1 /*
2 Open Asset Import Library (assimp)
3 ----------------------------------------------------------------------
4 
5 Copyright (c) 2006-2016, assimp team
6 All rights reserved.
7 
8 Redistribution and use of this software in source and binary forms,
9 with or without modification, are permitted provided that the
10 following conditions are met:
11 
12 * Redistributions of source code must retain the above
13   copyright notice, this list of conditions and the
14   following disclaimer.
15 
16 * Redistributions in binary form must reproduce the above
17   copyright notice, this list of conditions and the
18   following disclaimer in the documentation and/or other
19   materials provided with the distribution.
20 
21 * Neither the name of the assimp team, nor the names of its
22   contributors may be used to endorse or promote products
23   derived from this software without specific prior
24   written permission of the assimp team.
25 
26 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 
38 ----------------------------------------------------------------------
39 */
40 
41 /** @file  DXFLoader.h
42  *  @brief Declaration of the .dxf importer class.
43  */
44 #ifndef AI_DXFLOADER_H_INCLUDED
45 #define AI_DXFLOADER_H_INCLUDED
46 
47 #include "BaseImporter.h"
48 
49 namespace Assimp    {
50     namespace DXF {
51 
52         class LineReader;
53         struct FileData;
54         struct PolyLine;
55         struct Block;
56         struct InsertBlock;
57 
58         typedef std::map<std::string, const DXF::Block*> BlockMap;
59     }
60 
61 
62 // ---------------------------------------------------------------------------
63 /** DXF importer implementation.
64  *
65 */
66 class DXFImporter : public BaseImporter
67 {
68 public:
69     DXFImporter();
70     ~DXFImporter();
71 
72 
73 
74 public:
75 
76     // -------------------------------------------------------------------
77     /** Returns whether the class can handle the format of the given file.
78     * See BaseImporter::CanRead() for details.  */
79     bool CanRead( const std::string& pFile, IOSystem* pIOHandler,
80         bool checkSig) const;
81 
82 protected:
83 
84     // -------------------------------------------------------------------
85     /** Return importer meta information.
86      * See #BaseImporter::GetInfo for the details*/
87     const aiImporterDesc* GetInfo () const;
88 
89     // -------------------------------------------------------------------
90     /** Imports the given file into the given scene structure.
91      * See BaseImporter::InternReadFile() for details */
92     void InternReadFile( const std::string& pFile,
93         aiScene* pScene,
94         IOSystem* pIOHandler);
95 
96 private:
97 
98     // -----------------------------------------------------
99     void SkipSection(DXF::LineReader& reader);
100 
101     // -----------------------------------------------------
102     void ParseHeader(DXF::LineReader& reader,
103         DXF::FileData& output);
104 
105     // -----------------------------------------------------
106     void ParseEntities(DXF::LineReader& reader,
107         DXF::FileData& output);
108 
109     // -----------------------------------------------------
110     void ParseBlocks(DXF::LineReader& reader,
111         DXF::FileData& output);
112 
113     // -----------------------------------------------------
114     void ParseBlock(DXF::LineReader& reader,
115         DXF::FileData& output);
116 
117     // -----------------------------------------------------
118     void ParseInsertion(DXF::LineReader& reader,
119         DXF::FileData& output);
120 
121     // -----------------------------------------------------
122     void ParsePolyLine(DXF::LineReader& reader,
123         DXF::FileData& output);
124 
125     // -----------------------------------------------------
126     void ParsePolyLineVertex(DXF::LineReader& reader,
127         DXF::PolyLine& line);
128 
129     // -----------------------------------------------------
130     void Parse3DFace(DXF::LineReader& reader,
131         DXF::FileData& output);
132 
133     // -----------------------------------------------------
134     void ConvertMeshes(aiScene* pScene,
135         DXF::FileData& output);
136 
137     // -----------------------------------------------------
138     void GenerateHierarchy(aiScene* pScene,
139         DXF::FileData& output);
140 
141     // -----------------------------------------------------
142     void GenerateMaterials(aiScene* pScene,
143         DXF::FileData& output);
144 
145     // -----------------------------------------------------
146     void ExpandBlockReferences(DXF::Block& bl,
147         const DXF::BlockMap& blocks_by_name);
148 };
149 
150 } // end of namespace Assimp
151 
152 #endif // AI_3DSIMPORTER_H_INC
153