33 lines
956 B
C++
33 lines
956 B
C++
#include "./image_loader.hpp"
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#include <cassert>
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ImageLoaderI::ImageResult ImageLoaderI::ImageResult::crop(int32_t c_x, int32_t c_y, int32_t c_w, int32_t c_h) const {
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// TODO: proper error handling
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assert(c_x+c_w <= width);
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assert(c_y+c_h <= height);
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ImageLoaderI::ImageResult new_image;
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new_image.width = c_w;
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new_image.height = c_h;
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new_image.file_ext = file_ext;
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for (const auto& input_frame : frames) {
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auto& new_frame = new_image.frames.emplace_back();
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new_frame.ms = input_frame.ms;
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// TODO: improve this, this is super inefficent
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for (int64_t y = c_y; y < c_y + c_h; y++) {
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for (int64_t x = c_x; x < c_x + c_w; x++) {
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new_frame.data.push_back(input_frame.data.at(y*width*4+x*4+0));
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new_frame.data.push_back(input_frame.data.at(y*width*4+x*4+1));
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new_frame.data.push_back(input_frame.data.at(y*width*4+x*4+2));
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new_frame.data.push_back(input_frame.data.at(y*width*4+x*4+3));
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}
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}
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}
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return new_image;
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}
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