973c2be1 |
1 | // Created on: 1993-09-23 |
2 | // Created by: Jean-Louis FRENKEL |
3 | // Copyright (c) 1993-1999 Matra Datavision |
4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
5 | // |
6 | // This file is part of Open CASCADE Technology software library. |
7 | // |
d5f74e42 |
8 | // This library is free software; you can redistribute it and/or modify it under |
9 | // the terms of the GNU Lesser General Public License version 2.1 as published |
973c2be1 |
10 | // by the Free Software Foundation, with special exception defined in the file |
11 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
12 | // distribution for complete text of the license and disclaimer of any warranty. |
13 | // |
14 | // Alternatively, this file may be used under the terms of Open CASCADE |
15 | // commercial license or contractual agreement. |
2bd4c032 |
16 | |
17 | #include <StdPrs_ShadedShape.hxx> |
18 | |
19 | #include <Bnd_Box.hxx> |
2bd4c032 |
20 | #include <BRepTools.hxx> |
5ad8c033 |
21 | #include <BRepBndLib.hxx> |
22 | #include <BRep_Builder.hxx> |
23 | #include <BRep_Tool.hxx> |
31c0e219 |
24 | #include <Graphic3d_ArrayOfSegments.hxx> |
2bd4c032 |
25 | #include <Graphic3d_ArrayOfTriangles.hxx> |
26 | #include <Graphic3d_AspectFillArea3d.hxx> |
27 | #include <Graphic3d_Group.hxx> |
28 | #include <gp_Dir.hxx> |
29 | #include <gp_Vec.hxx> |
30 | #include <gp_Pnt.hxx> |
31c0e219 |
31 | #include <NCollection_List.hxx> |
2bd4c032 |
32 | #include <Precision.hxx> |
33 | #include <Prs3d_Drawer.hxx> |
4c513386 |
34 | #include <Prs3d_IsoAspect.hxx> |
31c0e219 |
35 | #include <Prs3d_LineAspect.hxx> |
2bd4c032 |
36 | #include <Prs3d_Presentation.hxx> |
37 | #include <Prs3d_ShadingAspect.hxx> |
38 | #include <Poly_Connect.hxx> |
31c0e219 |
39 | #include <Poly_PolygonOnTriangulation.hxx> |
2bd4c032 |
40 | #include <Poly_Triangulation.hxx> |
5ad8c033 |
41 | #include <StdPrs_ToolTriangulatedShape.hxx> |
2bd4c032 |
42 | #include <StdPrs_WFShape.hxx> |
31c0e219 |
43 | #include <TopExp.hxx> |
fc9b36d6 |
44 | #include <TopExp_Explorer.hxx> |
45 | #include <TopoDS.hxx> |
31c0e219 |
46 | #include <TopoDS_Compound.hxx> |
2bd4c032 |
47 | #include <TopoDS_Face.hxx> |
31c0e219 |
48 | #include <TopoDS_Shape.hxx> |
2bd4c032 |
49 | #include <TColgp_Array1OfDir.hxx> |
50 | #include <TColgp_Array1OfPnt2d.hxx> |
31c0e219 |
51 | #include <TColgp_HArray1OfPnt.hxx> |
a2d5ab2e |
52 | #include <TopTools_ListOfShape.hxx> |
53 | #include <TopTools_IndexedDataMapOfShapeListOfShape.hxx> |
2bd4c032 |
54 | |
55 | namespace |
56 | { |
31c0e219 |
57 | |
58 | //! Computes wireframe presentation for free wires and vertices |
59 | void wireframeFromShape (const Handle (Prs3d_Presentation)& thePrs, |
60 | const TopoDS_Shape& theShape, |
61 | const Handle (Prs3d_Drawer)& theDrawer) |
62 | { |
b6826918 |
63 | TopExp_Explorer aShapeIter (theShape, TopAbs_FACE); |
64 | if (!aShapeIter.More()) |
31c0e219 |
65 | { |
b6826918 |
66 | StdPrs_WFShape::Add (thePrs, theShape, theDrawer); |
31c0e219 |
67 | return; |
68 | } |
69 | |
b6826918 |
70 | const Standard_Boolean aDrawAllVerticesFlag = (theDrawer->VertexDrawMode() == Prs3d_VDM_All); |
71 | if (!aDrawAllVerticesFlag && theShape.ShapeType() != TopAbs_COMPOUND) |
31c0e219 |
72 | { |
31c0e219 |
73 | return; |
74 | } |
75 | |
53b15292 |
76 | // We have to create a compound and collect all subshapes not drawn by the shading algo. |
77 | // This includes: |
78 | // - isolated edges |
79 | // - isolated vertices, if aDrawAllVerticesFlag == Standard_False |
80 | // - all shape's vertices, if aDrawAllVerticesFlag == Standard_True |
31c0e219 |
81 | TopoDS_Compound aCompoundWF; |
82 | BRep_Builder aBuilder; |
83 | aBuilder.MakeCompound (aCompoundWF); |
84 | Standard_Boolean hasElement = Standard_False; |
85 | |
86 | // isolated edges |
87 | for (aShapeIter.Init (theShape, TopAbs_EDGE, TopAbs_FACE); aShapeIter.More(); aShapeIter.Next()) |
88 | { |
89 | hasElement = Standard_True; |
90 | aBuilder.Add (aCompoundWF, aShapeIter.Current()); |
91 | } |
53b15292 |
92 | // isolated or all vertices |
93 | aShapeIter.Init (theShape, TopAbs_VERTEX, aDrawAllVerticesFlag ? TopAbs_SHAPE : TopAbs_EDGE); |
94 | for (; aShapeIter.More(); aShapeIter.Next()) |
31c0e219 |
95 | { |
96 | hasElement = Standard_True; |
97 | aBuilder.Add (aCompoundWF, aShapeIter.Current()); |
98 | } |
99 | if (hasElement) |
100 | { |
5ad8c033 |
101 | StdPrs_WFShape::Add (thePrs, aCompoundWF, theDrawer); |
31c0e219 |
102 | } |
103 | } |
104 | |
4c513386 |
105 | //! Computes special wireframe presentation for faces without triangulation. |
106 | void wireframeNoTriangFacesFromShape (const Handle(Prs3d_Presentation)& thePrs, |
107 | const TopoDS_Shape& theShape, |
108 | const Handle(Prs3d_Drawer)& theDrawer) |
109 | { |
110 | TopoDS_Compound aCompoundWF; |
111 | BRep_Builder aBuilder; |
112 | aBuilder.MakeCompound (aCompoundWF); |
113 | TopLoc_Location aLoc; |
114 | Standard_Boolean hasElement = Standard_False; |
115 | |
116 | for (TopExp_Explorer aShapeIter(theShape, TopAbs_FACE); aShapeIter.More(); aShapeIter.Next()) |
117 | { |
118 | const TopoDS_Face& aFace = TopoDS::Face (aShapeIter.Current()); |
119 | const Handle(Poly_Triangulation) aTriang = BRep_Tool::Triangulation (aFace, aLoc); |
120 | if (aTriang.IsNull()) |
121 | { |
122 | hasElement = Standard_True; |
123 | aBuilder.Add (aCompoundWF, aFace); |
124 | } |
125 | } |
126 | |
127 | if (hasElement) |
128 | { |
129 | Standard_Integer aPrevUIsoNb = theDrawer->UIsoAspect()->Number(); |
130 | Standard_Integer aPrevVIsoNb = theDrawer->VIsoAspect()->Number(); |
131 | theDrawer->UIsoAspect()->SetNumber (5); |
132 | theDrawer->VIsoAspect()->SetNumber (5); |
133 | |
5ad8c033 |
134 | StdPrs_WFShape::Add (thePrs, aCompoundWF, theDrawer); |
4c513386 |
135 | |
136 | theDrawer->UIsoAspect()->SetNumber (aPrevUIsoNb); |
137 | theDrawer->VIsoAspect()->SetNumber (aPrevVIsoNb); |
138 | } |
139 | } |
140 | |
31c0e219 |
141 | //! Gets triangulation of every face of shape and fills output array of triangles |
142 | static Handle(Graphic3d_ArrayOfTriangles) fillTriangles (const TopoDS_Shape& theShape, |
143 | const Standard_Boolean theHasTexels, |
144 | const gp_Pnt2d& theUVOrigin, |
145 | const gp_Pnt2d& theUVRepeat, |
146 | const gp_Pnt2d& theUVScale) |
2bd4c032 |
147 | { |
31c0e219 |
148 | Handle(Poly_Triangulation) aT; |
2bd4c032 |
149 | TopLoc_Location aLoc; |
31c0e219 |
150 | gp_Pnt aPoint; |
151 | Standard_Integer aNbTriangles = 0; |
152 | Standard_Integer aNbVertices = 0; |
2bd4c032 |
153 | |
31c0e219 |
154 | // Precision for compare square distances |
3b1817a9 |
155 | const Standard_Real aPreci = Precision::SquareConfusion(); |
2bd4c032 |
156 | |
fc9b36d6 |
157 | TopExp_Explorer aFaceIt(theShape, TopAbs_FACE); |
158 | for (; aFaceIt.More(); aFaceIt.Next()) |
2bd4c032 |
159 | { |
fc9b36d6 |
160 | const TopoDS_Face& aFace = TopoDS::Face(aFaceIt.Current()); |
5ad8c033 |
161 | aT = BRep_Tool::Triangulation (aFace, aLoc); |
31c0e219 |
162 | if (!aT.IsNull()) |
2bd4c032 |
163 | { |
31c0e219 |
164 | aNbTriangles += aT->NbTriangles(); |
165 | aNbVertices += aT->NbNodes(); |
2bd4c032 |
166 | } |
2bd4c032 |
167 | } |
31c0e219 |
168 | if (aNbVertices < 3 || aNbTriangles <= 0) |
2bd4c032 |
169 | { |
31c0e219 |
170 | return Handle(Graphic3d_ArrayOfTriangles)(); |
3b1817a9 |
171 | } |
2bd4c032 |
172 | |
31c0e219 |
173 | Handle(Graphic3d_ArrayOfTriangles) anArray = new Graphic3d_ArrayOfTriangles (aNbVertices, 3 * aNbTriangles, |
871fa103 |
174 | Standard_True, Standard_False, theHasTexels); |
31c0e219 |
175 | Standard_Real aUmin (0.0), aUmax (0.0), aVmin (0.0), aVmax (0.0), dUmax (0.0), dVmax (0.0); |
fc9b36d6 |
176 | for (aFaceIt.Init (theShape, TopAbs_FACE); aFaceIt.More(); aFaceIt.Next()) |
2bd4c032 |
177 | { |
fc9b36d6 |
178 | const TopoDS_Face& aFace = TopoDS::Face(aFaceIt.Current()); |
5ad8c033 |
179 | aT = BRep_Tool::Triangulation (aFace, aLoc); |
31c0e219 |
180 | if (aT.IsNull()) |
3b1817a9 |
181 | { |
182 | continue; |
183 | } |
184 | const gp_Trsf& aTrsf = aLoc.Transformation(); |
7d9e854b |
185 | |
186 | // Determinant of transform matrix less then 0 means that mirror transform applied. |
187 | Standard_Boolean isMirrored = aTrsf.VectorialPart().Determinant() < 0; |
188 | |
31c0e219 |
189 | Poly_Connect aPolyConnect (aT); |
3b1817a9 |
190 | // Extracts vertices & normals from nodes |
31c0e219 |
191 | const TColgp_Array1OfPnt& aNodes = aT->Nodes(); |
192 | const TColgp_Array1OfPnt2d& aUVNodes = aT->UVNodes(); |
f4064435 |
193 | StdPrs_ToolTriangulatedShape::Normal (aFace, aPolyConnect); |
194 | const TShort_Array1OfShortReal& aNormals = aT->Normals(); |
195 | const Standard_ShortReal* aNormArr = &aNormals.First(); |
3b1817a9 |
196 | |
197 | if (theHasTexels) |
2bd4c032 |
198 | { |
3b1817a9 |
199 | BRepTools::UVBounds (aFace, aUmin, aUmax, aVmin, aVmax); |
200 | dUmax = (aUmax - aUmin); |
201 | dVmax = (aVmax - aVmin); |
202 | } |
203 | |
31c0e219 |
204 | const Standard_Integer aDecal = anArray->VertexNumber(); |
3b1817a9 |
205 | for (Standard_Integer aNodeIter = aNodes.Lower(); aNodeIter <= aNodes.Upper(); ++aNodeIter) |
206 | { |
31c0e219 |
207 | aPoint = aNodes (aNodeIter); |
f4064435 |
208 | const Standard_Integer anId = 3 * (aNodeIter - aNodes.Lower()); |
209 | gp_Dir aNorm (aNormArr[anId + 0], aNormArr[anId + 1], aNormArr[anId + 2]); |
210 | if (aFace.Orientation() == TopAbs_REVERSED) |
211 | { |
212 | aNorm.Reverse(); |
213 | } |
3b1817a9 |
214 | if (!aLoc.IsIdentity()) |
2bd4c032 |
215 | { |
31c0e219 |
216 | aPoint.Transform (aTrsf); |
f4064435 |
217 | aNorm.Transform (aTrsf); |
2bd4c032 |
218 | } |
3b1817a9 |
219 | |
220 | if (theHasTexels && aUVNodes.Upper() == aNodes.Upper()) |
2bd4c032 |
221 | { |
3b1817a9 |
222 | const gp_Pnt2d aTexel = gp_Pnt2d ((-theUVOrigin.X() + (theUVRepeat.X() * (aUVNodes (aNodeIter).X() - aUmin)) / dUmax) / theUVScale.X(), |
223 | (-theUVOrigin.Y() + (theUVRepeat.Y() * (aUVNodes (aNodeIter).Y() - aVmin)) / dVmax) / theUVScale.Y()); |
f4064435 |
224 | anArray->AddVertex (aPoint, aNorm, aTexel); |
2bd4c032 |
225 | } |
3b1817a9 |
226 | else |
2bd4c032 |
227 | { |
f4064435 |
228 | anArray->AddVertex (aPoint, aNorm); |
2bd4c032 |
229 | } |
3b1817a9 |
230 | } |
2bd4c032 |
231 | |
3b1817a9 |
232 | // Fill array with vertex and edge visibility info |
31c0e219 |
233 | const Poly_Array1OfTriangle& aTriangles = aT->Triangles(); |
234 | Standard_Integer anIndex[3]; |
235 | for (Standard_Integer aTriIter = 1; aTriIter <= aT->NbTriangles(); ++aTriIter) |
3b1817a9 |
236 | { |
7d9e854b |
237 | if ((aFace.Orientation() == TopAbs_REVERSED) ^ isMirrored) |
31c0e219 |
238 | { |
239 | aTriangles (aTriIter).Get (anIndex[0], anIndex[2], anIndex[1]); |
240 | } |
3b1817a9 |
241 | else |
31c0e219 |
242 | { |
243 | aTriangles (aTriIter).Get (anIndex[0], anIndex[1], anIndex[2]); |
244 | } |
3b1817a9 |
245 | |
31c0e219 |
246 | gp_Pnt aP1 = aNodes (anIndex[0]); |
247 | gp_Pnt aP2 = aNodes (anIndex[1]); |
248 | gp_Pnt aP3 = aNodes (anIndex[2]); |
3b1817a9 |
249 | |
31c0e219 |
250 | gp_Vec aV1 (aP1, aP2); |
251 | if (aV1.SquareMagnitude() <= aPreci) |
3b1817a9 |
252 | { |
253 | continue; |
254 | } |
31c0e219 |
255 | gp_Vec aV2 (aP2, aP3); |
256 | if (aV2.SquareMagnitude() <= aPreci) |
3b1817a9 |
257 | { |
258 | continue; |
259 | } |
31c0e219 |
260 | gp_Vec aV3 (aP3, aP1); |
261 | if (aV3.SquareMagnitude() <= aPreci) |
3b1817a9 |
262 | { |
263 | continue; |
264 | } |
31c0e219 |
265 | aV1.Normalize(); |
266 | aV2.Normalize(); |
267 | aV1.Cross (aV2); |
268 | if (aV1.SquareMagnitude() > aPreci) |
2bd4c032 |
269 | { |
31c0e219 |
270 | anArray->AddEdge (anIndex[0] + aDecal); |
271 | anArray->AddEdge (anIndex[1] + aDecal); |
272 | anArray->AddEdge (anIndex[2] + aDecal); |
2bd4c032 |
273 | } |
274 | } |
2bd4c032 |
275 | } |
31c0e219 |
276 | return anArray; |
277 | } |
278 | |
31c0e219 |
279 | //! Prepare shaded presentation for specified shape |
280 | static Standard_Boolean shadeFromShape (const TopoDS_Shape& theShape, |
281 | const Handle(Prs3d_Presentation)& thePrs, |
282 | const Handle(Prs3d_Drawer)& theDrawer, |
283 | const Standard_Boolean theHasTexels, |
284 | const gp_Pnt2d& theUVOrigin, |
285 | const gp_Pnt2d& theUVRepeat, |
286 | const gp_Pnt2d& theUVScale, |
b6472664 |
287 | const bool theIsClosed) |
31c0e219 |
288 | { |
289 | Handle(Graphic3d_ArrayOfTriangles) aPArray = fillTriangles (theShape, theHasTexels, theUVOrigin, theUVRepeat, theUVScale); |
290 | if (aPArray.IsNull()) |
291 | { |
292 | return Standard_False; |
293 | } |
3b1817a9 |
294 | |
31c0e219 |
295 | Handle(Graphic3d_Group) aGroup = Prs3d_Root::NewGroup (thePrs); |
296 | aGroup->SetClosed (theIsClosed); |
6887652a |
297 | aGroup->SetGroupPrimitivesAspect (theDrawer->ShadingAspect()->Aspect()); |
31c0e219 |
298 | aGroup->AddPrimitiveArray (aPArray); |
2bd4c032 |
299 | return Standard_True; |
300 | } |
a2d5ab2e |
301 | |
31c0e219 |
302 | //! Compute boundary presentation for faces of the shape. |
9c86076b |
303 | static Handle(Graphic3d_ArrayOfSegments) fillFaceBoundaries (const TopoDS_Shape& theShape) |
a2d5ab2e |
304 | { |
305 | // collection of all triangulation nodes on edges |
306 | // for computing boundaries presentation |
a2d5ab2e |
307 | Standard_Integer aNodeNumber = 0; |
1b9f5d95 |
308 | Standard_Integer aNbPolylines = 0; |
a2d5ab2e |
309 | |
310 | TopLoc_Location aTrsf; |
0a863061 |
311 | TColgp_SequenceOfPnt aSeqPntsExtra; |
312 | for (TopExp_Explorer aFaceIter (theShape, TopAbs_FACE); aFaceIter.More(); aFaceIter.Next()) |
313 | { |
314 | const TopoDS_Face& aFace = TopoDS::Face (aFaceIter.Current()); |
315 | TopoDS_Iterator aSubShapeIter (aFace); |
316 | if (!aSubShapeIter.More()) |
317 | { |
318 | // handle specifically faces without boundary definition (triangulation-only) |
319 | StdPrs_WFShape::AddEdgesOnTriangulation (aSeqPntsExtra, aFace, Standard_False); |
320 | } |
321 | } |
a2d5ab2e |
322 | |
323 | // explore all boundary edges |
324 | TopTools_IndexedDataMapOfShapeListOfShape anEdgesMap; |
1b9f5d95 |
325 | TopExp::MapShapesAndAncestors (theShape, TopAbs_EDGE, TopAbs_FACE, anEdgesMap); |
326 | for (TopTools_IndexedDataMapOfShapeListOfShape::Iterator anEdgeIter (anEdgesMap); anEdgeIter.More(); anEdgeIter.Next()) |
a2d5ab2e |
327 | { |
328 | // reject free edges |
1b9f5d95 |
329 | if (anEdgeIter.Value().Extent() == 0) |
330 | { |
a2d5ab2e |
331 | continue; |
1b9f5d95 |
332 | } |
a2d5ab2e |
333 | |
334 | // take one of the shared edges and get edge triangulation |
1b9f5d95 |
335 | const TopoDS_Face& aFace = TopoDS::Face (anEdgeIter.Value().First()); |
336 | Handle(Poly_Triangulation) aTriangulation = BRep_Tool::Triangulation (aFace, aTrsf); |
337 | if (aTriangulation.IsNull()) |
338 | { |
339 | continue; |
340 | } |
a2d5ab2e |
341 | |
1b9f5d95 |
342 | const TopoDS_Edge& anEdge = TopoDS::Edge (anEdgeIter.Key()); |
343 | Handle(Poly_PolygonOnTriangulation) anEdgePoly = BRep_Tool::PolygonOnTriangulation (anEdge, aTriangulation, aTrsf); |
344 | if (!anEdgePoly.IsNull() |
345 | && anEdgePoly->Nodes().Length() >= 2) |
346 | { |
347 | aNodeNumber += anEdgePoly->Nodes().Length(); |
348 | ++aNbPolylines; |
349 | } |
350 | } |
351 | if (aNodeNumber == 0) |
352 | { |
0a863061 |
353 | if (aSeqPntsExtra.Size() < 2) |
354 | { |
355 | return Handle(Graphic3d_ArrayOfSegments)(); |
356 | } |
357 | |
358 | Standard_Integer aNbVertices = aSeqPntsExtra.Size(); |
359 | Handle(Graphic3d_ArrayOfSegments) aSegments = new Graphic3d_ArrayOfSegments (aNbVertices); |
360 | for (Standard_Integer aPntIter = 1; aPntIter <= aNbVertices; aPntIter += 2) |
361 | { |
362 | aSegments->AddVertex (aSeqPntsExtra.Value (aPntIter)); |
363 | aSegments->AddVertex (aSeqPntsExtra.Value (aPntIter + 1)); |
364 | } |
365 | return aSegments; |
1b9f5d95 |
366 | } |
a2d5ab2e |
367 | |
1b9f5d95 |
368 | // create indexed segments array to pack polylines from different edges into single array |
369 | const Standard_Integer aSegmentEdgeNb = (aNodeNumber - aNbPolylines) * 2; |
0a863061 |
370 | Handle(Graphic3d_ArrayOfSegments) aSegments = new Graphic3d_ArrayOfSegments (aNodeNumber + aSeqPntsExtra.Size(), aSegmentEdgeNb + aSeqPntsExtra.Size()); |
1b9f5d95 |
371 | for (TopTools_IndexedDataMapOfShapeListOfShape::Iterator anEdgeIter (anEdgesMap); anEdgeIter.More(); anEdgeIter.Next()) |
372 | { |
373 | if (anEdgeIter.Value().Extent() == 0) |
374 | { |
a2d5ab2e |
375 | continue; |
1b9f5d95 |
376 | } |
a2d5ab2e |
377 | |
1b9f5d95 |
378 | const TopoDS_Face& aFace = TopoDS::Face (anEdgeIter.Value().First()); |
379 | Handle(Poly_Triangulation) aTriangulation = BRep_Tool::Triangulation (aFace, aTrsf); |
380 | if (aTriangulation.IsNull()) |
381 | { |
382 | continue; |
383 | } |
a2d5ab2e |
384 | |
1b9f5d95 |
385 | const TopoDS_Edge& anEdge = TopoDS::Edge (anEdgeIter.Key()); |
386 | Handle(Poly_PolygonOnTriangulation) anEdgePoly = BRep_Tool::PolygonOnTriangulation (anEdge, aTriangulation, aTrsf); |
387 | if (anEdgePoly.IsNull() |
388 | || anEdgePoly->Nodes().Length () < 2) |
389 | { |
a2d5ab2e |
390 | continue; |
1b9f5d95 |
391 | } |
a2d5ab2e |
392 | |
393 | // get edge nodes indexes from face triangulation |
1b9f5d95 |
394 | const TColgp_Array1OfPnt& aTriNodes = aTriangulation->Nodes(); |
395 | const TColStd_Array1OfInteger& anEdgeNodes = anEdgePoly->Nodes(); |
a2d5ab2e |
396 | |
397 | // collect the edge nodes |
1b9f5d95 |
398 | Standard_Integer aSegmentEdge = aSegments->VertexNumber() + 1; |
399 | for (Standard_Integer aNodeIdx = anEdgeNodes.Lower(); aNodeIdx <= anEdgeNodes.Upper(); ++aNodeIdx) |
a2d5ab2e |
400 | { |
401 | // node index in face triangulation |
a2d5ab2e |
402 | // get node and apply location transformation to the node |
1b9f5d95 |
403 | const Standard_Integer aTriIndex = anEdgeNodes.Value (aNodeIdx); |
a2d5ab2e |
404 | gp_Pnt aTriNode = aTriNodes.Value (aTriIndex); |
1b9f5d95 |
405 | if (!aTrsf.IsIdentity()) |
406 | { |
a2d5ab2e |
407 | aTriNode.Transform (aTrsf); |
1b9f5d95 |
408 | } |
a2d5ab2e |
409 | |
1b9f5d95 |
410 | aSegments->AddVertex (aTriNode); |
411 | if (aNodeIdx != anEdgeNodes.Lower()) |
412 | { |
413 | aSegments->AddEdge ( aSegmentEdge); |
414 | aSegments->AddEdge (++aSegmentEdge); |
415 | } |
a2d5ab2e |
416 | } |
417 | } |
0a863061 |
418 | |
419 | { |
420 | Standard_Integer aSegmentEdge = aSegments->VertexNumber(); |
421 | const Standard_Integer aNbVertices = aSeqPntsExtra.Size(); |
422 | for (Standard_Integer aPntIter = 1; aPntIter <= aNbVertices; aPntIter += 2) |
423 | { |
424 | aSegments->AddVertex (aSeqPntsExtra.Value (aPntIter)); |
425 | aSegments->AddEdge (++aSegmentEdge); |
426 | aSegments->AddVertex (aSeqPntsExtra.Value (aPntIter + 1)); |
427 | aSegments->AddEdge (++aSegmentEdge); |
428 | } |
429 | } |
430 | |
9c86076b |
431 | return aSegments; |
a2d5ab2e |
432 | } |
68858c7d |
433 | |
434 | } // anonymous namespace |
2bd4c032 |
435 | |
5bffb882 |
436 | // ======================================================================= |
437 | // function : ExploreSolids |
438 | // purpose : |
439 | // ======================================================================= |
440 | void StdPrs_ShadedShape::ExploreSolids (const TopoDS_Shape& theShape, |
441 | const BRep_Builder& theBuilder, |
442 | TopoDS_Compound& theClosed, |
443 | TopoDS_Compound& theOpened, |
444 | const Standard_Boolean theIgnore1DSubShape) |
445 | { |
446 | if (theShape.IsNull()) |
447 | { |
448 | return; |
449 | } |
450 | |
451 | switch (theShape.ShapeType()) |
452 | { |
453 | case TopAbs_COMPOUND: |
454 | case TopAbs_COMPSOLID: |
455 | { |
456 | for (TopoDS_Iterator anIter (theShape); anIter.More(); anIter.Next()) |
457 | { |
458 | ExploreSolids (anIter.Value(), theBuilder, theClosed, theOpened, theIgnore1DSubShape); |
459 | } |
460 | return; |
461 | } |
462 | case TopAbs_SOLID: |
463 | { |
464 | for (TopoDS_Iterator anIter (theShape); anIter.More(); anIter.Next()) |
465 | { |
466 | const TopoDS_Shape& aSubShape = anIter.Value(); |
467 | const Standard_Boolean isClosed = aSubShape.ShapeType() == TopAbs_SHELL && |
468 | BRep_Tool::IsClosed (aSubShape) && |
5ad8c033 |
469 | StdPrs_ToolTriangulatedShape::IsTriangulated (aSubShape); |
5bffb882 |
470 | theBuilder.Add (isClosed ? theClosed : theOpened, aSubShape); |
471 | } |
472 | return; |
473 | } |
474 | case TopAbs_SHELL: |
475 | case TopAbs_FACE: |
476 | { |
477 | theBuilder.Add (theOpened, theShape); |
478 | return; |
479 | } |
480 | case TopAbs_WIRE: |
481 | case TopAbs_EDGE: |
482 | case TopAbs_VERTEX: |
483 | { |
484 | if (!theIgnore1DSubShape) |
485 | { |
486 | theBuilder.Add (theOpened, theShape); |
487 | } |
488 | return; |
489 | } |
490 | case TopAbs_SHAPE: |
491 | default: |
492 | return; |
493 | } |
494 | } |
495 | |
2bd4c032 |
496 | // ======================================================================= |
497 | // function : Add |
498 | // purpose : |
499 | // ======================================================================= |
31c0e219 |
500 | void StdPrs_ShadedShape::Add (const Handle(Prs3d_Presentation)& thePrs, |
501 | const TopoDS_Shape& theShape, |
502 | const Handle(Prs3d_Drawer)& theDrawer, |
5bffb882 |
503 | const StdPrs_Volume theVolume) |
2bd4c032 |
504 | { |
505 | gp_Pnt2d aDummy; |
31c0e219 |
506 | StdPrs_ShadedShape::Add (thePrs, theShape, theDrawer, |
5bffb882 |
507 | Standard_False, aDummy, aDummy, aDummy, theVolume); |
2bd4c032 |
508 | } |
509 | |
510 | // ======================================================================= |
511 | // function : Add |
512 | // purpose : |
513 | // ======================================================================= |
31c0e219 |
514 | void StdPrs_ShadedShape::Add (const Handle (Prs3d_Presentation)& thePrs, |
2bd4c032 |
515 | const TopoDS_Shape& theShape, |
516 | const Handle (Prs3d_Drawer)& theDrawer, |
517 | const Standard_Boolean theHasTexels, |
518 | const gp_Pnt2d& theUVOrigin, |
519 | const gp_Pnt2d& theUVRepeat, |
31c0e219 |
520 | const gp_Pnt2d& theUVScale, |
5bffb882 |
521 | const StdPrs_Volume theVolume) |
2bd4c032 |
522 | { |
523 | if (theShape.IsNull()) |
524 | { |
525 | return; |
526 | } |
527 | |
31c0e219 |
528 | // add wireframe presentation for isolated edges and vertices |
529 | wireframeFromShape (thePrs, theShape, theDrawer); |
530 | |
4c513386 |
531 | // Use automatic re-triangulation with deflection-check logic only if this feature is enable |
532 | if (theDrawer->IsAutoTriangulation()) |
533 | { |
534 | // Triangulation completeness is important for "open-closed" analysis - perform tessellation beforehand |
5ad8c033 |
535 | StdPrs_ToolTriangulatedShape::Tessellate (theShape, theDrawer); |
4c513386 |
536 | } |
537 | |
538 | // add special wireframe presentation for faces without triangulation |
539 | wireframeNoTriangFacesFromShape (thePrs, theShape, theDrawer); |
4769a395 |
540 | |
541 | // The shape types listed below need advanced analysis as potentially containing |
542 | // both closed and open parts. Solids are also included, because they might |
543 | // contain non-manifold parts inside (internal open shells) |
31c0e219 |
544 | if ((theShape.ShapeType() == TopAbs_COMPOUND |
4769a395 |
545 | || theShape.ShapeType() == TopAbs_COMPSOLID |
546 | || theShape.ShapeType() == TopAbs_SOLID) |
5bffb882 |
547 | && theVolume == StdPrs_Volume_Autodetection) |
2bd4c032 |
548 | { |
31c0e219 |
549 | // collect two compounds: for opened and closed (solid) sub-shapes |
550 | TopoDS_Compound anOpened, aClosed; |
551 | BRep_Builder aBuilder; |
552 | aBuilder.MakeCompound (aClosed); |
553 | aBuilder.MakeCompound (anOpened); |
5bffb882 |
554 | ExploreSolids (theShape, aBuilder, aClosed, anOpened, Standard_True); |
31c0e219 |
555 | |
556 | TopoDS_Iterator aShapeIter (aClosed); |
557 | if (aShapeIter.More()) |
2bd4c032 |
558 | { |
31c0e219 |
559 | shadeFromShape (aClosed, thePrs, theDrawer, |
b6472664 |
560 | theHasTexels, theUVOrigin, theUVRepeat, theUVScale, true); |
2bd4c032 |
561 | } |
31c0e219 |
562 | |
563 | aShapeIter.Initialize (anOpened); |
564 | if (aShapeIter.More()) |
2bd4c032 |
565 | { |
31c0e219 |
566 | shadeFromShape (anOpened, thePrs, theDrawer, |
b6472664 |
567 | theHasTexels, theUVOrigin, theUVRepeat, theUVScale, false); |
2bd4c032 |
568 | } |
569 | } |
31c0e219 |
570 | else |
571 | { |
5bffb882 |
572 | // if the shape type is not compound, composolid or solid, use autodetection back-facing filled |
31c0e219 |
573 | shadeFromShape (theShape, thePrs, theDrawer, |
4769a395 |
574 | theHasTexels, theUVOrigin, theUVRepeat, theUVScale, |
b6472664 |
575 | theVolume == StdPrs_Volume_Closed); |
31c0e219 |
576 | } |
2bd4c032 |
577 | |
6262338c |
578 | if (theDrawer->FaceBoundaryDraw()) |
a2d5ab2e |
579 | { |
9c86076b |
580 | Handle(Graphic3d_ArrayOfSegments) aBndSegments = fillFaceBoundaries (theShape); |
581 | if (!aBndSegments.IsNull()) |
582 | { |
583 | Handle(Graphic3d_AspectLine3d) aBoundaryAspect = theDrawer->FaceBoundaryAspect()->Aspect(); |
584 | Handle(Graphic3d_Group) aPrsGrp = Prs3d_Root::CurrentGroup (thePrs); |
585 | aPrsGrp->SetGroupPrimitivesAspect (aBoundaryAspect); |
586 | aPrsGrp->AddPrimitiveArray (aBndSegments); |
587 | } |
a2d5ab2e |
588 | } |
589 | } |
9c86076b |
590 | |
591 | // ======================================================================= |
592 | // function : FillTriangles |
593 | // purpose : |
594 | // ======================================================================= |
595 | Handle(Graphic3d_ArrayOfTriangles) StdPrs_ShadedShape::FillTriangles (const TopoDS_Shape& theShape, |
596 | const Standard_Boolean theHasTexels, |
597 | const gp_Pnt2d& theUVOrigin, |
598 | const gp_Pnt2d& theUVRepeat, |
599 | const gp_Pnt2d& theUVScale) |
600 | { |
601 | return fillTriangles (theShape, theHasTexels, theUVOrigin, theUVRepeat, theUVScale); |
602 | } |
603 | |
604 | // ======================================================================= |
605 | // function : FillFaceBoundaries |
606 | // purpose : |
607 | // ======================================================================= |
608 | Handle(Graphic3d_ArrayOfSegments) StdPrs_ShadedShape::FillFaceBoundaries (const TopoDS_Shape& theShape) |
609 | { |
610 | return fillFaceBoundaries (theShape); |
611 | } |
612 | |
613 | // ======================================================================= |
614 | // function : AddWireframeForFreeElements |
615 | // purpose : |
616 | // ======================================================================= |
617 | void StdPrs_ShadedShape::AddWireframeForFreeElements (const Handle (Prs3d_Presentation)& thePrs, |
618 | const TopoDS_Shape& theShape, |
619 | const Handle (Prs3d_Drawer)& theDrawer) |
620 | { |
621 | wireframeFromShape (thePrs, theShape, theDrawer); |
622 | } |
623 | |
624 | // ======================================================================= |
625 | // function : AddWireframeForFacesWithoutTriangles |
626 | // purpose : |
627 | // ======================================================================= |
628 | void StdPrs_ShadedShape::AddWireframeForFacesWithoutTriangles (const Handle(Prs3d_Presentation)& thePrs, |
629 | const TopoDS_Shape& theShape, |
630 | const Handle(Prs3d_Drawer)& theDrawer) |
631 | { |
632 | wireframeNoTriangFacesFromShape (thePrs, theShape, theDrawer); |
633 | } |