mirror of
https://github.com/tumic0/GPXSee.git
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99 lines
2.8 KiB
C++
99 lines
2.8 KiB
C++
#ifndef NODFILE_H
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#define NODFILE_H
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#include "subfile.h"
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class NODFile : public SubFile
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{
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public:
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struct BlockInfo
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{
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quint32 offset;
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struct
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{
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quint32 s2; // node lon base
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quint32 s6; // node lat base
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quint32 sa;
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quint16 s0; // flags
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quint16 se; // link info bit size
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quint8 s10; // links count
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quint8 s11; // nodes count
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quint8 s12; // link types count
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} hdr;
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};
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struct LinkInfo
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{
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quint32 linkOffset;
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quint32 nodeOffset;
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quint32 flags;
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};
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struct NodeInfo
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{
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QPoint pos;
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quint8 flags;
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quint8 bytes;
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};
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struct AdjacencyInfo
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{
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AdjacencyInfo(const SubFile *file, const BlockInfo &blockInfo,
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quint32 linkId, const LinkInfo &linkInfo) : extHdl(file),
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blockInfo(blockInfo), nodeOffset(linkInfo.nodeOffset),
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linkOffset(linkInfo.linkOffset), linkId(linkId)
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{}
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Handle extHdl;
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BlockInfo blockInfo;
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NodeInfo nodeInfo;
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quint32 nodeOffset;
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quint32 linkOffset;
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quint32 linkId;
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bool eog;
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};
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NODFile(const IMG *img) : SubFile(img), _indexOffset(0), _indexSize(0),
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_indexFlags(0), _blockOffset(0), _blockSize(0), _indexRecordSize(0),
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_blockRecordSize(0), _blockShift(0), _nodeShift(0), _indexIdSize(0) {}
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NODFile(const QString *path) : SubFile(path), _indexOffset(0), _indexSize(0),
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_indexFlags(0), _blockOffset(0), _blockSize(0), _indexRecordSize(0),
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_blockRecordSize(0), _blockShift(0), _nodeShift(0), _indexIdSize(0) {}
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NODFile(const SubFile *gmp, quint32 offset) : SubFile(gmp, offset),
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_indexOffset(0), _indexSize(0), _indexFlags(0), _blockOffset(0),
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_blockSize(0), _indexRecordSize(0), _blockRecordSize(0), _blockShift(0),
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_nodeShift(0), _indexIdSize(0) {}
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bool load(Handle &hdl);
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quint32 indexIdSize() const {return _indexIdSize;}
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bool blockInfo(Handle &hdl, quint32 blockId, BlockInfo &blockInfo) const;
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bool linkInfo(Handle &hdl, const BlockInfo &blockInfo, quint32 linkId,
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LinkInfo &linkInfo) const;
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bool linkType(Handle &hdl, const BlockInfo &blockInfo, quint8 linkId,
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quint32 &type) const;
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int nextNode(Handle &hdl, AdjacencyInfo &adjInfo) const;
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private:
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bool nodeInfo(Handle &hdl, const BlockInfo &blockInfo, quint32 nodeOffset,
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NodeInfo &nodeInfo) const;
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bool nodeOffset(Handle &hdl, const BlockInfo &blockInfo, quint8 nodeId,
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quint32 &nodeOffset) const;
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bool absAdjInfo(Handle &hdl, AdjacencyInfo &adj) const;
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bool relAdjInfo(Handle &hdl, AdjacencyInfo &adj) const;
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bool adjacencyInfo(Handle &hdl, AdjacencyInfo &adj) const
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{
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return (adj.nodeInfo.flags & 0x20) ? absAdjInfo(hdl, adj)
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: relAdjInfo(hdl, adj);
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}
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bool nodeBlock(Handle &hdl, quint32 nodeOffset, BlockInfo &blockInfo) const;
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bool readBlock(Handle &hdl, quint32 blockOffset, BlockInfo &blockInfo) const;
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quint32 _flags, _indexOffset, _indexSize, _indexFlags, _blockOffset,
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_blockSize;
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quint16 _indexRecordSize, _blockRecordSize;
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quint8 _blockShift, _nodeShift, _indexIdSize;
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};
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#endif // NETFILE_H
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