phundrak/surfaces-unies
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Phuntsok Drak-pa 2018-12-17 14:50:01 +01:00
parent 93e43941b8
commit a8b16be07d
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1 changed files with 7 additions and 1 deletions
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8
src/compress.c
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@ -59,15 +59,18 @@ void addPixelToSelectedZone(Image *t_img, int64_t t_idx, Zone *t_zone) {
const uint32_t y = (uint32_t)(t_idx / t_img->sizeX); const uint32_t y = (uint32_t)(t_idx / t_img->sizeX);
int64_t left_limit, right_limit; int64_t left_limit, right_limit;
const int64_t xd_limit = (int64_t)t_img->sizeX * (y + 1); const int64_t xd_limit = (int64_t)t_img->sizeX * (y + 1);
if (t_idx >= (int64_t)img_size || t_idx < 0) { if (t_idx >= (int64_t)img_size || t_idx < 0) { /* Pixel in range? */
return; return;
} }
current_pixel = darrayGet(t_img->pixels, (size_t)t_idx); current_pixel = darrayGet(t_img->pixels, (size_t)t_idx);
/* Pixel already visited or of the right color? */
if (current_pixel->visited || !sameColor(current_pixel, t_zone)) { if (current_pixel->visited || !sameColor(current_pixel, t_zone)) {
return; return;
} }
(*current_pixel).visited = 1; (*current_pixel).visited = 1;
/* right limit */
for (right_limit = t_idx; right_limit < xd_limit; ++right_limit) { for (right_limit = t_idx; right_limit < xd_limit; ++right_limit) {
current_pixel = darrayGet(t_img->pixels, (size_t)right_limit); current_pixel = darrayGet(t_img->pixels, (size_t)right_limit);
if (!sameColor(current_pixel, t_zone)) { if (!sameColor(current_pixel, t_zone)) {
@ -75,6 +78,7 @@ void addPixelToSelectedZone(Image *t_img, int64_t t_idx, Zone *t_zone) {
} }
current_pixel->visited = 1; current_pixel->visited = 1;
} }
/* left limit */
for (left_limit = t_idx; left_limit - (y - 1) * (int64_t)t_img->sizeX >= 0; for (left_limit = t_idx; left_limit - (y - 1) * (int64_t)t_img->sizeX >= 0;
--left_limit) { --left_limit) {
current_pixel = darrayGet(t_img->pixels, (size_t)left_limit); current_pixel = darrayGet(t_img->pixels, (size_t)left_limit);
@ -86,9 +90,11 @@ void addPixelToSelectedZone(Image *t_img, int64_t t_idx, Zone *t_zone) {
darrayPushBack(t_zone->segments, darrayPushBack(t_zone->segments,
newSegment((uint32_t)right_limit, (uint32_t)left_limit)); newSegment((uint32_t)right_limit, (uint32_t)left_limit));
/* for each pixel of the segment, test the pixel above */
for (; left_limit <= right_limit; ++left_limit) { for (; left_limit <= right_limit; ++left_limit) {
addPixelToSelectedZone(t_img, t_idx + t_img->sizeX, t_zone); addPixelToSelectedZone(t_img, t_idx + t_img->sizeX, t_zone);
} }
/* for each pixel of the segment, test the pixel below */
for (; left_limit <= right_limit; ++left_limit) { for (; left_limit <= right_limit; ++left_limit) {
addPixelToSelectedZone(t_img, t_idx - t_img->sizeX, t_zone); addPixelToSelectedZone(t_img, t_idx - t_img->sizeX, t_zone);
} }