#include <pronto/raster/padded_raster_view.h>

template<class Raster> class padded_raster_view;

The padded_raster_view class implements the RasterView concept. It requires that Raster implements the RasterView concept. The padded_raster_view<Raster> provides a view of a R object augmented with leading and trailing rows and columns of a uniform value. padded_raster_view<Raster> objects are created by the pad function.

The original cells of the raster that is padded remain mutable if they were so. Cells in the leading and trailing rows and columns are not mutable.

The iterator and const_iterator types associated with the padded_raster_view class are conforming to the RasterIterator and RandomAccessible concepts. (in progress)

If Raster is a Subbable, then so is padded_raster_view<Raster>. If Raster is RecursivelySubbable, then so is padded_raster_view<Raster>. padded_raster_view has the default constructors and destructors with reference semantics. Furthermore it has the following constructors:

padded_raster_view(const Raster& raster,
        int leading_rows, int trailing_rows, 
        int leading_cols, int trailing_cols, const value_type& value)

The following member functions implement the RasterView concepts.

int rows() const 
int cols() const 
int size() const 
padded_raster_view::iterator begin() 
padded_raster_view::iterator end() 
padded_raster_view::const_iterator begin() const
padded_raster_view::const_iterator end() const
padded_raster_view::sub_raster_type sub_raster(int first_row
  , int first_col, int num_rows, int num_cols) const

See also the function pad that is used to create a padded_raster_view.