[Olena-patches] 2855: Add a saving routine for int_u8 2-complex images.

* mln/io/off/save.hh (io::off::save(const int_u8_2complex_image3df&, const std::string&)): New function. (io::off::internal::int_u8_off_saver): New functor. --- milena/ChangeLog | 9 +++++++++ milena/mln/io/off/save.hh | 42 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 51 insertions(+), 0 deletions(-) diff --git a/milena/ChangeLog b/milena/ChangeLog index 0fb9951..1a0b0a0 100644 --- a/milena/ChangeLog +++ b/milena/ChangeLog @@ -1,5 +1,14 @@ 2008-11-12 Roland Levillain &lt;roland(a)lrde.epita.fr&gt; + Add a saving routine for int_u8 2-complex images. + + * mln/io/off/save.hh + (io::off::save(const int_u8_2complex_image3df&, const std::string&)): + New function. + (io::off::internal::int_u8_off_saver): New functor. + +2008-11-12 Roland Levillain &lt;roland(a)lrde.epita.fr&gt; + Introduce a factoring functor to save OFF image files. * mln/io/off/save.hh (mln::io::off::internal::off_saver): New. diff --git a/milena/mln/io/off/save.hh b/milena/mln/io/off/save.hh index a3fde3a..604281e 100644 --- a/milena/mln/io/off/save.hh +++ b/milena/mln/io/off/save.hh @@ -66,6 +66,16 @@ namespace mln void save(const bin_2complex_image3df& ima, const std::string& filename); + /** \brief Save an 8-bit grey-level OFF image into a complex image. + + \param[in] ima The image to save. + \param[in] filename The name of the file where to save the image. + + Only data is attached to 2-faces is saved; the OFF file + cannot store data attached to faces of other dimensions. */ + void save(const int_u8_2complex_image3df& ima, + const std::string& filename); + namespace internal { @@ -96,6 +106,14 @@ namespace mln void write_face_data(std::ostream& ostr, const value& v) const; }; + + struct int_u8_off_saver + : public off_saver< int_u8_2complex_image3df, int_u8_off_saver > + { + /// \brief Save face data. + void write_face_data(std::ostream& ostr, const value& v) const; + }; + } // end of namespace mln::io::off::internal @@ -114,6 +132,14 @@ namespace mln trace::exiting("mln::io::off::save"); } + void + save(const int_u8_2complex_image3df& ima, const std::string& filename) + { + trace::entering("mln::io::off::save"); + internal::int_u8_off_saver()(ima, filename); + trace::exiting("mln::io::off::save"); + } + /*-------------------------. | Actual implementations. | @@ -306,6 +332,22 @@ namespace mln { // Do nothing (no data associated to faces). } + + void + int_u8_off_saver::write_face_data(std::ostream& ostr, + const value& v) const + { + /* Using RGBA colors to represent an 8-bit integer value. + + Each channel (R, G, B) of the color V is an integer in + the range 0..255. A fourth channel, A, controls the + transparency. + + We just set the same value for each channel, as the OFF + file format does not support gray-level values as-is. */ + ostr << ' ' << v << ' ' << v << ' ' << v + << ' ' << 1.0f << std::endl; + } /* \} */ } // end of namespace mln::io::off::internal -- 1.6.0.1