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1 | // Created on: 2004-06-10 |
2 | // Created by: Alexander SOLOVYOV |
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3 | // Copyright (c) 2004-2014 OPEN CASCADE SAS |
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4 | // |
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5 | // This file is part of Open CASCADE Technology software library. |
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6 | // |
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7 | // This library is free software; you can redistribute it and/or modify it under |
8 | // the terms of the GNU Lesser General Public License version 2.1 as published |
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9 | // by the Free Software Foundation, with special exception defined in the file |
10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
11 | // distribution for complete text of the license and disclaimer of any warranty. |
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12 | // |
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13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. |
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15 | |
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16 | #include <XSDRAWSTLVRML_DataSource.hxx> |
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17 | |
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18 | #include <Precision.hxx> |
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19 | #include <Standard_Type.hxx> |
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20 | #include <TColgp_SequenceOfXYZ.hxx> |
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21 | #include <TColStd_DataMapOfIntegerInteger.hxx> |
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22 | #include <TColStd_DataMapOfIntegerReal.hxx> |
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23 | |
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24 | IMPLEMENT_STANDARD_RTTIEXT(XSDRAWSTLVRML_DataSource,MeshVS_DataSource) |
25 | |
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26 | //================================================================ |
27 | // Function : Constructor |
28 | // Purpose : |
29 | //================================================================ |
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30 | XSDRAWSTLVRML_DataSource::XSDRAWSTLVRML_DataSource (const Handle(Poly_Triangulation)& aMesh) |
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31 | { |
32 | myMesh = aMesh; |
33 | |
34 | if( !myMesh.IsNull() ) |
35 | { |
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36 | const TColgp_Array1OfPnt& aCoords = myMesh->Nodes(); |
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37 | Standard_Integer len = aCoords.Length(), i, j; |
38 | myNodeCoords = new TColStd_HArray2OfReal(1, len, 1, 3); |
39 | cout << "Nodes : " << len << endl; |
40 | |
41 | gp_XYZ xyz; |
42 | |
43 | for( i = 1; i <= len; i++ ) |
44 | { |
45 | myNodes.Add( i ); |
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46 | xyz = aCoords(i).XYZ(); |
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47 | |
48 | myNodeCoords->SetValue(i, 1, xyz.X()); |
49 | myNodeCoords->SetValue(i, 2, xyz.Y()); |
50 | myNodeCoords->SetValue(i, 3, xyz.Z()); |
51 | } |
52 | |
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53 | const Poly_Array1OfTriangle& aSeq = myMesh->Triangles(); |
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54 | len = aSeq.Length(); |
55 | myElemNormals = new TColStd_HArray2OfReal(1, len, 1, 3); |
56 | myElemNodes = new TColStd_HArray2OfInteger(1, len, 1, 3); |
57 | |
58 | cout << "Elements : " << len << endl; |
59 | |
60 | for( i = 1; i <= len; i++ ) |
61 | { |
62 | myElements.Add( i ); |
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63 | |
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64 | const Poly_Triangle& aTri = aSeq(i); |
65 | |
66 | Standard_Integer V[3]; |
67 | aTri.Get (V[0], V[1], V[2]); |
68 | |
69 | const gp_Pnt aP1 = aCoords (V[0]); |
70 | const gp_Pnt aP2 = aCoords (V[1]); |
71 | const gp_Pnt aP3 = aCoords (V[2]); |
72 | |
73 | gp_Vec aV1(aP1, aP2); |
74 | gp_Vec aV2(aP2, aP3); |
75 | |
76 | gp_Vec aN = aV1.Crossed(aV2); |
77 | if (aN.SquareMagnitude() > Precision::SquareConfusion()) |
78 | aN.Normalize(); |
79 | else |
80 | aN.SetCoord(0.0, 0.0, 0.0); |
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81 | |
82 | for( j = 0; j < 3; j++ ) |
83 | { |
84 | myElemNodes->SetValue(i, j+1, V[j]); |
85 | } |
86 | |
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87 | myElemNormals->SetValue (i, 1, aN.X()); |
88 | myElemNormals->SetValue (i, 2, aN.Y()); |
89 | myElemNormals->SetValue (i, 3, aN.Z()); |
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90 | } |
91 | } |
92 | cout << "Construction is finished" << endl; |
93 | } |
94 | |
95 | //================================================================ |
96 | // Function : GetGeom |
97 | // Purpose : |
98 | //================================================================ |
99 | Standard_Boolean XSDRAWSTLVRML_DataSource::GetGeom |
100 | ( const Standard_Integer ID, const Standard_Boolean IsElement, |
101 | TColStd_Array1OfReal& Coords, Standard_Integer& NbNodes, |
102 | MeshVS_EntityType& Type ) const |
103 | { |
104 | if( myMesh.IsNull() ) |
105 | return Standard_False; |
106 | |
107 | if( IsElement ) |
108 | { |
109 | if( ID>=1 && ID<=myElements.Extent() ) |
110 | { |
111 | Type = MeshVS_ET_Face; |
112 | NbNodes = 3; |
113 | |
114 | for( Standard_Integer i = 1, k = 1; i <= 3; i++ ) |
115 | { |
116 | Standard_Integer IdxNode = myElemNodes->Value(ID, i); |
117 | for(Standard_Integer j = 1; j <= 3; j++, k++ ) |
118 | Coords(k) = myNodeCoords->Value(IdxNode, j); |
119 | } |
120 | |
121 | return Standard_True; |
122 | } |
123 | else |
124 | return Standard_False; |
125 | } |
126 | else |
127 | if( ID>=1 && ID<=myNodes.Extent() ) |
128 | { |
129 | Type = MeshVS_ET_Node; |
130 | NbNodes = 1; |
131 | |
132 | Coords( 1 ) = myNodeCoords->Value(ID, 1); |
133 | Coords( 2 ) = myNodeCoords->Value(ID, 2); |
134 | Coords( 3 ) = myNodeCoords->Value(ID, 3); |
135 | return Standard_True; |
136 | } |
137 | else |
138 | return Standard_False; |
139 | } |
140 | |
141 | //================================================================ |
142 | // Function : GetGeomType |
143 | // Purpose : |
144 | //================================================================ |
145 | Standard_Boolean XSDRAWSTLVRML_DataSource::GetGeomType |
146 | ( const Standard_Integer, |
147 | const Standard_Boolean IsElement, |
148 | MeshVS_EntityType& Type ) const |
149 | { |
150 | if( IsElement ) |
151 | { |
152 | Type = MeshVS_ET_Face; |
153 | return Standard_True; |
154 | } |
155 | else |
156 | { |
157 | Type = MeshVS_ET_Node; |
158 | return Standard_True; |
159 | } |
160 | } |
161 | |
162 | //================================================================ |
163 | // Function : GetAddr |
164 | // Purpose : |
165 | //================================================================ |
166 | Standard_Address XSDRAWSTLVRML_DataSource::GetAddr |
167 | ( const Standard_Integer, const Standard_Boolean ) const |
168 | { |
169 | return NULL; |
170 | } |
171 | |
172 | //================================================================ |
173 | // Function : GetNodesByElement |
174 | // Purpose : |
175 | //================================================================ |
176 | Standard_Boolean XSDRAWSTLVRML_DataSource::GetNodesByElement |
177 | ( const Standard_Integer ID, |
178 | TColStd_Array1OfInteger& theNodeIDs, |
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179 | Standard_Integer& /*theNbNodes*/ ) const |
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180 | { |
181 | if( myMesh.IsNull() ) |
182 | return Standard_False; |
183 | |
184 | if( ID>=1 && ID<=myElements.Extent() && theNodeIDs.Length() >= 3 ) |
185 | { |
186 | Standard_Integer aLow = theNodeIDs.Lower(); |
187 | theNodeIDs (aLow) = myElemNodes->Value(ID, 1 ); |
188 | theNodeIDs (aLow + 1) = myElemNodes->Value(ID, 2 ); |
189 | theNodeIDs (aLow + 2) = myElemNodes->Value(ID, 3 ); |
190 | return Standard_True; |
191 | } |
192 | return Standard_False; |
193 | } |
194 | |
195 | //================================================================ |
196 | // Function : GetAllNodes |
197 | // Purpose : |
198 | //================================================================ |
199 | const TColStd_PackedMapOfInteger& XSDRAWSTLVRML_DataSource::GetAllNodes() const |
200 | { |
201 | return myNodes; |
202 | } |
203 | |
204 | //================================================================ |
205 | // Function : GetAllElements |
206 | // Purpose : |
207 | //================================================================ |
208 | const TColStd_PackedMapOfInteger& XSDRAWSTLVRML_DataSource::GetAllElements() const |
209 | { |
210 | return myElements; |
211 | } |
212 | |
213 | //================================================================ |
214 | // Function : GetNormal |
215 | // Purpose : |
216 | //================================================================ |
217 | Standard_Boolean XSDRAWSTLVRML_DataSource::GetNormal |
218 | ( const Standard_Integer Id, const Standard_Integer Max, |
219 | Standard_Real& nx, Standard_Real& ny,Standard_Real& nz ) const |
220 | { |
221 | if( myMesh.IsNull() ) |
222 | return Standard_False; |
223 | |
224 | if( Id>=1 && Id<=myElements.Extent() && Max>=3 ) |
225 | { |
226 | nx = myElemNormals->Value(Id, 1); |
227 | ny = myElemNormals->Value(Id, 2); |
228 | nz = myElemNormals->Value(Id, 3); |
229 | return Standard_True; |
230 | } |
231 | else |
232 | return Standard_False; |
233 | } |
234 | |