pandemonium_engine/modules/wfc/image_indexer.cpp

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2022-04-22 22:54:42 +02:00
#include "image_indexer.h"
#include "core/oa_hash_map.h"
PoolColorArray ImageIndexer::get_colors() {
return _colors;
}
PoolIntArray ImageIndexer::get_color_indices() {
return _color_indices;
}
void ImageIndexer::index_image(Ref<Image> image) {
ERR_FAIL_COND(!image.is_valid());
_colors.resize(0);
_color_indices.resize(0);
OAHashMap<Color, int> col_map;
image->lock();
int w = image->get_width();
int h = image->get_height();
for (int x = 0; x < w; ++x) {
for (int y = 0; y < h; ++y) {
Color c = image->get_pixel(x, y);
int color_index = 0;
if (!col_map.lookup(c, color_index)) {
color_index = _colors.size();
_colors.push_back(c);
col_map.set(c, color_index);
}
_color_indices.push_back(color_index);
}
}
image->unlock();
}
PoolByteArray ImageIndexer::indices_to_argb8_data(const PoolIntArray &indices) {
PoolByteArray arr;
arr.resize(indices.size() * 4);
PoolByteArray::Write arrw = arr.write();
PoolIntArray::Read indr = indices.read();
int s = indices.size();
for (int i = 0; i < s; ++i) {
int arrind = i * 4;
Color c = _colors[indr[i]];
arrw[arrind] = static_cast<uint8_t>(c.r * 255);
arrw[arrind + 1] = static_cast<uint8_t>(c.g * 255);
arrw[arrind + 2] = static_cast<uint8_t>(c.b * 255);
arrw[arrind + 3] = static_cast<uint8_t>(c.a * 255);
}
return arr;
}
ImageIndexer::ImageIndexer() {
}
ImageIndexer::~ImageIndexer() {
}
void ImageIndexer::_bind_methods() {
ClassDB::bind_method(D_METHOD("get_colors"), &ImageIndexer::get_colors);
ClassDB::bind_method(D_METHOD("get_color_indices"), &ImageIndexer::get_color_indices);
ClassDB::bind_method(D_METHOD("index_image"), &ImageIndexer::index_image);
ClassDB::bind_method(D_METHOD("indices_to_argb8_data"), &ImageIndexer::indices_to_argb8_data);
}