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
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
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,
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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 Defines the helper data structures for importing 3DS files.
43http://www.jalix.org/ressources/graphics/3DS/_unofficials/3ds-unofficial.txt */
44
45#ifndef AI_SMOOTHINGGROUPS_H_INC
46#define AI_SMOOTHINGGROUPS_H_INC
47
48#include <assimp/vector3.h>
49#include <stdint.h>
50#include <vector>
51
52// ---------------------------------------------------------------------------
53/** Helper structure representing a face with smoothing groups assigned */
54struct FaceWithSmoothingGroup
55{
56 FaceWithSmoothingGroup()
57 : mIndices(),
58 iSmoothGroup(0)
59 {
60 // in debug builds set all indices to a common magic value
61#ifdef ASSIMP_BUILD_DEBUG
62 this->mIndices[0] = 0xffffffff;
63 this->mIndices[1] = 0xffffffff;
64 this->mIndices[2] = 0xffffffff;
65#endif
66 }
67
68
69 //! Indices. .3ds is using uint16. However, after
70 //! an unique vertex set has been generated,
71 //! individual index values might exceed 2^16
72 uint32_t mIndices[3];
73
74 //! specifies to which smoothing group the face belongs to
75 uint32_t iSmoothGroup;
76};
77
78// ---------------------------------------------------------------------------
79/** Helper structure representing a mesh whose faces have smoothing
80 groups assigned. This allows us to reuse the code for normal computations
81 from smoothings groups for several loaders (3DS, ASE). All of them
82 use face structures which inherit from #FaceWithSmoothingGroup,
83 but as they add extra members and need to be copied by value we
84 need to use a template here.
85 */
86template <class T>
87struct MeshWithSmoothingGroups
88{
89 //! Vertex positions
90 std::vector<aiVector3D> mPositions;
91
92 //! Face lists
93 std::vector<T> mFaces;
94
95 //! List of normal vectors
96 std::vector<aiVector3D> mNormals;
97};
98
99// ---------------------------------------------------------------------------
100/** Computes normal vectors for the mesh
101 */
102template <class T>
103void ComputeNormalsWithSmoothingsGroups(MeshWithSmoothingGroups<T>& sMesh);
104
105
106// include implementations
107#include "SmoothingGroups.inl"
108
109#endif // !! AI_SMOOTHINGGROUPS_H_INC
110