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- <div class="navpath"><a class="el" href="namespaceboost.html">boost</a>::<b>gil</b>::<a class="el" href="g_i_l_0044.html">memory_based_2d_locator</a>
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- <h1>memory_based_2d_locator Class Template Reference<br>
- <small>
- [<a class="el" href="g_i_l_0205.html">Models</a>, <a class="el" href="g_i_l_0182.html">Models</a>]</small>
- </h1><!-- doxytag: class="boost::gil::memory_based_2d_locator" --><!-- doxytag: inherits="boost::gil::pixel_2d_locator_base" --><code>#include <<a class="el" href="g_i_l_0236.html">locator.hpp</a>></code>
- <p>
- <div class="dynheader">
- Inheritance diagram for memory_based_2d_locator:</div>
- <div class="dynsection">
- <p><center><img src="g_i_l_0006.png" usemap="#memory_based_2d_locator_map" border="0" alt=""></center>
- <map name="memory_based_2d_locator_map">
- <area href="g_i_l_0058.html" alt="pixel_2d_locator_base" shape="rect" coords="0,0,809,24">
- </map>
- </div>
- <p>
- <a href="g_i_l_0043.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>
- <h3>template<typename StepIterator><br>
- class boost::gil::memory_based_2d_locator< StepIterator ></h3>
- Memory-based <a class="el" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a> locator. Models: <a class="el" href="g_i_l_0354.html" title="GIL's 2-dimensional locator over immutable GIL pixels.">PixelLocatorConcept</a>,<a class="el" href="g_i_l_0290.html" title="Concept for iterators, locators and views that can define a type just like the given...">HasDynamicXStepTypeConcept</a>,<a class="el" href="g_i_l_0292.html" title="Concept for locators and views that can define a type just like the given locator...">HasDynamicYStepTypeConcept</a>,<a class="el" href="g_i_l_0294.html" title="Concept for locators and views that can define a type just like the given locator...">HasTransposedTypeConcept</a><p>
- The class takes a step iterator as a parameter. The step iterator provides navigation along the vertical axis while its base iterator provides horizontal navigation.
- <p>
- Each instantiation is optimal in terms of <a class="el" href="g_i_l_0621.html" title="Returns an MPL integral type specifying the number of elements in a color base.">size</a> and efficiency. For example, xy locator over interleaved rgb <a class="el" href="g_i_l_0038.html" title="container interface over image view. Models ImageConcept, PixelBasedConcept">image</a> results in a step iterator consisting of one std::ptrdiff_t for the row <a class="el" href="g_i_l_0621.html" title="Returns an MPL integral type specifying the number of elements in a color base.">size</a> and one native pointer (8 bytes total). ++locator.x() resolves to pointer increment. At the other extreme, a 2D navigation of the even pixels of a planar CMYK <a class="el" href="g_i_l_0038.html" title="container interface over image view. Models ImageConcept, PixelBasedConcept">image</a> results in a step iterator consisting of one std::ptrdiff_t for the doubled row <a class="el" href="g_i_l_0621.html" title="Returns an MPL integral type specifying the number of elements in a color base.">size</a>, and one step iterator consisting of one std::ptrdiff_t for the horizontal step of two and a CMYK <a class="el" href="g_i_l_0609.html" title="An iterator over planar pixels. Models HomogeneousColorBaseConcept, PixelIteratorConcept...">planar_pixel_iterator</a> consisting of 4 pointers (24 bytes). In this case ++locator.x() results in four native pointer additions.<p>
- Note also that <code><a class="el" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator</a></code> does not require that its element type be a <a class="el" href="g_i_l_0599.html" title="Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept...">pixel</a>. It could be instantiated with an iterator whose <code>value_type</code> models only <code><a class="el" href="g_i_l_0376.html">Regular</a></code>. In this case the locator models the weaker <a class="el" href="g_i_l_0368.html" title="2-dimensional locator over immutable values">RandomAccess2DLocatorConcept</a>, and does not model <a class="el" href="g_i_l_0344.html" title="Concept for all pixel-based GIL constructs, such as pixels, iterators, locators,...">PixelBasedConcept</a>. Many generic algorithms don't require the elements to be pixels. <table border="0" cellpadding="0" cellspacing="0">
- <tr><td></td></tr>
- <tr><td colspan="2"><br><h2>Public Types</h2></td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="47aa9e48e6f047e54132dec2103df245"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::parent_t" ref="47aa9e48e6f047e54132dec2103df245" args="" -->
- typedef <a class="el" href="g_i_l_0058.html">pixel_2d_locator_base</a><br>
- < <a class="el" href="g_i_l_0044.html">memory_based_2d_locator</a><br>
- < StepIterator >, typename <br>
- iterator_adaptor_get_base<br>
- < StepIterator >::type, <br>
- StepIterator > </td><td class="memItemRight" valign="bottom"><b>parent_t</b></td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="c15ef66252ab1c8710a03d0b9984597f"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::const_t" ref="c15ef66252ab1c8710a03d0b9984597f" args="" -->
- typedef <br>
- <a class="el" href="g_i_l_0044.html">memory_based_2d_locator</a><br>
- < typename const_iterator_type<br>
- < StepIterator >::type > </td><td class="memItemRight" valign="bottom"><b>const_t</b></td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="047d24411ab40043dbf6847f6338a041"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::coord_t" ref="047d24411ab40043dbf6847f6338a041" args="" -->
- typedef parent_t::coord_t </td><td class="memItemRight" valign="bottom"><b>coord_t</b></td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="533eb4300ed17bd6736e87ae328fdff5"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::x_coord_t" ref="533eb4300ed17bd6736e87ae328fdff5" args="" -->
- typedef parent_t::x_coord_t </td><td class="memItemRight" valign="bottom"><b>x_coord_t</b></td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="95060f394e5c23f9f15282c3fd6fe588"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::y_coord_t" ref="95060f394e5c23f9f15282c3fd6fe588" args="" -->
- typedef parent_t::y_coord_t </td><td class="memItemRight" valign="bottom"><b>y_coord_t</b></td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="397e495b7f82699fdd7f80b6b52fee34"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::x_iterator" ref="397e495b7f82699fdd7f80b6b52fee34" args="" -->
- typedef parent_t::x_iterator </td><td class="memItemRight" valign="bottom"><b>x_iterator</b></td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="df65c5fdc3dc0b541734105fa4b5502a"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::y_iterator" ref="df65c5fdc3dc0b541734105fa4b5502a" args="" -->
- typedef parent_t::y_iterator </td><td class="memItemRight" valign="bottom"><b>y_iterator</b></td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="af1864eda36a1748894be741b3d64bde"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::difference_type" ref="af1864eda36a1748894be741b3d64bde" args="" -->
- typedef <a class="el" href="g_i_l_0060.html">parent_t::difference_type</a> </td><td class="memItemRight" valign="bottom"><b>difference_type</b></td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="6c80bdd4dcae459dd371e3d941b83468"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::reference" ref="6c80bdd4dcae459dd371e3d941b83468" args="" -->
- typedef parent_t::reference </td><td class="memItemRight" valign="bottom"><b>reference</b></td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="00e8331245dff7217587de21bf03bbb1"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::cached_location_t" ref="00e8331245dff7217587de21bf03bbb1" args="" -->
- typedef std::ptrdiff_t </td><td class="memItemRight" valign="bottom"><b>cached_location_t</b></td></tr>
- <tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="c2c9b2764bf9fd23c1992234c112d960"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::memory_based_2d_locator" ref="c2c9b2764bf9fd23c1992234c112d960" args="(const StepIterator &yit)" -->
- </td><td class="memItemRight" valign="bottom"><b>memory_based_2d_locator</b> (const StepIterator &yit)</td></tr>
- <tr><td class="memTemplParams" nowrap colspan="2"><a class="anchor" name="3d3666949c8201bd27cf1610ce79c281"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::memory_based_2d_locator" ref="3d3666949c8201bd27cf1610ce79c281" args="(const memory_based_2d_locator< SI > &loc, coord_t y_step)" -->
- template<typename SI> </td></tr>
- <tr><td class="memTemplItemLeft" nowrap align="right" valign="top"> </td><td class="memTemplItemRight" valign="bottom"><b>memory_based_2d_locator</b> (const <a class="el" href="g_i_l_0044.html">memory_based_2d_locator</a>< SI > &loc, coord_t y_step)</td></tr>
- <tr><td class="memTemplParams" nowrap colspan="2"><a class="anchor" name="28f0636e2022cfb9dac598843ad318d5"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::memory_based_2d_locator" ref="28f0636e2022cfb9dac598843ad318d5" args="(const memory_based_2d_locator< SI > &loc, coord_t x_step, coord_t y_step, bool transpose=false)" -->
- template<typename SI> </td></tr>
- <tr><td class="memTemplItemLeft" nowrap align="right" valign="top"> </td><td class="memTemplItemRight" valign="bottom"><b>memory_based_2d_locator</b> (const <a class="el" href="g_i_l_0044.html">memory_based_2d_locator</a>< SI > &loc, coord_t x_step, coord_t y_step, bool transpose=false)</td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="2a59b376d31ac977d9c6eeb355233112"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::memory_based_2d_locator" ref="2a59b376d31ac977d9c6eeb355233112" args="(x_iterator xit, std::ptrdiff_t row_bytes)" -->
- </td><td class="memItemRight" valign="bottom"><b>memory_based_2d_locator</b> (x_iterator xit, std::ptrdiff_t row_bytes)</td></tr>
- <tr><td class="memTemplParams" nowrap colspan="2"><a class="anchor" name="2fdbd887c618d6ef735a27ff58cba525"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::memory_based_2d_locator" ref="2fdbd887c618d6ef735a27ff58cba525" args="(const memory_based_2d_locator< X > &pl)" -->
- template<typename X> </td></tr>
- <tr><td class="memTemplItemLeft" nowrap align="right" valign="top"> </td><td class="memTemplItemRight" valign="bottom"><b>memory_based_2d_locator</b> (const <a class="el" href="g_i_l_0044.html">memory_based_2d_locator</a>< X > &pl)</td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="583cb0c7f3715920e0295e8fd4e9ad7c"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::memory_based_2d_locator" ref="583cb0c7f3715920e0295e8fd4e9ad7c" args="(const memory_based_2d_locator &pl)" -->
- </td><td class="memItemRight" valign="bottom"><b>memory_based_2d_locator</b> (const <a class="el" href="g_i_l_0044.html">memory_based_2d_locator</a> &pl)</td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="c8405fcf56e5ae86b1d96a36d77db6b0"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::operator==" ref="c8405fcf56e5ae86b1d96a36d77db6b0" args="(const this_t &p) const " -->
- bool </td><td class="memItemRight" valign="bottom"><b>operator==</b> (const <a class="el" href="g_i_l_0044.html">this_t</a> &p) const </td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="1e86d37c383d7cbafbd4969321d07ae7"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::x" ref="1e86d37c383d7cbafbd4969321d07ae7" args="() const " -->
- x_iterator const & </td><td class="memItemRight" valign="bottom"><b>x</b> () const </td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="8d8247ad88b73c9bb3b5d7122064ec59"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::y" ref="8d8247ad88b73c9bb3b5d7122064ec59" args="() const " -->
- y_iterator const & </td><td class="memItemRight" valign="bottom"><b>y</b> () const </td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="72169bdc650ac7eda288398e4ce1d7f8"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::x" ref="72169bdc650ac7eda288398e4ce1d7f8" args="()" -->
- x_iterator & </td><td class="memItemRight" valign="bottom"><b>x</b> ()</td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="c7ca2bdfc5a0be2b150b22dddfd9b10f"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::y" ref="c7ca2bdfc5a0be2b150b22dddfd9b10f" args="()" -->
- y_iterator & </td><td class="memItemRight" valign="bottom"><b>y</b> ()</td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a9c85632f9e9074e06d3e5f4e0c46f82"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::x_at" ref="a9c85632f9e9074e06d3e5f4e0c46f82" args="(x_coord_t dx, y_coord_t dy) const " -->
- x_iterator </td><td class="memItemRight" valign="bottom"><b>x_at</b> (x_coord_t dx, y_coord_t dy) const </td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="e38d5bc61a3101e3bb7bd6ab0ff86e0d"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::x_at" ref="e38d5bc61a3101e3bb7bd6ab0ff86e0d" args="(const difference_type &d) const " -->
- x_iterator </td><td class="memItemRight" valign="bottom"><b>x_at</b> (const <a class="el" href="g_i_l_0060.html">difference_type</a> &d) const </td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="0976d4cbadc3e2d690964908fa3a956a"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::xy_at" ref="0976d4cbadc3e2d690964908fa3a956a" args="(x_coord_t dx, y_coord_t dy) const " -->
- <a class="el" href="g_i_l_0044.html">this_t</a> </td><td class="memItemRight" valign="bottom"><b>xy_at</b> (x_coord_t dx, y_coord_t dy) const </td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="f29137a3cb6a953b14bbf61dea45e19f"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::xy_at" ref="f29137a3cb6a953b14bbf61dea45e19f" args="(const difference_type &d) const " -->
- <a class="el" href="g_i_l_0044.html">this_t</a> </td><td class="memItemRight" valign="bottom"><b>xy_at</b> (const <a class="el" href="g_i_l_0060.html">difference_type</a> &d) const </td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="c2e37864c7119a0bfbf5343c4b91db73"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::operator()" ref="c2e37864c7119a0bfbf5343c4b91db73" args="(x_coord_t dx, y_coord_t dy) const " -->
- reference </td><td class="memItemRight" valign="bottom"><b>operator()</b> (x_coord_t dx, y_coord_t dy) const </td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="4353d357fd57b04981e3a631b0b79a84"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::operator[]" ref="4353d357fd57b04981e3a631b0b79a84" args="(const difference_type &d) const " -->
- reference </td><td class="memItemRight" valign="bottom"><b>operator[]</b> (const <a class="el" href="g_i_l_0060.html">difference_type</a> &d) const </td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="4aec2ad9cc0351fd9aab6c1abe0d126f"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::operator+=" ref="4aec2ad9cc0351fd9aab6c1abe0d126f" args="(const difference_type &d)" -->
- <a class="el" href="g_i_l_0044.html">this_t</a> & </td><td class="memItemRight" valign="bottom"><b>operator+=</b> (const <a class="el" href="g_i_l_0060.html">difference_type</a> &d)</td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="bd08a61d0bf0e45c4b4a7dd0fe4c7f39"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::operator-=" ref="bd08a61d0bf0e45c4b4a7dd0fe4c7f39" args="(const difference_type &d)" -->
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- <a class="el" href="g_i_l_0060.html">cached_location_t</a> </td><td class="memItemRight" valign="bottom"><b>cache_location</b> (const <a class="el" href="g_i_l_0060.html">difference_type</a> &d) const </td></tr>
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- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="dbf0329d47a67d83de0129dac95f7d79"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::operator[]" ref="dbf0329d47a67d83de0129dac95f7d79" args="(const cached_location_t &loc) const " -->
- reference </td><td class="memItemRight" valign="bottom"><b>operator[]</b> (const <a class="el" href="g_i_l_0060.html">cached_location_t</a> &loc) const </td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="663951f31f647e1b19e58b7f3443c697"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::row_size" ref="663951f31f647e1b19e58b7f3443c697" args="() const " -->
- std::ptrdiff_t </td><td class="memItemRight" valign="bottom"><b>row_size</b> () const </td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a3d224e4e4ff07d5b09c0d340c822e85"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::pixel_size" ref="a3d224e4e4ff07d5b09c0d340c822e85" args="() const " -->
- std::ptrdiff_t </td><td class="memItemRight" valign="bottom"><b>pixel_size</b> () const </td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="03ebdb7b073911178d936eb706ea053f"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::is_1d_traversable" ref="03ebdb7b073911178d936eb706ea053f" args="(x_coord_t width) const " -->
- bool </td><td class="memItemRight" valign="bottom"><b>is_1d_traversable</b> (x_coord_t width) const </td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="2e50ecf778281aaf591bcf04e74d7428"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::y_distance_to" ref="2e50ecf778281aaf591bcf04e74d7428" args="(const this_t &p2, x_coord_t xDiff) const " -->
- std::ptrdiff_t </td><td class="memItemRight" valign="bottom"><b>y_distance_to</b> (const <a class="el" href="g_i_l_0044.html">this_t</a> &p2, x_coord_t xDiff) const </td></tr>
- <tr><td colspan="2"><br><h2>Friends</h2></td></tr>
- <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="b6b097656008fd7f1d4d3d034a218ca1"></a><!-- doxytag: member="boost::gil::memory_based_2d_locator::memory_based_2d_locator" ref="b6b097656008fd7f1d4d3d034a218ca1" args="" -->
- class </td><td class="memItemRight" valign="bottom"><b>memory_based_2d_locator</b></td></tr>
- </table>
- <hr>The documentation for this class was generated from the following file:<ul>
- <li><a class="el" href="g_i_l_0236.html">locator.hpp</a></ul>
- </div>
- <hr size="1"><address style="text-align: right;"><small>Generated on Sat May 2 13:50:18 2009 for Generic Image Library by
- <a href="http://www.doxygen.org/index.html">
- <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
- </body>
- </html>