Univerxel/src/contouring/surrounding.hpp

#pragma once

#include "../data/geometry/Faces.hpp"
#include "../world/forward.h"

namespace world {
    class Chunk;
}
namespace contouring::surrounding {
    const auto CENTER = 6;
    typedef std::array<std::shared_ptr<const world::Chunk>, CENTER+1> faces;

    bool load(faces &out, const chunk_pos &chunkPos, const world::ChunkContainer &chunks);

    std::pair<ushort, ushort> getNeighborIdx(ushort idx, geometry::Face face);

    typedef std::array<std::shared_ptr<const world::Chunk>, 8> corners;
    const chunk_pos g_corner_offsets[8] = {
        chunk_pos(0, 0, 0),
        chunk_pos(0, 0, 1),
        chunk_pos(0, 1, 0),
        chunk_pos(0, 1, 1),
        chunk_pos(1, 0, 0),
        chunk_pos(1, 0, 1),
        chunk_pos(1, 1, 0),
        chunk_pos(1, 1, 1),
    };

    bool load(corners &out, const chunk_pos &chunkPos, const world::ChunkContainer &chunks);
}