1 /*
2 Open Asset Import Library (assimp)
3 ----------------------------------------------------------------------
4 
5 Copyright (c) 2006-2017, assimp team
6 
7 All rights reserved.
8 
9 Redistribution and use of this software in source and binary forms,
10 with or without modification, are permitted provided that the
11 following conditions are met:
12 
13 * Redistributions of source code must retain the above
14   copyright notice, this list of conditions and the
15   following disclaimer.
16 
17 * Redistributions in binary form must reproduce the above
18   copyright notice, this list of conditions and the
19   following disclaimer in the documentation and/or other
20   materials provided with the distribution.
21 
22 * Neither the name of the assimp team, nor the names of its
23   contributors may be used to endorse or promote products
24   derived from this software without specific prior
25   written permission of the assimp team.
26 
27 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
28 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
29 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
30 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
31 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
32 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
33 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
34 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
35 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
36 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
37 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 
39 ----------------------------------------------------------------------
40 */
41 
42 /** @file  DXFLoader.h
43  *  @brief Declaration of the .dxf importer class.
44  */
45 #ifndef AI_DXFLOADER_H_INCLUDED
46 #define AI_DXFLOADER_H_INCLUDED
47 
48 #include "BaseImporter.h"
49 #include <map>
50 
51 namespace Assimp    {
52     namespace DXF {
53 
54         class LineReader;
55         struct FileData;
56         struct PolyLine;
57         struct Block;
58         struct InsertBlock;
59 
60         typedef std::map<std::string, const DXF::Block*> BlockMap;
61     }
62 
63 
64 // ---------------------------------------------------------------------------
65 /** DXF importer implementation.
66  *
67 */
68 class DXFImporter : public BaseImporter
69 {
70 public:
71     DXFImporter();
72     ~DXFImporter();
73 
74 
75 
76 public:
77 
78     // -------------------------------------------------------------------
79     /** Returns whether the class can handle the format of the given file.
80     * See BaseImporter::CanRead() for details.  */
81     bool CanRead( const std::string& pFile, IOSystem* pIOHandler,
82         bool checkSig) const;
83 
84 protected:
85 
86     // -------------------------------------------------------------------
87     /** Return importer meta information.
88      * See #BaseImporter::GetInfo for the details*/
89     const aiImporterDesc* GetInfo () const;
90 
91     // -------------------------------------------------------------------
92     /** Imports the given file into the given scene structure.
93      * See BaseImporter::InternReadFile() for details */
94     void InternReadFile( const std::string& pFile,
95         aiScene* pScene,
96         IOSystem* pIOHandler);
97 
98 private:
99 
100     // -----------------------------------------------------
101     void SkipSection(DXF::LineReader& reader);
102 
103     // -----------------------------------------------------
104     void ParseHeader(DXF::LineReader& reader,
105         DXF::FileData& output);
106 
107     // -----------------------------------------------------
108     void ParseEntities(DXF::LineReader& reader,
109         DXF::FileData& output);
110 
111     // -----------------------------------------------------
112     void ParseBlocks(DXF::LineReader& reader,
113         DXF::FileData& output);
114 
115     // -----------------------------------------------------
116     void ParseBlock(DXF::LineReader& reader,
117         DXF::FileData& output);
118 
119     // -----------------------------------------------------
120     void ParseInsertion(DXF::LineReader& reader,
121         DXF::FileData& output);
122 
123     // -----------------------------------------------------
124     void ParsePolyLine(DXF::LineReader& reader,
125         DXF::FileData& output);
126 
127     // -----------------------------------------------------
128     void ParsePolyLineVertex(DXF::LineReader& reader,
129         DXF::PolyLine& line);
130 
131     // -----------------------------------------------------
132     void Parse3DFace(DXF::LineReader& reader,
133         DXF::FileData& output);
134 
135     // -----------------------------------------------------
136     void ConvertMeshes(aiScene* pScene,
137         DXF::FileData& output);
138 
139     // -----------------------------------------------------
140     void GenerateHierarchy(aiScene* pScene,
141         DXF::FileData& output);
142 
143     // -----------------------------------------------------
144     void GenerateMaterials(aiScene* pScene,
145         DXF::FileData& output);
146 
147     // -----------------------------------------------------
148     void ExpandBlockReferences(DXF::Block& bl,
149         const DXF::BlockMap& blocks_by_name);
150 };
151 
152 } // end of namespace Assimp
153 
154 #endif // AI_3DSIMPORTER_H_INC
155