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#pragma once
#include <glm/vec2.hpp>
#include <span>
#include <vector>
class TexturePacker {
public:
using Position = glm::uvec2;
using Size = glm::uvec2;
struct Area {
#ifndef __cpp_aggregate_paren_init
constexpr Area(Position p, Size s) : position {std::move(p)}, size {std::move(s)} { }
#endif
Position position;
Size size;
bool
operator<(const Area & other) const
{
return area(size) < area(other.size);
}
};
using Image = Size;
using Space = Area;
using Positions = std::vector<Position>;
using Result = std::pair<Positions, Size>;
TexturePacker(std::span<const Image>);
Result pack(Size) const;
Result pack() const;
Size minSize() const;
static decltype(Size::x) area(const Size & size);
private:
std::span<const Image> inputImages;
std::vector<size_t> sortedIndexes;
unsigned int maxTextureSize;
};
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