a href="#_details">More...</a>
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<a href="class_ipe_line-members.html">List of all members.</a><h2>Public Member Functions</h2>
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<li><a class="el" href="class_ipe_line.html#a0">IpeLine</a> ()
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<li><a class="el" href="class_ipe_line.html#a1">IpeLine</a> (const <a class="el" href="class_ipe_vector.html">IpeVector</a> &p, const <a class="el" href="class_ipe_vector.html">IpeVector</a> &dir)
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<li>double <a class="el" href="class_ipe_line.html#a2">Side</a> (const <a class="el" href="class_ipe_vector.html">IpeVector</a> &p) const
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<li><a class="el" href="class_ipe_vector.html">IpeVector</a> <a class="el" href="class_ipe_line.html#a3">Normal</a> () const
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<li>double <a class="el" href="class_ipe_line.html#a4">Distance</a> (const <a class="el" href="class_ipe_vector.html">IpeVector</a> &v) const
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<li>bool <a class="el" href="class_ipe_line.html#a5">Intersects</a> (const <a class="el" href="class_ipe_line.html">IpeLine</a> &line, <a class="el" href="class_ipe_vector.html">IpeVector</a> &pt)
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<li><a class="el" href="class_ipe_vector.html">IpeVector</a> <a class="el" href="class_ipe_line.html#a6">Project</a> (const <a class="el" href="class_ipe_vector.html">IpeVector</a> &v) const
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<li><a class="el" href="class_ipe_vector.html">IpeVector</a> <a class="el" href="class_ipe_line.html#a7">Dir</a> () const
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<h2>Static Public Member Functions</h2>
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<li><a class="el" href="class_ipe_line.html">IpeLine</a> <a class="el" href="class_ipe_line.html#e0">Through</a> (const <a class="el" href="class_ipe_vector.html">IpeVector</a> &p, const <a class="el" href="class_ipe_vector.html">IpeVector</a> &q)
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<h2>Public Attributes</h2>
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<li><a class="el" href="class_ipe_vector.html">IpeVector</a> <a class="el" href="class_ipe_line.html#o0">iP</a>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
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<hr><h2>Constructor & Destructor Documentation</h2>
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<a class="anchor" name="a0" doxytag="IpeLine::IpeLine" ></a><p>
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<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> IpeLine::IpeLine </td>
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<td class="md" valign="top">( </td>
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<td class="mdname1" valign="top" nowrap> </td>
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<td class="md" valign="top"> ) </td>
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<td class="md" nowrap><code> [inline, explicit]</code></td>
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<table cellspacing=5 cellpadding=0 border=0>
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Create default line (x-axis).
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<a class="anchor" name="a1" doxytag="IpeLine::IpeLine" ></a><p>
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<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> IpeLine::IpeLine </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top">const <a class="el" href="class_ipe_vector.html">IpeVector</a> & </td>
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<td class="mdname" nowrap> <em>p</em>, </td>
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<td class="md" nowrap>const <a class="el" href="class_ipe_vector.html">IpeVector</a> & </td>
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<td class="mdname" nowrap> <em>dir</em></td>
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<td class="md">) </td>
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<td class="md" colspan="2"><code> [explicit]</code></td>
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Construct a line from <em>p</em> with direction <em>dir</em>.
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Asserts unit length of <em>dir</em>. </td>
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<hr><h2>Member Function Documentation</h2>
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<a class="anchor" name="e0" doxytag="IpeLine::Through" ></a><p>
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<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> <a class="el" href="class_ipe_line.html">IpeLine</a> IpeLine::Through </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top">const <a class="el" href="class_ipe_vector.html">IpeVector</a> & </td>
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<td class="mdname" nowrap> <em>p</em>, </td>
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<td class="md" nowrap>const <a class="el" href="class_ipe_vector.html">IpeVector</a> & </td>
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<td class="mdname" nowrap> <em>q</em></td>
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<td class="md">) </td>
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<td class="md" colspan="2"><code> [static]</code></td>
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Construct a line through two points.
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<a class="anchor" name="a2" doxytag="IpeLine::Side" ></a><p>
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> double IpeLine::Side </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top">const <a class="el" href="class_ipe_vector.html">IpeVector</a> & </td>
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<td class="mdname1" valign="top" nowrap> <em>p</em> </td>
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<td class="md" valign="top"> ) </td>
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<td class="md" nowrap> const</td>
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Result is > 0, = 0, < 0 if point lies to the left, on, to the right.
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<a class="anchor" name="a3" doxytag="IpeLine::Normal" ></a><p>
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<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> <a class="el" href="class_ipe_vector.html">IpeVector</a> IpeLine::Normal </td>
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<td class="md" valign="top">( </td>
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<td class="mdname1" valign="top" nowrap> </td>
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<td class="md" valign="top"> ) </td>
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<td class="md" nowrap> const<code> [inline]</code></td>
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Return a normal vector pointing to the left of the directed line.
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<a class="anchor" name="a4" doxytag="IpeLine::Distance" ></a><p>
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<td class="md" nowrap valign="top"> double IpeLine::Distance </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top">const <a class="el" href="class_ipe_vector.html">IpeVector</a> & </td>
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<td class="mdname1" valign="top" nowrap> <em>v</em> </td>
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<td class="md" valign="top"> ) </td>
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<td class="md" nowrap> const</td>
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Returns distance between line and <em>v</em>.
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<a class="anchor" name="a5" doxytag="IpeLine::Intersects" ></a><p>
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<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> bool IpeLine::Intersects </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top">const <a class="el" href="class_ipe_line.html">IpeLine</a> & </td>
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<td class="mdname" nowrap> <em>line</em>, </td>
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<td class="md" nowrap><a class="el" href="class_ipe_vector.html">IpeVector</a> & </td>
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<td class="mdname" nowrap> <em>pt</em></td>
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<td class="md">) </td>
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<td class="md" colspan="2"></td>
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<table cellspacing=5 cellpadding=0 border=0>
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Does this line intersect <em>line</em>? If so, computes intersection point.
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<a class="anchor" name="a6" doxytag="IpeLine::Project" ></a><p>
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<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> <a class="el" href="class_ipe_vector.html">IpeVector</a> IpeLine::Project </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top">const <a class="el" href="class_ipe_vector.html">IpeVector</a> & </td>
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<td class="mdname1" valign="top" nowrap> <em>v</em> </td>
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<td class="md" valign="top"> ) </td>
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<td class="md" nowrap> const</td>
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Orthogonally project point <em>v</em> onto the line.
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<a class="anchor" name="a7" doxytag="IpeLine::Dir" ></a><p>
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<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> <a class="el" href="class_ipe_vector.html">IpeVector</a> IpeLine::Dir </td>
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<td class="md" valign="top">( </td>
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<td class="mdname1" valign="top" nowrap> </td>
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<td class="md" valign="top"> ) </td>
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<td class="md" nowrap> const<code> [inline]</code></td>
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Return direction of line.
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<hr><h2>Member Data Documentation</h2>
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<a class="anchor" name="o0" doxytag="IpeLine::iP" ></a><p>
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<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> <a class="el" href="class_ipe_vector.html">IpeVector</a> <a class="el" href="class_ipe_line.html#o0">IpeLine::iP</a>
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<table cellspacing=5 cellpadding=0 border=0>
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<hr>The documentation for this class was generated from the following files:<ul>
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<li>ipegeo.h<li>ipegeo.cpp</ul>
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