50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
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#ifndef IGL_DFS_H
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#define IGL_DFS_H
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#include "igl_inline.h"
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#include <Eigen/Core>
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#include <vector>
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namespace igl
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{
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// Traverse a **directed** graph represented by an adjacency list using
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// depth first search
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//
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// Inputs:
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// A #V list of adjacency lists
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// s starting node (index into A)
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// Outputs:
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// D #V list of indices into rows of A in the order in which graph nodes
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// are discovered.
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// P #V list of indices into rows of A of predecessor in resulting
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// spanning tree {-1 indicates root/not discovered), order corresponds to
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// V **not** D.
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// C #V list of indices into rows of A in order that nodes are "closed"
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// (all descendants have been discovered)
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template <
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typename AType,
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typename DerivedD,
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typename DerivedP,
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typename DerivedC>
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IGL_INLINE void dfs(
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const std::vector<std::vector<AType> > & A,
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const size_t s,
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Eigen::PlainObjectBase<DerivedD> & D,
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Eigen::PlainObjectBase<DerivedP> & P,
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Eigen::PlainObjectBase<DerivedC> & C);
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template <
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typename AType,
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typename DType,
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typename PType,
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typename CType>
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IGL_INLINE void dfs(
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const std::vector<std::vector<AType> > & A,
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const size_t s,
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std::vector<DType> & D,
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std::vector<PType> & P,
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std::vector<CType> & C);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "dfs.cpp"
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#endif
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#endif
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