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<title>Boost Polygon Library: Interval Concept</title>
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<h3 class="navbar">Contents</h3>
<ul>
<li><a href="index.htm">Boost.Polygon Main Page</a></li>
<li><a href="gtl_design_overview.htm">Design Overview</a></li>
<li><a href="gtl_isotropy.htm">Isotropy</a></li>
<li><a href="gtl_coordinate_concept.htm">Coordinate Concept</a></li>
<li>Interval Concept</li>
<li><a href="gtl_point_concept.htm">Point Concept</a></li>
<li><a href="gtl_rectangle_concept.htm">Rectangle Concept</a></li>
<li><a href="gtl_polygon_90_concept.htm">Polygon 90 Concept</a></li>
<li><a href="gtl_polygon_90_with_holes_concept.htm">Polygon 90 With Holes Concept</a></li>
<li><a href="gtl_polygon_45_concept.htm">Polygon 45 Concept</a></li>
<li><a href="gtl_polygon_45_with_holes_concept.htm">Polygon 45 With Holes Concept</a></li>
<li><a href="gtl_polygon_concept.htm">Polygon Concept</a></li>
<li><a href="gtl_polygon_with_holes_concept.htm">Polygon With Holes Concept</a></li>
<li><a href="gtl_polygon_90_set_concept.htm">Polygon 90 Set Concept</a></li>
<li><a href="gtl_polygon_45_set_concept.htm">Polygon 45 Set Concept</a></li>
<li><a href="gtl_polygon_set_concept.htm">Polygon Set Concept</a></li>
<li><a href="gtl_connectivity_extraction_90.htm">Connectivity Extraction 90</a></li>
<li><a href="gtl_connectivity_extraction_45.htm">Connectivity Extraction 45</a></li>
<li><a href="gtl_connectivity_extraction.htm">Connectivity Extraction</a></li>
<li><a href="gtl_property_merge_90.htm">Property Merge 90</a></li>
<li><a href="gtl_property_merge_45.htm">Property Merge 45</a></li>
<li><a href="gtl_property_merge.htm">Property Merge</a></li>
</ul>
<h3 class="navbar">Other Resources</h3>
<ul>
<li><a href="GTL_boostcon2009.pdf">GTL Boostcon 2009 Paper</a></li>
<li><a href="GTL_boostcon_draft03.pdf">GTL Boostcon 2009
Presentation</a></li>
<li><a href="analysis.htm">Performance Analysis</a></li>
<li><a href="gtl_tutorial.htm">Layout Versus Schematic Tutorial</a></li>
<li><a href="gtl_minkowski_tutorial.htm">Minkowski Sum Tutorial</a></li>
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<br>
<p>
</p><h1>Interval Concept</h1>
<p>
<p>The interval concept tag is <font face="Courier New">
interval_concept</font></p>
<p>
To register a user defined type as a model of interval concept, specialize the
geometry concept meta-function for that type.&nbsp; In the example below
CInterval is registered as a model of interval&nbsp; concept.<p>
<font face="Courier New">template &lt;&gt;<br>
struct geometry_concept&lt;CInterval&gt; { typedef interval_concept type; };</font><p>
<font face="Times New Roman">The semantic of an interval is that it has a low
and high coordinate and there is an invariant that low is less than or equal to
high.&nbsp; This invariant is enforced by the generic library functions that
operate on intervals, and is not expected of the data type itself or the concept
mapping of that data type to the interval concept through its traits.&nbsp; In
this way a std::pair&lt;int, int&gt;, boost::tuple&lt;int, int&gt; or boost::array&lt;int, 2&gt;
could all be made models of interval by simply providing indirect access to their
elements through traits.</font><p>
<font face="Times New Roman">Below is shown the default interval traits.&nbsp;
Specialization of these traits is required for types that don't conform to the
default behavior.</font><p>
<font face="Courier New">template &lt;typename T&gt;<br>
struct interval_traits {<br>
&nbsp; typedef typename T::coordinate_type coordinate_type;<br>
<br>
&nbsp; static inline coordinate_type get(const T&amp; interval, direction_1d dir) {<br>
&nbsp;&nbsp;&nbsp; return interval.get(dir); <br>
&nbsp; }<br>
};<br>
<br>
template &lt;typename T&gt;<br>
struct interval_mutable_traits {<br>
&nbsp; static inline void set(T&amp; interval, direction_1d dir, </font>
<br>
<font face="Courier New">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; typename interval_traits&lt;T&gt;::coordinate_type value) {<br>
&nbsp;&nbsp;&nbsp;
interval.set(dir, value); <br>
&nbsp;
}<br>
&nbsp;
static inline T construct(typename interval_traits&lt;T&gt;::coordinate_type low_value,
<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
typename interval_traits&lt;T&gt;::coordinate_type high_value) {<br>
&nbsp;&nbsp;&nbsp;
return T(low_value, high_value); <br>
&nbsp;
}<br>
};</font><h2>Functions</h2>
<table border="1" width="100%" id="table1">
<tr>
<td width="586"><font face="Courier New">template &lt;typename T&gt;<br>
coordinate_type <b>get</b>(const T&amp; interval, direction_1d)</font></td>
<td><font face="Times New Roman">Expects a model of interval.&nbsp;
Returns the low or high coordinate of the interval, depending on the
direction_1d value.</font><font face="Courier New"><br>
&nbsp;</font></td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T, typename
coordinate_type&gt;<br>
void <b>set</b>(T&amp; interval, direction_1d, coordinate_type)</font></td>
<td><font face="Times New Roman">Expects a model of interval.&nbsp;&nbsp;
Sets the low or high coordinate of the interval to the coordinate,
depending on the direction_1d value.&nbsp; If low would be greater than
high after this change then both are set to the input coordinate value.</font></td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T&gt;<br>
T <b>construct</b>(coordinate_type low, coordinate_type high)</font></td>
<td>Construct an object that is a model of interval given low and high
coordinate values.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T1, typename
T2&gt;<br>
T1&amp; <b>assign</b>(T1&amp; left, const T2&amp; right)</font></td>
<td>Copies data from right object that models interval into left object
that models interval.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T, typename
T2&gt;<br>
bool <b>equivalence</b>(const T&amp; interval1, const T2&amp; interval2)</font></td>
<td>Given two objects that model interval, compares and returns true if
their low and high values are respectively equal to each other.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T&gt;<br>
bool <b>contains</b>(const T&amp;, coordinate_type, <br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
bool consider_touch=true)</font></td>
<td>Given an object that models interval and a coordinate, returns true
if the interval contains the coordinate.&nbsp; If the consider_touch
flag is true will return true if the coordinate is equal to one of the
interval ends.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T1, typename
T2&gt;<br>
bool <b>contains</b>(const T1&amp; a, const T2&amp; b, <br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
bool consider_touch = true) </font></td>
<td>Returns true if model of interval a contains both ends of model of
interval b.&nbsp; If the consider_touch flag is true will consider the
end of b contained within a even if it is equal to an end of a.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename
interval_type&gt;<br>
coordinate_type <b>low</b>(const interval_type&amp; interval)</font></td>
<td>Returns the low end of an object that models interval.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename
interval_type&gt;<br>
coordinate_type <b>high</b>(const interval_type&amp; interval)</font></td>
<td>Returns the high end of an object that models interval.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">// get the center coordinate<br>
template &lt;typename interval_type&gt;<br>
coordinate_type <b>center</b>(const interval_type&amp; interval)</font></td>
<td>Returns the center coordinate of an object that models interval.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename
interval_type&gt;<br>
void <b>low</b>(interval_type&amp; interval, coordinate_type )</font></td>
<td>Sets the low end of the object that models interval to the
coordinate value.&nbsp; If the low end would be set to larger than high
end then both are set to the coordinate value.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename
interval_type&gt;<br>
void <b>high</b>(interval_type&amp; interval, coordinate_type )</font></td>
<td>Sets the high end of the object that models interval to the
coordinate value.&nbsp; If the high end would be set to less than low
end then both are set to the coordinate value.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename
interval_type&gt;<br>
coordinate_difference <b>delta</b>(const interval_type&amp; interval)</font></td>
<td>Returns the distance from low to high end of an object that models
interval.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename
interval_type&gt;<br>
interval_type&amp; <b>flip</b>(interval_type&amp; interval,<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
coordinate_type axis = 0)</font></td>
<td>Flips an object that models interval about the axis coordinate.&nbsp;
If no axis is provided the interval is flipped across the the origin.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename
interval_type&gt;<br>
interval_type&amp; <b>scale_up</b>(interval_type&amp; interval, <br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
unsigned_area_type factor)</font></td>
<td>Multiplies low and high ends of an object that models interval by
unsigned factor.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename
interval_type&gt;<br>
interval_type&amp; <b>scale_down</b>(interval_type&amp; interval, <br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
unsigned_area_type factor)</font></td>
<td>Divides low and high ends of an object that models interval by
unsigned factor.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename
interval_type&gt;<br>
interval_type&amp; <b>scale</b>(interval_type&amp; interval,<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
double factor) </font></td>
<td>Multiplies low and high ends of an object that models interval by
floating point value.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename
interval_type&gt;<br>
interval_type&amp; <b>move</b>(interval_type&amp; interval,<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
coordinate_difference displacement)</font></td>
<td>Adds displacement value to low and high ends of an object that
models interval.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename
interval_type&gt;<br>
interval_type&amp; <b>convolve</b>(interval_type&amp; interval,<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
coordinate_type b)</font></td>
<td>Adds coordinate value to low and high ends of an object that models
interval.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename
interval_type&gt;<br>
interval_type&amp; <b>deconvolve</b>(interval_type&amp; interval,<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
coordinate_type b)</font></td>
<td>Subtracts coordinate value from low and high ends of an object that
models interval.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T1, typename
T2&gt;<br>
T1&amp; <b>convolve</b>(T1&amp; a, const T2&amp; b)</font></td>
<td>Adds low end of b to low end of a and adds high end of b to high end
of a.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T1, typename
T2&gt;<br>
T1&amp; <b>deconvolve</b>(T1&amp; a, const T2&amp; b)</font></td>
<td>Subtracts low end of b from low end of a and subtracts high end of b
from high end of a. </td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T1, typename
T2&gt;<br>
T1&amp; <b>reflected_convolve</b>(T1&amp; a, const T2&amp; b)</font></td>
<td>Adds high end of b to low end of a and adds low end of b to high end
of a.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T1, typename
T2&gt;<br>
T1&amp; <b>reflected_deconvolve</b>(T1&amp; a, const T2&amp; b)</font></td>
<td>Subtracts high end of b from low end of a and subtracts low end of b
from high end of a.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T&gt;<br>
coordinate_difference <b>euclidean_distance</b>(const T&amp;,<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
coordinate_type)</font></td>
<td>Returns the distance from an object that models interval to a
coordinate.&nbsp; Returns zero if the coordinate is equal to an end of
the interval or contained within the interval.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T1, typename
T2&gt;<br>
bool <b>intersects</b>(const T1&amp; interval, const T2&amp; b, <br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
bool consider_touch = true)</font></td>
<td>Returns true if two objects that model interval overlap.&nbsp; If
the consider_touch flag is true touching at the endpoints is considered
overlap.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T1, typename
T2&gt;<br>
bool <b>boundaries_intersect</b>(const T1&amp; interval, const T2&amp; b, <br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
bool consider_touch = true)</font></td>
<td>Returns true is two objects that model interval partially overlap
such that one end point of each is contained within the other.&nbsp; If
the consider_touch flag is true a coordinate is considered contained
even if it is equal to an end.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T1, typename
T2&gt;<br>
bool <b>abuts</b>(const T1&amp; a, const T2&amp; b,<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; direction_1d dir)
</font></td>
<td>Returns true if interval b abuts but down not overlap interval a on
the end of interval a specified by dir.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T1, typename
T2&gt;<br>
bool <b>abuts</b>(const T1&amp; a, const T2&amp; b)</font></td>
<td>Returns true if interval b abuts but down not overlap interval a.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T1, typename
T2&gt;<br>
bool <b>intersect</b>(T1&amp; a, const T2&amp; b,<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
bool consider_touch = true) </font></td>
<td>Sets interval a to the intersection of interval a and interval b and
return true.&nbsp; If the two intervals do not intersect interval a is
unchanged and the function returns false.&nbsp; If the flag
consider_touch is true intervals that abut are considered to intersect.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T1, typename
T2&gt;<br>
T&amp; <b>generalized_intersect</b>(T1&amp; a, const T2&amp; b)</font></td>
<td>Same as intersect, but if they do not intersect set a to the
interval between a and b.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T&gt;<br>
T&amp; <b>bloat</b>(T&amp; interval, coordinate_type)</font></td>
<td>Adds the coordinate value to high end of interval and subtracts it
from low end of interval.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T&gt;<br>
T&amp; <b>bloat</b>(T&amp; interval, direction_1d, coordinate_type)</font></td>
<td>Adds the coordinate value to high end of interval or subtracts it
from low end of interval depending on the direction_1d.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T&gt;<br>
T&amp; <b>shrink</b>(T&amp; interval, coordinate_type)</font></td>
<td>Subtracts the coordinate value from high end of interval and adds it
to low end of interval.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T&gt;<br>
T&amp; <b>shrink</b>(T&amp; interval, direction_1d, coordinate_type)</font></td>
<td>Subtracts the coordinate value from high end of interval or adds it
to low end of interval depending on the direction_1d.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T1, typename
T2&gt;<br>
bool <b>encompass</b>(T1&amp; a, const T2&amp; b)</font></td>
<td>Sets low of a to min of low of a and low of b and sets high of a to
max of high of a and high of b.&nbsp; Returns true if b was not
contained within a to begin with.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T&gt;<br>
bool <b>encompass</b>(T&amp; a, coordinate_type)</font></td>
<td>Sets low of a to min of low of a and coordinate value and sets high
of a to max of high of a and coordinate value.&nbsp; Returns true if
coordinate value was not contained within a to begin with.</td>
</tr>
</table>
<h1>Interval Data</h1>
<p>
<p>The library provides a model of interval concept declared
<font face="Courier New">
template&lt;typename T&gt; interval_data </font>where T is the coordinate type.</p>
<p>This data type is used internally when an interval is needed and is available
to the library user who finds it convenient to use a library interval data type
instead of providing their own.&nbsp; The data type is implemented to be
convenient to use with the library traits.</p>
<h2>Members</h2>
<table border="1" width="100%" id="table2">
<tr>
<td width="586"><b><font face="Courier New">geometry_type</font></b></td>
<td><font face="Times New Roman">interval_concept</font></td>
</tr>
<tr>
<td width="586"><b><font face="Courier New">coordinate_type</font></b></td>
<td><font face="Times New Roman">T</font></td>
</tr>
<tr>
<td width="586"><font face="Courier New"><b>interval_data</b>()</font></td>
<td><font face="Times New Roman">Default constructs the two coordinate
values of the interval.</font></td>
</tr>
<tr>
<td width="586"><font face="Courier New"><b>interval_data</b>(T low, T
high)</font></td>
<td><font face="Times New Roman">Constructs an interval with two
coordinates.</font></td>
</tr>
<tr>
<td width="586"><font face="Courier New"><b>interval_data</b>(const
interval_data&amp; that)</font></td>
<td><font face="Times New Roman">Copy construct</font></td>
</tr>
<tr>
<td width="586"><font face="Courier New">interval_data&amp; <b>operator=</b>(const
interval_data&amp; that)</font></td>
<td>Assignment operator.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T2&gt;<b>&nbsp;
<br> </b>interval_data&amp; <b>operator=</b>(const T2&amp; that) const</font></td>
<td>Assign from an object that is a model of interval.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T2&gt;<b>
<br> </b>bool<b>
operator==</b>(const T2&amp; that) const</font></td>
<td>Compare equality to an object that is a model of interval.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T2&gt;<b>
<br> </b>bool<b>
operator!=</b>(const T2&amp; that) const</font></td>
<td>Compare inequality to an object that is a model of interval.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T2&gt;<b>
<br> </b>bool<b>
operator&lt;</b>(const T2&amp; that) const</font></td>
<td>Compares low coordinates then high coordinates to break ties.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T2&gt;<b>
<br> </b>bool<b>
operator&lt;=</b>(const T2&amp; that) const</font></td>
<td>Compares low coordinates then high coordinates to break ties.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T2&gt;<b>
<br> </b>bool<b>
operator&gt;</b>(const T2&amp; that) const</font></td>
<td>Compares low coordinates then high coordinates to break ties.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">template &lt;typename T2&gt;<b>
<br> </b>bool<b>
operator&gt;=</b>(const T2&amp; that) const</font></td>
<td>Compares low coordinates then high coordinates to break ties.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">T <b>get</b>(direction_1d dir)
const</font></td>
<td>Get the coordinate in the given direction.</td>
</tr>
<tr>
<td width="586"><font face="Courier New">void <b>set</b>(direction_1d
dir, T value)</font></td>
<td>Sets the coordinate in the given direction to the value.</td>
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<th class="docinfo-name">Copyright:</th>
<td>Copyright © Intel Corporation 2008-2010.</td>
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<th class="docinfo-name">License:</th>
<td class="field-body">Distributed under the Boost Software License,
Version 1.0. (See accompanying file <tt class="literal">
<span class="pre">LICENSE_1_0.txt</span></tt> or copy at
<a class="reference" target="_top" href="http://www.boost.org/LICENSE_1_0.txt">
http://www.boost.org/LICENSE_1_0.txt</a>)</td>
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