Method blockAt

plugins/3dveins.cpp:404–416

    }

    GeoBlock *blockAt(df::coord pos)
    {
        assert(pos.z >= 0);
        if (pos.z >= blocks.size().z)
            blocks.resize_depth(pos.z+1);

        GeoBlock *&blk = blocks(pos);
        if (!blk) {
            blk = new GeoBlock(this, pos);
            block_list.push_back(blk);
        }
        return blk;
    }

    GeoBlock *getBlockAt(df::coord pos)
    {