summaryrefslogtreecommitdiffstats
path: root/plug-ins/lighting/lighting-apply.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--plug-ins/lighting/lighting-apply.c154
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 ();
+ }
+
+}