glm::ivec2 squareRotXY(glm::ivec2 pos, int mod, ROT angle) {
    switch (angle) {
    case ROT_90:
        return glm::ivec2(mod - 1 - pos.y, pos.x);
    case ROT_180:
        return glm::ivec2(mod - 1 - pos.x, mod - 1 - pos.y);
    case ROT_270:
        return glm::ivec2(pos.y, mod - 1 - pos.x);
    }
    return pos;
}

void CuboidCoordsI::Bind(int mod) {
    FaceTranny ft;
    while (true) {
        if (x >= mod) {
            ft = faceLUT[face].Left;
            x -= mod;
        }
        else    if (z >= mod) {
            ft = faceLUT[face].Up;
            z -= mod;
        }
        else    if (x < 0) {
            ft = faceLUT[face].Right;
            x += mod;
        }
        else    if (z < 0) {
            ft = faceLUT[face].Down;
            z += mod;
        }
        else { return; }
        if (ft.face != -1) {
            glm::ivec2 pos = squareRotXY(glm::ivec2(x, z), mod, ft.rot);
            x = pos.x;
            z = pos.y;
            face = ft.face;
        }
    }
}