1/*
2Open Asset Import Library (assimp)
3----------------------------------------------------------------------
4
5Copyright (c) 2006-2017, assimp team
6
7All rights reserved.
8
9Redistribution and use of this software in source and binary forms,
10with or without modification, are permitted provided that the
11following conditions are met:
12
13* Redistributions of source code must retain the above
14copyright notice, this list of conditions and the
15following disclaimer.
16
17* Redistributions in binary form must reproduce the above
18copyright notice, this list of conditions and the
19following disclaimer in the documentation and/or other
20materials provided with the distribution.
21
22* Neither the name of the assimp team, nor the names of its
23contributors may be used to endorse or promote products
24derived from this software without specific prior
25written permission of the assimp team.
26
27THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
28"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
29LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
30A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
31OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
32SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
33LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
34DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
35THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
36(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
37OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38
39----------------------------------------------------------------------
40*/
41
42/** @file GltfExporter.h
43* Declares the exporter class to write a scene to a gltf/glb file
44*/
45#ifndef AI_GLTF2EXPORTER_H_INC
46#define AI_GLTF2EXPORTER_H_INC
47
48#ifndef ASSIMP_BUILD_NO_GLTF_IMPORTER
49
50#include <assimp/types.h>
51#include <assimp/material.h>
52
53#include <sstream>
54#include <vector>
55#include <map>
56#include <memory>
57
58struct aiScene;
59struct aiNode;
60struct aiMaterial;
61
62namespace glTF2
63{
64 template<class T>
65 class Ref;
66
67 class Asset;
68 struct TexProperty;
69 struct TextureInfo;
70 struct NormalTextureInfo;
71 struct OcclusionTextureInfo;
72 struct Node;
73 struct Texture;
74
75 // Vec/matrix types, as raw float arrays
76 typedef float (vec3)[3];
77 typedef float (vec4)[4];
78}
79
80namespace Assimp
81{
82 class IOSystem;
83 class IOStream;
84 class ExportProperties;
85
86 // ------------------------------------------------------------------------------------------------
87 /** Helper class to export a given scene to an glTF file. */
88 // ------------------------------------------------------------------------------------------------
89 class glTF2Exporter
90 {
91 public:
92 /// Constructor for a specific scene to export
93 glTF2Exporter(const char* filename, IOSystem* pIOSystem, const aiScene* pScene,
94 const ExportProperties* pProperties, bool binary);
95
96 private:
97
98 const char* mFilename;
99 IOSystem* mIOSystem;
100 const aiScene* mScene;
101 const ExportProperties* mProperties;
102
103 std::map<std::string, unsigned int> mTexturesByPath;
104
105 std::shared_ptr<glTF2::Asset> mAsset;
106
107 std::vector<unsigned char> mBodyData;
108
109 void WriteBinaryData(IOStream* outfile, std::size_t sceneLength);
110
111 void GetTexSampler(const aiMaterial* mat, glTF2::Ref<glTF2::Texture> texture, aiTextureType tt, unsigned int slot);
112 void GetMatTexProp(const aiMaterial* mat, unsigned int& prop, const char* propName, aiTextureType tt, unsigned int idx);
113 void GetMatTexProp(const aiMaterial* mat, float& prop, const char* propName, aiTextureType tt, unsigned int idx);
114 void GetMatTex(const aiMaterial* mat, glTF2::Ref<glTF2::Texture>& texture, aiTextureType tt, unsigned int slot);
115 void GetMatTex(const aiMaterial* mat, glTF2::TextureInfo& prop, aiTextureType tt, unsigned int slot);
116 void GetMatTex(const aiMaterial* mat, glTF2::NormalTextureInfo& prop, aiTextureType tt, unsigned int slot);
117 void GetMatTex(const aiMaterial* mat, glTF2::OcclusionTextureInfo& prop, aiTextureType tt, unsigned int slot);
118 aiReturn GetMatColor(const aiMaterial* mat, glTF2::vec4& prop, const char* propName, int type, int idx);
119 aiReturn GetMatColor(const aiMaterial* mat, glTF2::vec3& prop, const char* propName, int type, int idx);
120 void ExportMetadata();
121 void ExportMaterials();
122 void ExportMeshes();
123 void MergeMeshes();
124 unsigned int ExportNodeHierarchy(const aiNode* n);
125 unsigned int ExportNode(const aiNode* node, glTF2::Ref<glTF2::Node>& parent);
126 void ExportScene();
127 void ExportAnimations();
128 };
129
130}
131
132#endif // ASSIMP_BUILD_NO_GLTF_IMPORTER
133
134#endif // AI_GLTF2EXPORTER_H_INC
135