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1 | // Author: Kirill Gavrilov |
2 | // Copyright (c) 2019 OPEN CASCADE SAS |
3 | // |
4 | // This file is part of Open CASCADE Technology software library. |
5 | // |
6 | // This library is free software; you can redistribute it and/or modify it under |
7 | // the terms of the GNU Lesser General Public License version 2.1 as published |
8 | // by the Free Software Foundation, with special exception defined in the file |
9 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
10 | // distribution for complete text of the license and disclaimer of any warranty. |
11 | // |
12 | // Alternatively, this file may be used under the terms of Open CASCADE |
13 | // commercial license or contractual agreement. |
14 | |
15 | #ifndef _RWGltf_TriangulationReader_HeaderFile |
16 | #define _RWGltf_TriangulationReader_HeaderFile |
17 | |
18 | #include <RWGltf_PrimitiveArrayReader.hxx> |
19 | |
20 | //! RWGltf_PrimitiveArrayReader implementation creating Poly_Triangulation. |
21 | class RWGltf_TriangulationReader : public RWGltf_PrimitiveArrayReader |
22 | { |
23 | DEFINE_STANDARD_RTTIEXT(RWGltf_TriangulationReader, RWGltf_PrimitiveArrayReader) |
24 | public: |
25 | |
26 | //! Empty constructor. |
27 | Standard_EXPORT RWGltf_TriangulationReader(); |
28 | |
29 | protected: |
30 | |
31 | //! Create Poly_Triangulation from collected data |
32 | Standard_EXPORT virtual Handle(Poly_Triangulation) result() Standard_OVERRIDE; |
33 | |
34 | //! Reset cache before loading primitive array. |
35 | Standard_EXPORT virtual void reset() Standard_OVERRIDE; |
36 | |
37 | //! Fill triangulation data and ignore non-triangulation primitives. |
38 | //! @param theStream input stream to read from |
39 | //! @param theName entity name for logging errors |
40 | //! @param theAccessor buffer accessor |
41 | //! @param theType array type |
42 | //! @param theMode primitive mode |
43 | //! @return FALSE on error |
44 | Standard_EXPORT virtual bool readBuffer (std::istream& theStream, |
45 | const TCollection_AsciiString& theName, |
46 | const RWGltf_GltfAccessor& theAccessor, |
47 | RWGltf_GltfArrayType theType, |
48 | RWGltf_GltfPrimitiveMode theMode) Standard_OVERRIDE; |
49 | |
50 | protected: //! @name interface for filling triangulation data |
51 | |
52 | //! Resize array of position nodes to specified size. |
53 | virtual bool setNbPositionNodes (Standard_Integer theNbNodes) |
54 | { |
55 | if (theNbNodes <= 0) |
56 | { |
57 | return false; |
58 | } |
59 | myTriangulation->ChangeNodes().Resize (1, theNbNodes, false); |
60 | return true; |
61 | } |
62 | |
63 | //! Set node position. |
64 | //! @param theIndex node index starting from 1 |
65 | //! @param thePnt node position |
66 | virtual void setNodePosition (Standard_Integer theIndex, |
67 | const gp_Pnt& thePnt) |
68 | { |
69 | myTriangulation->ChangeNode (theIndex) = thePnt; |
70 | } |
71 | |
72 | //! Resize array of UV nodes to specified size. |
73 | virtual bool setNbUVNodes (Standard_Integer theNbNodes) |
74 | { |
75 | if (theNbNodes <= 0 |
76 | || myTriangulation->NbNodes() != theNbNodes) |
77 | { |
78 | return false; |
79 | } |
80 | myTriangulation->ChangeUVNodes().Resize (1, theNbNodes, false); |
81 | return true; |
82 | } |
83 | |
84 | //! Set node UV texture coordinates. |
85 | //! @param theIndex node index starting from 1 |
86 | //! @param theUV node UV coordinates |
87 | virtual void setNodeUV (Standard_Integer theIndex, |
88 | const gp_Pnt2d& theUV) |
89 | { |
90 | myTriangulation->ChangeUVNode (theIndex) = theUV; |
91 | } |
92 | |
93 | //! Resize array of nodes normals to specified size. |
94 | virtual bool setNbNormalNodes (Standard_Integer theNbNodes) |
95 | { |
96 | if (theNbNodes <= 0 |
97 | || myTriangulation->NbNodes() != theNbNodes) |
98 | { |
99 | return false; |
100 | } |
101 | myTriangulation->SetNormals (new TShort_HArray1OfShortReal (1, theNbNodes * 3)); |
102 | return true; |
103 | } |
104 | |
105 | //! Set node normal. |
106 | //! @param theIndex node index starting from 1 |
107 | //! @param theNormal node normal |
108 | virtual void setNodeNormal (Standard_Integer theIndex, |
109 | const gp_Dir& theNormal) |
110 | { |
111 | myTriangulation->SetNormal (theIndex, theNormal); |
112 | } |
113 | |
114 | //! Resize array of triangles to specified size. |
115 | virtual bool setNbTriangles (Standard_Integer theNbTris) |
116 | { |
117 | if (theNbTris >= 1) |
118 | { |
119 | myTriangulation->ChangeTriangles().Resize (1, theNbTris, false); |
120 | return true; |
121 | } |
122 | return false; |
123 | } |
124 | |
125 | //! Add triangle element. |
126 | //! @param theIndex triangle index starting from 1 |
127 | //! @param theTriangle triangle nodes starting from 1 |
128 | //! @return FALSE if node indexes are out of range |
129 | virtual bool setTriangle (Standard_Integer theIndex, |
130 | const Poly_Triangle& theTriangle) |
131 | { |
132 | if (theTriangle.Value (1) < myTriangulation->Nodes().Lower() || theTriangle.Value (1) > myTriangulation->Nodes().Upper() |
133 | || theTriangle.Value (2) < myTriangulation->Nodes().Lower() || theTriangle.Value (2) > myTriangulation->Nodes().Upper() |
134 | || theTriangle.Value (3) < myTriangulation->Nodes().Lower() || theTriangle.Value (3) > myTriangulation->Nodes().Upper()) |
135 | { |
136 | return false; |
137 | } |
138 | myTriangulation->ChangeTriangle (theIndex) = theTriangle; |
139 | return true; |
140 | } |
141 | |
142 | protected: |
143 | |
144 | Handle(Poly_Triangulation) myTriangulation; |
145 | |
146 | }; |
147 | |
148 | #endif // _RWGltf_TriangulationReader_HeaderFile |