Mhmm, somehow I screwed up. The following compiles fine now: int main ( int argc , char **argv) { typedef boost::mpl::vector< boost::gil::gray8_image_t, boost::gil::gray16_image_t, boost::gil::gray32_image_t, boost::gil::rgb8_image_t, boost::gil::rgb16_image_t, boost::gil::rgb32_image_t > my_img_types; typedef boost::mpl::vector< boost::gil::gray8_view_t, boost::gil::gray16_view_t, boost::gil::gray32_view_t, boost::gil::rgb8_view_t, boost::gil::rgb16_view_t, boost::gil::rgb32_view_t > my_view_types; boost::gil::any_image<my_img_types> runtime_image; boost::gil::any_image_view<my_view_types> runtime_view; runtime_view = boost::gil::nth_channel_view( const_view(runtime_image) , 0 ); return 0; } But when running I'm getting a bad_cast exception. What would you expect the retrieve from nth_channel_view call? I mean what can of image type is the correct one? Christian On Tue, Jan 27, 2009 at 3:31 PM, Olivier Tournaire <olitour@gmail.com> wrote:
2009/1/27 Christian Henning <chhenning@gmail.com>
Hi Oliver,
Hi Christian,
I don't get it to compile even when you put the nth_channel_view call inside jpeg_write_view for a simple reason. nth_channel_view needs the reference type of your any_image. But that's not possible since no one knows what image type the any_image actually is. You can cast your any_image to a specific image type using gil's variant::_dynamic_cast member. Then you can use nth_channel_view.
Are you sure your code compiles? Let me know if you keep having troubles.
Yes, my code compiles fine with boost 1.36. In attachement, maybe you could try.
Regards, Olivier
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