kazu
9947dced15
added new helper methods/classes (e.g. for heading) new test cases optimize the dijkstra cleanups/refactoring added timed-benchmarks to the log many more...
67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
#ifndef GRIDNEIGHBORITERATOR_H
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#define GRIDNEIGHBORITERATOR_H
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/** allows iterating over all neighbors of one node */
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class NeighborIter : std::iterator<std::input_iterator_tag, int> {
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private:
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/** the grid the src-node belongs to */
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Grid<gridSize_cm, T>* grid;
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/** index of the source-node within its grid */
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int srcNodeIdx;
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/** index of the current neighbor [0:10] */
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int nIdx;
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public:
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/** ctor */
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NeighborIter(const Grid<gridSize_cm, T>& grid, const int srcNodeIdx, const int nIdx) :
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grid((Grid<gridSize_cm, T>*)&grid), srcNodeIdx(srcNodeIdx), nIdx(nIdx) {;}
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/** next neighbor */
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NeighborIter& operator++() {++nIdx; return *this;}
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/** next neighbor */
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NeighborIter operator++(int) {NeighborIter tmp(*this); operator++(); return tmp;}
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/** compare with other iterator */
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bool operator==(const NeighborIter& rhs) {return srcNodeIdx == rhs.srcNodeIdx && nIdx == rhs.nIdx;}
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/** compare with other iterator */
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bool operator!=(const NeighborIter& rhs) {return srcNodeIdx != rhs.srcNodeIdx || nIdx != rhs.nIdx;}
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/** get the neighbor the iterator currently points to */
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T& operator*() {return (T&) grid->getNeighbor(srcNodeIdx, nIdx);}
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};
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/** allows for-each iteration over all neighbors of one node */
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class NeighborForEach {
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private:
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/** the grid the src-node belongs to */
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const Grid<gridSize_cm, T>& grid;
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/** index of the source-node within its grid */
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const int srcNodeIdx;
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public:
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/** ctor */
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NeighborForEach(const Grid<gridSize_cm, T>& grid, const int srcNodeIdx) :
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grid(grid), srcNodeIdx(srcNodeIdx) {;}
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/** starting point */
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NeighborIter begin() {return NeighborIter(grid, srcNodeIdx, 0);}
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/** end point */
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NeighborIter end() {return NeighborIter(grid, srcNodeIdx, grid[srcNodeIdx]._numNeighbors);}
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};
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#endif // GRIDNEIGHBORITERATOR_H
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