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Image.replace_color #19234

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Image.replace_color #19234

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48 changes: 48 additions & 0 deletions core/image.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1868,6 +1868,53 @@ void Image::fill(const Color &c) {
unlock();
}

void Image::replace_color(const Color &p_color_old, const Color &p_color_new) {

if (p_color_old != p_color_new) {

uint32_t pixel_size = get_format_pixel_size(format);

uint8_t colorb_new[16];
uint8_t colorb_old[16];
uint8_t colorb_current[16];

Image new_img(2, 1, 0, format);
new_img.lock();

new_img.set_pixel(0, 0, p_color_new);
new_img.set_pixel(1, 0, p_color_old);

PoolVector<uint8_t>::Read r_dummy = new_img.data.read();
new_img._get_pixelb(0, 0, pixel_size, r_dummy.ptr(), colorb_new);
new_img._get_pixelb(1, 0, pixel_size, r_dummy.ptr(), colorb_old);

new_img.unlock();

lock();

PoolVector<uint8_t>::Read r = data.read();
PoolVector<uint8_t>::Write w = data.write();

bool found = false;
for (int y = 0; y < height; y++) {

for (int x = 0; x < width; x++) {
found = true;
_get_pixelb(x, y, pixel_size, r.ptr(), colorb_current);
for (uint32_t i = 0; i < pixel_size; i++)
if (colorb_current[i] != colorb_old[i]) {
found = false;
}
if (found) {
_put_pixelb(x, y, pixel_size, w.ptr(), colorb_new);
}
}
}

unlock();
}
}

Ref<Image> (*Image::_png_mem_loader_func)(const uint8_t *, int) = NULL;
Ref<Image> (*Image::_jpg_mem_loader_func)(const uint8_t *, int) = NULL;

Expand Down Expand Up @@ -2308,6 +2355,7 @@ void Image::_bind_methods() {
ClassDB::bind_method(D_METHOD("blend_rect", "src", "src_rect", "dst"), &Image::blend_rect);
ClassDB::bind_method(D_METHOD("blend_rect_mask", "src", "mask", "src_rect", "dst"), &Image::blend_rect_mask);
ClassDB::bind_method(D_METHOD("fill", "color"), &Image::fill);
ClassDB::bind_method(D_METHOD("replace_color", "color_old", "color_new"), &Image::replace_color);

ClassDB::bind_method(D_METHOD("get_used_rect"), &Image::get_used_rect);
ClassDB::bind_method(D_METHOD("get_rect", "rect"), &Image::get_rect);
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1 change: 1 addition & 0 deletions core/image.h
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Expand Up @@ -291,6 +291,7 @@ class Image : public Resource {
void blend_rect(const Ref<Image> &p_src, const Rect2 &p_src_rect, const Point2 &p_dest);
void blend_rect_mask(const Ref<Image> &p_src, const Ref<Image> &p_mask, const Rect2 &p_src_rect, const Point2 &p_dest);
void fill(const Color &c);
void replace_color(const Color &color_old, const Color &color_new);

Rect2 get_used_rect() const;
Ref<Image> get_rect(const Rect2 &p_area) const;
Expand Down