154 lines
4.0 KiB
C
154 lines
4.0 KiB
C
/******************************************************/
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/* Apply mapping and shading on the whole input image */
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/******************************************************/
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#include "config.h"
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#include <sys/types.h>
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#include <libpika/pika.h>
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#include "lighting-main.h"
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#include "lighting-image.h"
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#include "lighting-shade.h"
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#include "lighting-apply.h"
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#include "libpika/stdplugins-intl.h"
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/*************/
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/* Main loop */
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/*************/
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void
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compute_image (void)
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{
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gint xcount, ycount;
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PikaRGB color;
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glong progress_counter = 0;
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PikaVector3 p;
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PikaImage *new_image = NULL;
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PikaLayer *new_layer = NULL;
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gint32 index;
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guchar *row = NULL;
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guchar obpp;
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gboolean has_alpha;
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get_ray_func ray_func;
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if (mapvals.create_new_image == TRUE ||
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(mapvals.transparent_background == TRUE &&
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! pika_drawable_has_alpha (input_drawable)))
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{
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/* Create a new image */
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/* ================== */
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new_image = pika_image_new (width, height, PIKA_RGB);
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if (mapvals.transparent_background == TRUE)
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{
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/* Add a layer with an alpha channel */
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/* ================================= */
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new_layer = pika_layer_new (new_image, "Background",
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width, height,
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PIKA_RGBA_IMAGE,
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100.0,
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pika_image_get_default_new_layer_mode (new_image));
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}
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else
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{
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/* Create a "normal" layer */
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/* ======================= */
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new_layer = pika_layer_new (new_image, "Background",
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width, height,
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PIKA_RGB_IMAGE,
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100.0,
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pika_image_get_default_new_layer_mode (new_image));
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}
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pika_image_insert_layer (new_image, new_layer, NULL, 0);
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output_drawable = PIKA_DRAWABLE (new_layer);
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}
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if (mapvals.bump_mapped == TRUE && mapvals.bumpmap_id != -1)
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{
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bumpmap_setup (pika_drawable_get_by_id (mapvals.bumpmap_id));
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}
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precompute_init (width, height);
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if (! mapvals.env_mapped || mapvals.envmap_id == -1)
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{
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ray_func = get_ray_color;
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}
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else
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{
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envmap_setup (pika_drawable_get_by_id (mapvals.envmap_id));
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ray_func = get_ray_color_ref;
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}
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dest_buffer = pika_drawable_get_shadow_buffer (output_drawable);
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has_alpha = pika_drawable_has_alpha (output_drawable);
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/* FIXME */
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obpp = has_alpha ? 4 : 3; //pika_drawable_get_bpp (output_drawable);
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row = g_new (guchar, obpp * width);
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pika_progress_init (_("Lighting Effects"));
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/* Init the first row */
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if (mapvals.bump_mapped == TRUE && mapvals.bumpmap_id != -1 && height >= 2)
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interpol_row (0, width, 0);
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for (ycount = 0; ycount < height; ycount++)
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{
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if (mapvals.bump_mapped == TRUE && mapvals.bumpmap_id != -1)
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precompute_normals (0, width, ycount);
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index = 0;
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for (xcount = 0; xcount < width; xcount++)
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{
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p = int_to_pos (xcount, ycount);
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color = (* ray_func) (&p);
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row[index++] = (guchar) (color.r * 255.0);
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row[index++] = (guchar) (color.g * 255.0);
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row[index++] = (guchar) (color.b * 255.0);
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if (has_alpha)
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row[index++] = (guchar) (color.a * 255.0);
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progress_counter++;
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}
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pika_progress_update ((gdouble) progress_counter /
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(gdouble) maxcounter);
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gegl_buffer_set (dest_buffer, GEGL_RECTANGLE (0, ycount, width, 1), 0,
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has_alpha ?
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babl_format ("R'G'B'A u8") : babl_format ("R'G'B' u8"),
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row,
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GEGL_AUTO_ROWSTRIDE);
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}
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pika_progress_update (1.0);
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g_free (row);
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g_object_unref (dest_buffer);
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pika_drawable_merge_shadow (output_drawable, TRUE);
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pika_drawable_update (output_drawable, 0, 0, width, height);
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if (new_image)
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{
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pika_display_new (new_image);
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pika_displays_flush ();
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}
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}
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