vil_image_resource.cxx

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// This is core/vil/vil_image_resource.cxx
//:
// \file
// \author Ian Scott  ISBE Manchester
// \date   20 Sep 2002
//
//-----------------------------------------------------------------------------

#include "vil_image_resource.h"
#include <vil/vil_image_view_base.h>

//--------------------------------------------------------------------------------

//: the reference count starts at 0.
vil_image_resource::vil_image_resource() : reference_count_(0) { }

vil_image_resource::~vil_image_resource() = default;


bool vil_image_resource::get_property(char const *, void *) const
{
  return false;
}


//: Check that a view will fit into the data at the given offset.
// This includes checking that the pixel type is scalar.
bool vil_image_resource::view_fits(const vil_image_view_base& im, unsigned i0, unsigned j0)
{
  return i0 + im.ni() <= ni() &&
         j0 + im.nj() <= nj() &&
         im.nplanes() == nplanes() &&
         vil_pixel_format_num_components(im.pixel_format()) == 1;
}