Function is_rectangular

plugins/blueprint.cpp:689–700

}

static bool is_rectangular(const df::building *bld) {
    const df::building::T_room &room = bld->room;
    if (!room.extents)
        return true;
    for (int32_t y = 0; y < room.height; ++y) {
        for (int32_t x = 0; x < room.width; ++x) {
            if (!room.extents[y * room.width + x])
                return false;
        }
    }
    return true;
}

static bool is_rectangular(const tile_context &ctx) {
    return is_rectangular(ctx.b);