diff options
Diffstat (limited to 'plug-ins/lighting/lighting-apply.c')
| -rw-r--r-- | plug-ins/lighting/lighting-apply.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/plug-ins/lighting/lighting-apply.c b/plug-ins/lighting/lighting-apply.c new file mode 100644 index 0000000..500ed24 --- /dev/null +++ b/plug-ins/lighting/lighting-apply.c @@ -0,0 +1,154 @@ +/******************************************************/ +/* Apply mapping and shading on the whole input image */ +/******************************************************/ + +#include "config.h" + +#include <sys/types.h> + +#include <libgimp/gimp.h> + +#include "lighting-main.h" +#include "lighting-image.h" +#include "lighting-shade.h" +#include "lighting-apply.h" + +#include "libgimp/stdplugins-intl.h" + + +/*************/ +/* Main loop */ +/*************/ + +void +compute_image (void) +{ + gint xcount, ycount; + GimpRGB color; + glong progress_counter = 0; + GimpVector3 p; + gint32 new_image_id = -1; + gint32 new_layer_id = -1; + gint32 index; + guchar *row = NULL; + guchar obpp; + gboolean has_alpha; + get_ray_func ray_func; + + if (mapvals.create_new_image == TRUE || + (mapvals.transparent_background == TRUE && + ! gimp_drawable_has_alpha (input_drawable_id))) + { + /* Create a new image */ + /* ================== */ + + new_image_id = gimp_image_new (width, height, GIMP_RGB); + + if (mapvals.transparent_background == TRUE) + { + /* Add a layer with an alpha channel */ + /* ================================= */ + + new_layer_id = gimp_layer_new (new_image_id, "Background", + width, height, + GIMP_RGBA_IMAGE, + 100.0, + gimp_image_get_default_new_layer_mode (new_image_id)); + } + else + { + /* Create a "normal" layer */ + /* ======================= */ + + new_layer_id = gimp_layer_new (new_image_id, "Background", + width, height, + GIMP_RGB_IMAGE, + 100.0, + gimp_image_get_default_new_layer_mode (new_image_id)); + } + + gimp_image_insert_layer (new_image_id, new_layer_id, -1, 0); + output_drawable_id = new_layer_id; + } + + if (mapvals.bump_mapped == TRUE && mapvals.bumpmap_id != -1) + { + bumpmap_setup (mapvals.bumpmap_id); + } + + precompute_init (width, height); + + if (! mapvals.env_mapped || mapvals.envmap_id == -1) + { + ray_func = get_ray_color; + } + else + { + envmap_setup (mapvals.envmap_id); + + ray_func = get_ray_color_ref; + } + + dest_buffer = gimp_drawable_get_shadow_buffer (output_drawable_id); + + has_alpha = gimp_drawable_has_alpha (output_drawable_id); + + /* FIXME */ + obpp = has_alpha ? 4 : 3; //gimp_drawable_bpp (output_drawable_id); + + row = g_new (guchar, obpp * width); + + gimp_progress_init (_("Lighting Effects")); + + /* Init the first row */ + if (mapvals.bump_mapped == TRUE && mapvals.bumpmap_id != -1 && height >= 2) + interpol_row (0, width, 0); + + for (ycount = 0; ycount < height; ycount++) + { + if (mapvals.bump_mapped == TRUE && mapvals.bumpmap_id != -1) + precompute_normals (0, width, ycount); + + index = 0; + + for (xcount = 0; xcount < width; xcount++) + { + p = int_to_pos (xcount, ycount); + color = (* ray_func) (&p); + + row[index++] = (guchar) (color.r * 255.0); + row[index++] = (guchar) (color.g * 255.0); + row[index++] = (guchar) (color.b * 255.0); + + if (has_alpha) + row[index++] = (guchar) (color.a * 255.0); + + progress_counter++; + } + + gimp_progress_update ((gdouble) progress_counter / + (gdouble) maxcounter); + + gegl_buffer_set (dest_buffer, GEGL_RECTANGLE (0, ycount, width, 1), 0, + has_alpha ? + babl_format ("R'G'B'A u8") : babl_format ("R'G'B' u8"), + row, + GEGL_AUTO_ROWSTRIDE); + } + + gimp_progress_update (1.0); + + g_free (row); + + g_object_unref (dest_buffer); + + gimp_drawable_merge_shadow (output_drawable_id, TRUE); + gimp_drawable_update (output_drawable_id, 0, 0, width, height); + + if (new_image_id!=-1) + { + gimp_display_new (new_image_id); + gimp_displays_flush (); + } + +} |