Yes, you can alter an Fl_RGB_Image. Fl_RGB_Image::copy(w, h) for example copies an image and scales it to the desired size in one go. Fl_RGB_Image::desaturate() changes color values without copying the image. Everything you need is in the source code in src/Fl_Image.cxx .
Matthias On 16.03.2008, at 23:31, Zoltan Phelps wrote: > I searched the forum but didn't find any suitable thread. > In my application i would like to show two images, one "original" > version and one "altered" version (e.g. after LUT conversion). > My question is - how can i access the pixel data of an Fl_RGB_Image > directly? The source code reveals only the "const char * const > *data();" member function but as it is constant i'm not able to > change anything. Is there another suitable way? Or is it better to > just keep an unsigned char array with the pixel data, change it as > desired and redraw it with the fl_draw_image function without > creating any Fl_()_Image object? I'm a bit confused because with > different libraries i used to create an image object and to alter > its pixel data there had always been an access member function. > Thanks in advance! > ZP > _______________________________________________ > fltk mailing list > [email protected] > http://lists.easysw.com/mailman/listinfo/fltk ---- http://robowerk.com/ _______________________________________________ fltk mailing list [email protected] http://lists.easysw.com/mailman/listinfo/fltk
