int _h3ToFaceIjkWithInitializedFijk()

in src/h3lib/lib/h3Index.c [757:781]

• 18 lines of code
• 8 McCabe index (conditional complexity)

int _h3ToFaceIjkWithInitializedFijk(H3Index h, FaceIJK* fijk) {
    CoordIJK* ijk = &fijk->coord;
    int res = H3_GET_RESOLUTION(h);

    // center base cell hierarchy is entirely on this face
    int possibleOverage = 1;
    if (!_isBaseCellPentagon(H3_GET_BASE_CELL(h)) &&
        (res == 0 ||
         (fijk->coord.i == 0 && fijk->coord.j == 0 && fijk->coord.k == 0)))
        possibleOverage = 0;

    for (int r = 1; r <= res; r++) {
        if (isResClassIII(r)) {
            // Class III == rotate ccw
            _downAp7(ijk);
        } else {
            // Class II == rotate cw
            _downAp7r(ijk);
        }

        _neighbor(ijk, H3_GET_INDEX_DIGIT(h, r));
    }

    return possibleOverage;
}