Method fetch

SlitScan/SlitScan.cpp:160–177

    }

    const Image* fetch(double time,
                       bool nofetch = false) const
    {
        if (!_srcClip) {
            return NULL;
        }
        ImagesMap::const_iterator it = _images.find(time);
        if ( it != _images.end() ) {
            return it->second;
        }
        if (nofetch) {
            assert(false);

            return NULL;
        }

        return _images[time] = _srcClip->fetchImage(time);
    }

    void fetchSet(const std::set<double> &times) const
    {