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vigra/iteratortraits.hxx |

    00001 /************************************************************************/
    00002 /*                                                                      */
    00003 /*               Copyright 1998-2002 by Ullrich Koethe                  */
    00004 /*                                                                      */
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    00035
    00036
    00037 #ifndef VIGRA_ITERATORTRAITS_HXX
    00038 #define VIGRA_ITERATORTRAITS_HXX
    00039
    00040 #include "accessor.hxx"
    00041 #include "imageiteratoradapter.hxx"
    00042
    00043 namespace vigra {
    00044
    00045 /** \addtogroup ImageIterators
    00046 */
    00047 //@{
    00048 /** \brief Export associated information for each image iterator.
    00049
    00050     The IteratorTraits class contains the following fields:
    00051
    00052     \code
    00053     template <class T>
    00054     struct IteratorTraits
    00055     {
    00056         typedef T                                     Iterator;
    00057         typedef Iterator                              iterator;
    00058         typedef typename iterator::iterator_category  iterator_category;
    00059         typedef typename iterator::value_type         value_type;
    00060         typedef typename iterator::reference          reference;
    00061         typedef typename iterator::index_reference    index_reference;
    00062         typedef typename iterator::pointer            pointer;
    00063         typedef typename iterator::difference_type    difference_type;
    00064         typedef typename iterator::row_iterator       row_iterator;
    00065         typedef typename iterator::column_iterator    column_iterator;
    00066         typedef typename
    00067          AccessorTraits<value_type>::default_accessor DefaultAccessor;
    00068         typedef DefaultAccessor                       default_accessor;
    00069
    00070         typedef VigraTrueType/VigraFalseType          hasConstantStrides;
    00071     };
    00072     \endcode
    00073
    00074     By (partially) specializing this template for an iterator class
    00075     the defaults given above can be changed as appropriate. For example, iterators
    00076     for rgb images are associated with <TT>RGBAccessor<value_type></TT>
    00077     instead of <TT>StandardAccessor<value_type></TT>. To get the accessor
    00078     associated with a given iterator, use code like this:
    00079
    00080     \code
    00081     template <class Iterator>
    00082     void foo(Iterator i)
    00083     {
    00084         typedef typename IteratorTraits<Iterator>::DefaultAccessor Accessor;
    00085         Accessor a;
    00086         ...
    00087     }
    00088     \endcode
    00089
    00090     This technique is, for example, used by the
    00091     \ref IteratorBasedArgumentObjectFactories. The possibility to retrieve the default accessor by means of a traits
    00092     class is especially important since this information is not
    00093     contained in the iterator directly.
    00094
    00095     The member <tt>hasConstantStrides</tt> is useful for certain
    00096     optimizations: it helps to decide whether we can replace iterator
    00097     operations such as <tt>iter++</tt> or <tt>iter += n</tt> with
    00098     corresponding pointer operations (which may be faster), where
    00099     the pointer is obtained as the address of iterator's pointee
    00100     (the object the iterator currently  refers to).
    00101     This flag would be <tt>VigraFalseType</tt> for a
    00102     <tt>std::list<int>::iterator</tt>, but is <tt>VigraTrueType</tt>
    00103     for most VIGRA iterators.
    00104
    00105     <b>\#include</b> <vigra/iteratortraits.hxx>
    00106     Namespace: vigra
    00107 */
    00108 template <class T>
    00109 struct IteratorTraits
    00110 {
    00111     typedef T                                          Iterator;
    00112     typedef Iterator                                   iterator;
    00113     typedef typename iterator::iterator_category       iterator_category;
    00114     typedef typename iterator::value_type              value_type;
    00115     typedef typename iterator::reference               reference;
    00116     typedef typename iterator::index_reference         index_reference;
    00117     typedef typename iterator::pointer                 pointer;
    00118     typedef typename iterator::difference_type         difference_type;
    00119     typedef typename iterator::row_iterator            row_iterator;
    00120     typedef typename iterator::column_iterator         column_iterator;
    00121     typedef typename
    00122         AccessorTraits<value_type>::default_accessor   DefaultAccessor;
    00123     typedef DefaultAccessor                            default_accessor;
    00124
    00125     // default: disable the constant strides optimization
    00126     typedef VigraFalseType                             hasConstantStrides;
    00127 };
    00128
    00129 template <class T>
    00130 struct IteratorTraitsBase
    00131 {
    00132     typedef T                                     Iterator;
    00133     typedef Iterator                              iterator;
    00134     typedef typename iterator::iterator_category  iterator_category;
    00135     typedef typename iterator::value_type         value_type;
    00136     typedef typename iterator::reference          reference;
    00137     typedef typename iterator::index_reference    index_reference;
    00138     typedef typename iterator::pointer            pointer;
    00139     typedef typename iterator::difference_type    difference_type;
    00140     typedef typename iterator::row_iterator       row_iterator;
    00141     typedef typename iterator::column_iterator    column_iterator;
    00142 };
    00143
    00144
    00145 //@}
    00146
    00147
    00148 /***********************************************************/
    00149
    00150 /** \page ArgumentObjectFactories Argument Object Factories
    00151
    00152     Factory functions to create argument objects which simplify long argument lists.
    00153
    00154     <UL style="list-style-image:url(documents/bullet.gif)">
    00155     <LI> \ref ImageBasedArgumentObjectFactories
    00156     <LI> \ref MultiArrayBasedArgumentObjectFactories
    00157     <LI> \ref IteratorBasedArgumentObjectFactories
    00158     </UL>
    00159
    00160     Long argument lists provide for greater flexibility of functions,
    00161     but they are also tedious and error prone, when we don't need
    00162     the flexibility. Thus, we define argument objects which
    00163     automatically provide reasonable defaults for those arguments that we
    00164     didn't specify explicitly.
    00165
    00166     The argument objects are created via a number of factory functions.
    00167     Since these functions have descriptive names, they also serve
    00168     to improve readability: the name of each factory tells te purpose of its
    00169     argument object.
    00170
    00171     Consider the following example. Without argument objects we had to
    00172     write something like this (cf. \ref copyImageIf()):
    00173
    00174     \code
    00175     vigra::BImage img1, img2, img3;
    00176
    00177     // fill img1 and img2 ...
    00178
    00179     vigra::copyImageIf(img1.upperLeft(), img1.lowerRight(), img1.accessor(),
    00180                 img2.upperLeft(), img2.accessor(),
    00181                 img3.upperLeft(), img3.accessor());
    00182     \endcode
    00183
    00184     Using the argument object factories, this becomes much shorter and
    00185     more readable:
    00186
    00187     \code
    00188     vigra::copyImageIf(srcImageRange(img1),
    00189                 maskImage(img2),
    00190                 destImage(img3));
    00191     \endcode
    00192
    00193     The names of the factories clearly tell which image is source, mask,
    00194     and destination. In addition, the suffix <TT>Range</TT> must be used
    00195     for those argument objects that need to specify the lower right
    00196     corner of the region of interest. Typically, this is only the first
    00197     source argument, but sometimes the first destiniation argument must
    00198     also contain a range.
    00199
    00200     The factory functions come in two flavours: Iterator based and
    00201     image based factories. Above we have seen the image based variant.
    00202     The iterator based variant would look like this:
    00203
    00204     \code
    00205     vigra::copyImageIf(srcIterRange(img1.upperLeft(), img1.lowerRight()),
    00206                 maskIter(img2.upperLeft()),
    00207                 destIter(img3.upperLeft()));
    00208     \endcode
    00209
    00210     These factory functions contain the word <TT>Iter</TT> instead of the word
    00211     <TT>Image</TT>,  They would normally be used if we couldn't access the
    00212     images (for example, within a function which got passed iterators)
    00213     or if we didn't want to operate on the entire image. The default
    00214     accessor is obtained via \ref vigra::IteratorTraits.
    00215
    00216     All factory functions also allow to specify accessors explicitly. This
    00217     is useful if we can't use the default accessor. This variant looks
    00218     like this:
    00219
    00220     \code
    00221     vigra::copyImageIf(srcImageRange(img1),
    00222                 maskImage(img2, MaskPredicateAccessor()),
    00223                 destImage(img3));
    00224     \endcode
    00225
    00226     or
    00227
    00228     \code
    00229     vigra::copyImageIf(srcIterRange(img1.upperLeft(), img1.lowerRight()),
    00230                 maskIter(img2.upperLeft(), MaskPredicateAccessor()),
    00231                 destIter(img3.upperLeft()));
    00232     \endcode
    00233
    00234     All versions can be mixed freely within one expression.
    00235     Technically, the argument objects are simply defined as
    00236     pairs and triples of iterators and accessor so that all algorithms
    00237     should declare a call interface version based on pairs and triples
    00238     (see for example \ref copyImageIf()).
    00239
    00240   \section ImageBasedArgumentObjectFactories Image Based Argument Object Factories
    00241
    00242     <b>Include:</b> automatically included with the image classes<br>
    00243     Namespace: vigra
    00244
    00245     These factories can be used to create argument objects when we
    00246     are given instances or subclasses of \ref vigra::BasicImage (see
    00247     \ref StandardImageTypes for instances defined per default).
    00248     These factory functions access <TT>img.upperLeft()</TT>,
    00249     <TT>img.lowerRight()</TT>, and <TT>img.accessor()</TT> to obtain the iterators
    00250     and accessor for the given image (unless the accessor is
    00251     given explicitly). The following factory functions are provided:
    00252
    00253     <table>
    00254     <tr><th bgcolor="#f0e0c0" colspan=2 align=left>
    00255         <TT>\ref vigra::BasicImage "vigra::BasicImage<SomeType>" img;</TT> or <br>
    00256          <TT>\ref vigra::BasicImageView "vigra::BasicImageView<SomeType>" img;</TT>
    00257         </th>
    00258     </tr>
    00259     <tr><td>
    00260
    00261     <TT>srcImageRange(img)</TT>
    00262     </td><td>
    00263         create argument object containing upper left, lower right, and
    00264         default accessor of source image
    00265
    00266     </td></tr>
    00267     <tr><td>
    00268
    00269     <TT>srcImageRange(img, Rect2D(...))</TT>
    00270     </td><td>
    00271         create argument object containing the ROI specified by <tt>\ref vigra::Rect2D</tt> and
    00272         default accessor of source image
    00273
    00274     </td></tr>
    00275     <tr><td>
    00276
    00277     <TT>srcImageRange(img, SomeAccessor())</TT>
    00278     </td><td>
    00279         create argument object containing upper left, lower right
    00280         of source image, and given accessor
    00281
    00282     </td></tr>
    00283     <tr><td>
    00284
    00285     <TT>srcImageRange(img, Rect2D(...), SomeAccessor())</TT>
    00286     </td><td>
    00287         create argument object containing the ROI specified by <tt>\ref vigra::Rect2D</tt> and
    00288         of source image, and given accessor
    00289
    00290     </td></tr>
    00291     <tr><td>
    00292
    00293     <TT>srcImage(img)</TT>
    00294     </td><td>
    00295         create argument object containing upper left, and
    00296         default accessor of source image
    00297
    00298     </td></tr>
    00299     <tr><td>
    00300
    00301     <TT>srcImage(img, Point2D(...))</TT>
    00302     </td><td>
    00303         create argument object with upper left at point given by <tt>\ref vigra::Point2D</tt>, and
    00304         default accessor of source image
    00305
    00306     </td></tr>
    00307     <tr><td>
    00308
    00309     <TT>srcImage(img, SomeAccessor())</TT>
    00310     </td><td>
    00311         create argument object containing upper left
    00312         of source image, and given accessor
    00313
    00314     </td></tr>
    00315     <tr><td>
    00316
    00317     <TT>srcImage(img, Point2D(...), SomeAccessor())</TT>
    00318     </td><td>
    00319         create argument object with upper left at point given by <tt>\ref vigra::Point2D</tt> of source image,
    00320         and given accessor
    00321
    00322     </td></tr>
    00323     <tr><td>
    00324
    00325     <TT>maskImage(img)</TT>
    00326     </td><td>
    00327         create argument object containing upper left, and
    00328         default accessor of mask image
    00329
    00330     </td></tr>
    00331      <tr><td>
    00332
    00333     <TT>maskImage(img, Point2D(...))</TT>
    00334     </td><td>
    00335         create argument object with upper left at point given by <tt>\ref vigra::Point2D</tt>, and
    00336         default accessor of mask image
    00337
    00338     </td></tr>
    00339    <tr><td>
    00340
    00341     <TT>maskImage(img, SomeAccessor())</TT>
    00342     </td><td>
    00343         create argument object containing upper left
    00344         of mask image, and given accessor
    00345
    00346     </td></tr>
    00347     <tr><td>
    00348
    00349     <TT>maskImage(img, Point2D(...), SomeAccessor())</TT>
    00350     </td><td>
    00351         create argument object with upper left at point given by <tt>\ref vigra::Point2D</tt> of mask image,
    00352         and given accessor
    00353
    00354     </td></tr>
    00355     <tr><td>
    00356
    00357     <TT>destImageRange(img)</TT>
    00358     </td><td>
    00359         create argument object containing upper left, lower right, and
    00360         default accessor of destination image
    00361
    00362     </td></tr>
    00363     <tr><td>
    00364
    00365     <TT>destImageRange(img, Rect2D(...))</TT>
    00366     </td><td>
    00367         create argument object containing the ROI specified by <tt>\ref vigra::Rect2D</tt> and
    00368         default accessor of destination image
    00369
    00370     </td></tr>
    00371     <tr><td>
    00372
    00373     <TT>destImageRange(img, SomeAccessor())</TT>
    00374     </td><td>
    00375         create argument object containing upper left, lower right
    00376         of destination image, and given accessor
    00377
    00378     </td></tr>
    00379     <tr><td>
    00380
    00381     <TT>destImageRange(img, Rect2D(...), SomeAccessor())</TT>
    00382     </td><td>
    00383         create argument object containing the ROI specified by <tt>\ref vigra::Rect2D</tt>
    00384         of destination image, and given accessor
    00385
    00386     </td></tr>
    00387      <tr><td>
    00388
    00389     <TT>destImage(img)</TT>
    00390     </td><td>
    00391         create argument object containing upper left, and
    00392         default accessor of destination image
    00393
    00394     </td></tr>
    00395      <tr><td>
    00396
    00397     <TT>destImage(img, Point2D(...))</TT>
    00398     </td><td>
    00399         create argument object with upper left at point given by <tt>\ref vigra::Point2D</tt>, and
    00400         default accessor of destination image
    00401
    00402     </td></tr>
    00403     <tr><td>
    00404
    00405     <TT>destImage(img, SomeAccessor())</TT>
    00406     </td><td>
    00407         create argument object containing upper left
    00408         of destination image, and given accessor
    00409
    00410     </td></tr>
    00411     <tr><td>
    00412
    00413     <TT>destImage(img, Point2D(...), SomeAccessor())</TT>
    00414     </td><td>
    00415         create argument object with upper left at point given by <tt>\ref vigra::Point2D</tt> of destination image,
    00416         and given accessor
    00417
    00418     </td></tr>
    00419     </table>
    00420
    00421
    00422   \section MultiArrayBasedArgumentObjectFactories MultiArrayView Based Argument Object Factories
    00423
    00424     <b>Include:</b> automatically included with
    00425        <vigra/multi_array.hxx><br>
    00426     Namespace: vigra
    00427
    00428     These factories can be used to create argument objects when we
    00429     are given instances or subclasses of \ref vigra::MultiArrayView.
    00430     These factory functions access <TT>array.traverser_begin()</TT>,
    00431     <TT>array.traverser_end()</TT> to obtain the iterators. If no accessor is
    00432     given, they use the <tt>AccessorTraits<T></tt> to determine the default
    00433     accessor associated with the array's value type <tt>T</tt>.
    00434     The following factory functions are provided:
    00435
    00436     <table>
    00437     <tr><th bgcolor="#f0e0c0" colspan=2 align=left>
    00438         <TT>\ref vigra::MultiArrayView "vigra::MultiArrayView<N, SomeType>" img;</TT>
    00439         </th>
    00440     </tr>
    00441     <tr><td>
    00442
    00443     <TT>srcMultiArrayRange(img)</TT>
    00444     </td><td>
    00445         create argument object containing a \ref vigra::MultiIterator
    00446         marking the begin of the array, a shape object giving the desired
    00447         shape of the array (possibly a subarray) and the default const accessor for
    00448         <tt>SomeType</tt>
    00449
    00450     </td></tr>
    00451     <tr><td>
    00452
    00453     <TT>srcMultiArrayRange(img, SomeAccessor())</TT>
    00454     </td><td>
    00455         create argument object containing a \ref vigra::MultiIterator
    00456         marking the begin of the array, a shape object giving the desired
    00457         shape of the array (possibly a subarray) and the given accessor
    00458
    00459     </td></tr>
    00460     <tr><td>
    00461
    00462     <TT>srcMultiArray(img)</TT>
    00463     </td><td>
    00464         create argument object containing a \ref vigra::MultiIterator
    00465         marking the begin of the array, and the default const accessor for
    00466         <tt>SomeType</tt>
    00467
    00468     </td></tr>
    00469     <tr><td>
    00470
    00471     <TT>srcMultiArray(img, SomeAccessor())</TT>
    00472     </td><td>
    00473         create argument object containing a \ref vigra::MultiIterator
    00474         marking the begin of the array and the given accessor
    00475
    00476     </td></tr>
    00477     <tr><td>
    00478
    00479     <TT>destMultiArrayRange(img)</TT>
    00480     </td><td>
    00481         create argument object containing a \ref vigra::MultiIterator
    00482         marking the begin of the array, a shape object giving the desired
    00483         shape of the array (possibly a subarray) and the default accessor for
    00484         <tt>SomeType</tt>
    00485
    00486     </td></tr>
    00487     <tr><td>
    00488
    00489     <TT>destMultiArrayRange(img, SomeAccessor())</TT>
    00490     </td><td>
    00491         create argument object containing a \ref vigra::MultiIterator's
    00492         marking the begin of the array, a shape object giving the desired
    00493         shape of the array (possibly a subarray) and the given accessor
    00494
    00495     </td></tr>
    00496     <tr><td>
    00497
    00498     <TT>destMultiArray(img)</TT>
    00499     </td><td>
    00500         create argument object containing a \ref vigra::MultiIterator
    00501         marking the begin of the array and the default accessor for
    00502         <tt>SomeType</tt>
    00503
    00504     </td></tr>
    00505     <tr><td>
    00506
    00507     <TT>destMultiArray(img, SomeAccessor())</TT>
    00508     </td><td>
    00509         create argument object containing a \ref vigra::MultiIterator's
    00510         marking the begin of the array and the given accessor
    00511
    00512     </td></tr>
    00513     </table>
    00514
    00515
    00516   \section IteratorBasedArgumentObjectFactories Iterator Based Argument Object Factories
    00517
    00518     <b>\#include</b> <vigra/iteratortraits.hxx>
    00519     Namespace: vigra
    00520
    00521     These factories can be used to create argument objects when we
    00522     are given \ref ImageIterators.
    00523     These factory functions use \ref vigra::IteratorTraits to
    00524     get the default accessor for the given iterator unless the
    00525     accessor is given explicitly. The following factory functions
    00526     are provided:
    00527
    00528     <table>
    00529     <tr><th bgcolor="#f0e0c0" colspan=2 align=left>
    00530         <TT>\ref vigra::BasicImage::Iterator "vigra::BasicImage<SomeType>::Iterator" i1, i2;</TT>
    00531         </th>
    00532     </tr>
    00533     <tr><td>
    00534
    00535     <TT>srcIterRange(i1, i2)</TT>
    00536     </td><td>
    00537         create argument object containing the given iterators and
    00538         corresponding default accessor (for source image)
    00539
    00540     </td></tr>
    00541     <tr><td>
    00542
    00543     <TT>srcIterRange(i1, i2, SomeAccessor())</TT>
    00544     </td><td>
    00545         create argument object containing given iterators and
    00546         accessor (for source image)
    00547
    00548     </td></tr>
    00549     <tr><td>
    00550
    00551     <TT>srcIter(i1)</TT>
    00552     </td><td>
    00553         create argument object containing the given iterator and
    00554         corresponding default accessor (for source image)
    00555
    00556     </td></tr>
    00557     <tr><td>
    00558
    00559     <TT>srcIter(i1, SomeAccessor())</TT>
    00560     </td><td>
    00561         create argument object containing given iterator and
    00562         accessor (for source image)
    00563
    00564     </td></tr>
    00565     <tr><td>
    00566
    00567     <TT>maskIter(i1)</TT>
    00568     </td><td>
    00569         create argument object containing the given iterator and
    00570         corresponding default accessor (for mask image)
    00571
    00572     </td></tr>
    00573     <tr><td>
    00574
    00575     <TT>maskIter(i1, SomeAccessor())</TT>
    00576     </td><td>
    00577         create argument object containing given iterator and
    00578         accessor (for mask image)
    00579
    00580     </td></tr>
    00581     <tr><td>
    00582
    00583     <TT>destIterRange(i1, i2)</TT>
    00584     </td><td>
    00585         create argument object containing the given iterators and
    00586         corresponding default accessor (for destination image)
    00587
    00588     </td></tr>
    00589     <tr><td>
    00590
    00591     <TT>destIterRange(i1, i2, SomeAccessor())</TT>
    00592     </td><td>
    00593         create argument object containing given iterators and
    00594         accessor (for destination image)
    00595
    00596     </td></tr>
    00597     <tr><td>
    00598
    00599     <TT>destIter(i1)</TT>
    00600     </td><td>
    00601         create argument object containing the given iterator and
    00602         corresponding default accessor (for destination image)
    00603
    00604     </td></tr>
    00605     <tr><td>
    00606
    00607     <TT>destIter(i1, SomeAccessor())</TT>
    00608     </td><td>
    00609         create argument object containing given iterator and
    00610         accessor (for destination image)
    00611
    00612     </td></tr>
    00613     </table>
    00614 */
    00615
    00616 template <class Iterator, class Accessor>
    00617 inline triple<Iterator, Iterator, Accessor>
    00618 srcIterRange(Iterator const & upperleft, Iterator const & lowerright, Accessor a)
    00619 {
    00620     return triple<Iterator, Iterator, Accessor>(upperleft, lowerright, a);
    00621 }
    00622
    00623 template <class Iterator, class Accessor>
    00624 inline pair<Iterator, Accessor>
    00625 srcIter(Iterator const & upperleft, Accessor a)
    00626 {
    00627     return pair<Iterator, Accessor>(upperleft, a);
    00628 }
    00629
    00630 template <class Iterator, class Accessor>
    00631 inline pair<Iterator, Accessor>
    00632 maskIter(Iterator const & upperleft, Accessor a)
    00633 {
    00634     return pair<Iterator, Accessor>(upperleft, a);
    00635 }
    00636
    00637 template <class Iterator, class Accessor>
    00638 inline pair<Iterator, Accessor>
    00639 destIter(Iterator const & upperleft, Accessor a)
    00640 {
    00641     return pair<Iterator, Accessor>(upperleft, a);
    00642 }
    00643
    00644
    00645 template <class Iterator, class Accessor>
    00646 inline triple<Iterator, Iterator, Accessor>
    00647 destIterRange(Iterator const & upperleft, Iterator const & lowerright, Accessor a)
    00648 {
    00649     return triple<Iterator, Iterator, Accessor>(upperleft, lowerright, a);
    00650 }
    00651
    00652 template <class Iterator>
    00653 inline pair<Iterator, typename IteratorTraits<Iterator>::DefaultAccessor>
    00654 srcIter(Iterator const & upperleft)
    00655 {
    00656     return pair<Iterator, typename IteratorTraits<Iterator>::DefaultAccessor>(
    00657                   upperleft,
    00658                   typename IteratorTraits<Iterator>::DefaultAccessor());
    00659 }
    00660
    00661 template <class Iterator>
    00662 inline triple<Iterator, Iterator, typename IteratorTraits<Iterator>::DefaultAccessor>
    00663 srcIterRange(Iterator const & upperleft, Iterator const & lowerright)
    00664 {
    00665     return triple<Iterator, Iterator,
    00666                   typename IteratorTraits<Iterator>::DefaultAccessor>(
    00667                   upperleft, lowerright,
    00668                   typename IteratorTraits<Iterator>::DefaultAccessor());
    00669 }
    00670
    00671 template <class Iterator>
    00672 inline pair<Iterator, typename IteratorTraits<Iterator>::DefaultAccessor>
    00673 maskIter(Iterator const & upperleft)
    00674 {
    00675     return pair<Iterator, typename IteratorTraits<Iterator>::DefaultAccessor>(
    00676                   upperleft,
    00677                   typename IteratorTraits<Iterator>::DefaultAccessor());
    00678 }
    00679
    00680 template <class Iterator>
    00681 inline pair<Iterator, typename IteratorTraits<Iterator>::DefaultAccessor>
    00682 destIter(Iterator const & upperleft)
    00683 {
    00684     return pair<Iterator, typename IteratorTraits<Iterator>::DefaultAccessor>(
    00685                   upperleft,
    00686                   typename IteratorTraits<Iterator>::DefaultAccessor());
    00687 }
    00688
    00689 template <class Iterator>
    00690 inline triple<Iterator, Iterator, typename IteratorTraits<Iterator>::DefaultAccessor>
    00691 destIterRange(Iterator const & upperleft, Iterator const & lowerright)
    00692 {
    00693     return triple<Iterator, Iterator,
    00694                   typename IteratorTraits<Iterator>::DefaultAccessor>(
    00695                   upperleft, lowerright,
    00696                   typename IteratorTraits<Iterator>::DefaultAccessor());
    00697 }
    00698
    00699 } // namespace vigra
    00700
    00701 #endif // VIGRA_ITERATORTRAITS_HXX

© Ullrich Köthe (ullrich.koethe@iwr.uni-heidelberg.de) Heidelberg Collaboratory for Image Processing, University of Heidelberg, Germany | html generated using doxygen and Python vigra 1.9.0 (Tue Nov 6 2012)