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> |
20 | #include <BRep_Builder.hxx> |
21 | #include <BRepBndLib.hxx> |
22 | #include <BRepMesh_DiscretFactory.hxx> |
23 | #include <BRepMesh_DiscretRoot.hxx> |
24 | #include <BRepTools.hxx> |
31c0e219 |
25 | #include <Graphic3d_ArrayOfSegments.hxx> |
2bd4c032 |
26 | #include <Graphic3d_ArrayOfTriangles.hxx> |
27 | #include <Graphic3d_AspectFillArea3d.hxx> |
28 | #include <Graphic3d_Group.hxx> |
29 | #include <gp_Dir.hxx> |
30 | #include <gp_Vec.hxx> |
31 | #include <gp_Pnt.hxx> |
31c0e219 |
32 | #include <NCollection_List.hxx> |
2bd4c032 |
33 | #include <Precision.hxx> |
9dba391d |
34 | #include <Prs3d.hxx> |
2bd4c032 |
35 | #include <Prs3d_Drawer.hxx> |
31c0e219 |
36 | #include <Prs3d_LineAspect.hxx> |
2bd4c032 |
37 | #include <Prs3d_Presentation.hxx> |
38 | #include <Prs3d_ShadingAspect.hxx> |
39 | #include <Poly_Connect.hxx> |
31c0e219 |
40 | #include <Poly_PolygonOnTriangulation.hxx> |
2bd4c032 |
41 | #include <Poly_Triangulation.hxx> |
42 | #include <StdPrs_ToolShadedShape.hxx> |
43 | #include <StdPrs_WFShape.hxx> |
31c0e219 |
44 | #include <TopExp.hxx> |
fc9b36d6 |
45 | #include <TopExp_Explorer.hxx> |
46 | #include <TopoDS.hxx> |
31c0e219 |
47 | #include <TopoDS_Compound.hxx> |
2bd4c032 |
48 | #include <TopoDS_Face.hxx> |
31c0e219 |
49 | #include <TopoDS_Shape.hxx> |
2bd4c032 |
50 | #include <TColgp_Array1OfDir.hxx> |
51 | #include <TColgp_Array1OfPnt2d.hxx> |
31c0e219 |
52 | #include <TColgp_HArray1OfPnt.hxx> |
a2d5ab2e |
53 | #include <TopTools_ListOfShape.hxx> |
54 | #include <TopTools_IndexedDataMapOfShapeListOfShape.hxx> |
2bd4c032 |
55 | |
56 | namespace |
57 | { |
31c0e219 |
58 | |
59 | //! Computes wireframe presentation for free wires and vertices |
60 | void wireframeFromShape (const Handle (Prs3d_Presentation)& thePrs, |
61 | const TopoDS_Shape& theShape, |
62 | const Handle (Prs3d_Drawer)& theDrawer) |
63 | { |
64 | if (theShape.ShapeType() != TopAbs_COMPOUND) |
65 | { |
66 | return; |
67 | } |
68 | |
69 | TopExp_Explorer aShapeIter (theShape, TopAbs_FACE); |
70 | if (!aShapeIter.More()) |
71 | { |
72 | // compound contains no shaded elements at all |
73 | StdPrs_WFShape::Add (thePrs, theShape, theDrawer); |
74 | return; |
75 | } |
76 | |
77 | TopoDS_Compound aCompoundWF; |
78 | BRep_Builder aBuilder; |
79 | aBuilder.MakeCompound (aCompoundWF); |
80 | Standard_Boolean hasElement = Standard_False; |
81 | |
82 | // isolated edges |
83 | for (aShapeIter.Init (theShape, TopAbs_EDGE, TopAbs_FACE); aShapeIter.More(); aShapeIter.Next()) |
84 | { |
85 | hasElement = Standard_True; |
86 | aBuilder.Add (aCompoundWF, aShapeIter.Current()); |
87 | } |
88 | // isolated vertices |
89 | for (aShapeIter.Init (theShape, TopAbs_VERTEX, TopAbs_EDGE); aShapeIter.More(); aShapeIter.Next()) |
90 | { |
91 | hasElement = Standard_True; |
92 | aBuilder.Add (aCompoundWF, aShapeIter.Current()); |
93 | } |
94 | if (hasElement) |
95 | { |
96 | StdPrs_WFShape::Add (thePrs, aCompoundWF, theDrawer); |
97 | } |
98 | } |
99 | |
31c0e219 |
100 | //! Gets triangulation of every face of shape and fills output array of triangles |
101 | static Handle(Graphic3d_ArrayOfTriangles) fillTriangles (const TopoDS_Shape& theShape, |
102 | const Standard_Boolean theHasTexels, |
103 | const gp_Pnt2d& theUVOrigin, |
104 | const gp_Pnt2d& theUVRepeat, |
105 | const gp_Pnt2d& theUVScale) |
2bd4c032 |
106 | { |
31c0e219 |
107 | Handle(Poly_Triangulation) aT; |
2bd4c032 |
108 | TopLoc_Location aLoc; |
31c0e219 |
109 | gp_Pnt aPoint; |
110 | Standard_Integer aNbTriangles = 0; |
111 | Standard_Integer aNbVertices = 0; |
2bd4c032 |
112 | |
31c0e219 |
113 | // Precision for compare square distances |
3b1817a9 |
114 | const Standard_Real aPreci = Precision::SquareConfusion(); |
2bd4c032 |
115 | |
fc9b36d6 |
116 | TopExp_Explorer aFaceIt(theShape, TopAbs_FACE); |
117 | for (; aFaceIt.More(); aFaceIt.Next()) |
2bd4c032 |
118 | { |
fc9b36d6 |
119 | const TopoDS_Face& aFace = TopoDS::Face(aFaceIt.Current()); |
120 | aT = StdPrs_ToolShadedShape::Triangulation (aFace, aLoc); |
31c0e219 |
121 | if (!aT.IsNull()) |
2bd4c032 |
122 | { |
31c0e219 |
123 | aNbTriangles += aT->NbTriangles(); |
124 | aNbVertices += aT->NbNodes(); |
2bd4c032 |
125 | } |
2bd4c032 |
126 | } |
31c0e219 |
127 | if (aNbVertices < 3 || aNbTriangles <= 0) |
2bd4c032 |
128 | { |
31c0e219 |
129 | return Handle(Graphic3d_ArrayOfTriangles)(); |
3b1817a9 |
130 | } |
2bd4c032 |
131 | |
31c0e219 |
132 | Handle(Graphic3d_ArrayOfTriangles) anArray = new Graphic3d_ArrayOfTriangles (aNbVertices, 3 * aNbTriangles, |
871fa103 |
133 | Standard_True, Standard_False, theHasTexels); |
31c0e219 |
134 | Standard_Real aUmin (0.0), aUmax (0.0), aVmin (0.0), aVmax (0.0), dUmax (0.0), dVmax (0.0); |
fc9b36d6 |
135 | for (aFaceIt.Init (theShape, TopAbs_FACE); aFaceIt.More(); aFaceIt.Next()) |
2bd4c032 |
136 | { |
fc9b36d6 |
137 | const TopoDS_Face& aFace = TopoDS::Face(aFaceIt.Current()); |
138 | aT = StdPrs_ToolShadedShape::Triangulation (aFace, aLoc); |
31c0e219 |
139 | if (aT.IsNull()) |
3b1817a9 |
140 | { |
141 | continue; |
142 | } |
143 | const gp_Trsf& aTrsf = aLoc.Transformation(); |
31c0e219 |
144 | Poly_Connect aPolyConnect (aT); |
3b1817a9 |
145 | // Extracts vertices & normals from nodes |
31c0e219 |
146 | const TColgp_Array1OfPnt& aNodes = aT->Nodes(); |
147 | const TColgp_Array1OfPnt2d& aUVNodes = aT->UVNodes(); |
3b1817a9 |
148 | TColgp_Array1OfDir aNormals (aNodes.Lower(), aNodes.Upper()); |
fc9b36d6 |
149 | StdPrs_ToolShadedShape::Normal (aFace, aPolyConnect, aNormals); |
3b1817a9 |
150 | |
151 | if (theHasTexels) |
2bd4c032 |
152 | { |
3b1817a9 |
153 | BRepTools::UVBounds (aFace, aUmin, aUmax, aVmin, aVmax); |
154 | dUmax = (aUmax - aUmin); |
155 | dVmax = (aVmax - aVmin); |
156 | } |
157 | |
31c0e219 |
158 | const Standard_Integer aDecal = anArray->VertexNumber(); |
3b1817a9 |
159 | for (Standard_Integer aNodeIter = aNodes.Lower(); aNodeIter <= aNodes.Upper(); ++aNodeIter) |
160 | { |
31c0e219 |
161 | aPoint = aNodes (aNodeIter); |
3b1817a9 |
162 | if (!aLoc.IsIdentity()) |
2bd4c032 |
163 | { |
31c0e219 |
164 | aPoint.Transform (aTrsf); |
3b1817a9 |
165 | aNormals (aNodeIter).Transform (aTrsf); |
2bd4c032 |
166 | } |
3b1817a9 |
167 | |
168 | if (theHasTexels && aUVNodes.Upper() == aNodes.Upper()) |
2bd4c032 |
169 | { |
3b1817a9 |
170 | const gp_Pnt2d aTexel = gp_Pnt2d ((-theUVOrigin.X() + (theUVRepeat.X() * (aUVNodes (aNodeIter).X() - aUmin)) / dUmax) / theUVScale.X(), |
171 | (-theUVOrigin.Y() + (theUVRepeat.Y() * (aUVNodes (aNodeIter).Y() - aVmin)) / dVmax) / theUVScale.Y()); |
31c0e219 |
172 | anArray->AddVertex (aPoint, aNormals (aNodeIter), aTexel); |
2bd4c032 |
173 | } |
3b1817a9 |
174 | else |
2bd4c032 |
175 | { |
31c0e219 |
176 | anArray->AddVertex (aPoint, aNormals (aNodeIter)); |
2bd4c032 |
177 | } |
3b1817a9 |
178 | } |
2bd4c032 |
179 | |
3b1817a9 |
180 | // Fill array with vertex and edge visibility info |
31c0e219 |
181 | const Poly_Array1OfTriangle& aTriangles = aT->Triangles(); |
182 | Standard_Integer anIndex[3]; |
183 | for (Standard_Integer aTriIter = 1; aTriIter <= aT->NbTriangles(); ++aTriIter) |
3b1817a9 |
184 | { |
fc9b36d6 |
185 | if (aFace.Orientation() == TopAbs_REVERSED) |
31c0e219 |
186 | { |
187 | aTriangles (aTriIter).Get (anIndex[0], anIndex[2], anIndex[1]); |
188 | } |
3b1817a9 |
189 | else |
31c0e219 |
190 | { |
191 | aTriangles (aTriIter).Get (anIndex[0], anIndex[1], anIndex[2]); |
192 | } |
3b1817a9 |
193 | |
31c0e219 |
194 | gp_Pnt aP1 = aNodes (anIndex[0]); |
195 | gp_Pnt aP2 = aNodes (anIndex[1]); |
196 | gp_Pnt aP3 = aNodes (anIndex[2]); |
3b1817a9 |
197 | |
31c0e219 |
198 | gp_Vec aV1 (aP1, aP2); |
199 | if (aV1.SquareMagnitude() <= aPreci) |
3b1817a9 |
200 | { |
201 | continue; |
202 | } |
31c0e219 |
203 | gp_Vec aV2 (aP2, aP3); |
204 | if (aV2.SquareMagnitude() <= aPreci) |
3b1817a9 |
205 | { |
206 | continue; |
207 | } |
31c0e219 |
208 | gp_Vec aV3 (aP3, aP1); |
209 | if (aV3.SquareMagnitude() <= aPreci) |
3b1817a9 |
210 | { |
211 | continue; |
212 | } |
31c0e219 |
213 | aV1.Normalize(); |
214 | aV2.Normalize(); |
215 | aV1.Cross (aV2); |
216 | if (aV1.SquareMagnitude() > aPreci) |
2bd4c032 |
217 | { |
31c0e219 |
218 | anArray->AddEdge (anIndex[0] + aDecal); |
219 | anArray->AddEdge (anIndex[1] + aDecal); |
220 | anArray->AddEdge (anIndex[2] + aDecal); |
2bd4c032 |
221 | } |
222 | } |
2bd4c032 |
223 | } |
31c0e219 |
224 | return anArray; |
225 | } |
226 | |
227 | //! Searches closed and unclosed subshapes in shape structure |
228 | //! and puts them into two compounds for separate processing of closed and unclosed sub-shapes. |
229 | static void exploreSolids (const TopoDS_Shape& theShape, |
230 | const BRep_Builder& theBuilder, |
231 | TopoDS_Compound& theCompoundForClosed, |
232 | TopoDS_Compound& theCompoundForOpened) |
233 | { |
234 | if (theShape.IsNull()) |
235 | { |
236 | return; |
237 | } |
238 | |
239 | switch (theShape.ShapeType()) |
240 | { |
241 | case TopAbs_COMPOUND: |
242 | case TopAbs_COMPSOLID: |
243 | { |
244 | for (TopoDS_Iterator anIter (theShape); anIter.More(); anIter.Next()) |
245 | { |
246 | exploreSolids (anIter.Value(), theBuilder, theCompoundForClosed, theCompoundForOpened); |
247 | } |
248 | return; |
249 | } |
250 | case TopAbs_SOLID: |
251 | { |
252 | theBuilder.Add (StdPrs_ToolShadedShape::IsClosed (theShape) ? theCompoundForClosed : theCompoundForOpened, theShape); |
253 | return; |
254 | } |
255 | case TopAbs_SHELL: |
256 | case TopAbs_FACE: |
257 | { |
258 | theBuilder.Add (theCompoundForOpened, theShape); |
259 | return; |
260 | } |
261 | case TopAbs_WIRE: |
262 | case TopAbs_EDGE: |
263 | case TopAbs_VERTEX: |
264 | case TopAbs_SHAPE: |
265 | default: |
266 | return; |
267 | } |
268 | } |
269 | |
270 | //! Prepare shaded presentation for specified shape |
271 | static Standard_Boolean shadeFromShape (const TopoDS_Shape& theShape, |
272 | const Handle(Prs3d_Presentation)& thePrs, |
273 | const Handle(Prs3d_Drawer)& theDrawer, |
274 | const Standard_Boolean theHasTexels, |
275 | const gp_Pnt2d& theUVOrigin, |
276 | const gp_Pnt2d& theUVRepeat, |
277 | const gp_Pnt2d& theUVScale, |
278 | const Standard_Boolean theIsClosed) |
279 | { |
280 | Handle(Graphic3d_ArrayOfTriangles) aPArray = fillTriangles (theShape, theHasTexels, theUVOrigin, theUVRepeat, theUVScale); |
281 | if (aPArray.IsNull()) |
282 | { |
283 | return Standard_False; |
284 | } |
3b1817a9 |
285 | |
31c0e219 |
286 | Handle(Graphic3d_Group) aGroup = Prs3d_Root::NewGroup (thePrs); |
287 | aGroup->SetClosed (theIsClosed); |
288 | if (!theDrawer->ShadingAspectGlobal()) |
289 | { |
290 | Handle(Graphic3d_AspectFillArea3d) anAsp = theDrawer->ShadingAspect()->Aspect(); |
291 | theIsClosed ? anAsp->SuppressBackFace() : anAsp->AllowBackFace(); |
292 | aGroup->SetGroupPrimitivesAspect (anAsp); |
293 | } |
294 | aGroup->AddPrimitiveArray (aPArray); |
2bd4c032 |
295 | return Standard_True; |
296 | } |
a2d5ab2e |
297 | |
31c0e219 |
298 | //! Compute boundary presentation for faces of the shape. |
299 | static void computeFaceBoundaries (const TopoDS_Shape& theShape, |
300 | const Handle(Prs3d_Presentation)& thePrs, |
301 | const Handle(Prs3d_Drawer)& theDrawer) |
a2d5ab2e |
302 | { |
303 | // collection of all triangulation nodes on edges |
304 | // for computing boundaries presentation |
305 | NCollection_List<Handle(TColgp_HArray1OfPnt)> aNodeCollection; |
306 | Standard_Integer aNodeNumber = 0; |
307 | |
308 | TopLoc_Location aTrsf; |
309 | |
310 | // explore all boundary edges |
311 | TopTools_IndexedDataMapOfShapeListOfShape anEdgesMap; |
312 | TopExp::MapShapesAndAncestors ( |
313 | theShape, TopAbs_EDGE, TopAbs_FACE, anEdgesMap); |
314 | |
315 | Standard_Integer anEdgeIdx = 1; |
316 | for ( ; anEdgeIdx <= anEdgesMap.Extent (); anEdgeIdx++) |
317 | { |
318 | // reject free edges |
319 | const TopTools_ListOfShape& aFaceList = anEdgesMap.FindFromIndex (anEdgeIdx); |
320 | if (aFaceList.Extent() == 0) |
321 | continue; |
322 | |
323 | // take one of the shared edges and get edge triangulation |
324 | const TopoDS_Face& aFace = TopoDS::Face (aFaceList.First ()); |
325 | const TopoDS_Edge& anEdge = TopoDS::Edge (anEdgesMap.FindKey (anEdgeIdx)); |
326 | |
327 | Handle(Poly_Triangulation) aTriangulation = |
328 | BRep_Tool::Triangulation (aFace, aTrsf); |
329 | |
330 | if (aTriangulation.IsNull ()) |
331 | continue; |
332 | |
333 | Handle(Poly_PolygonOnTriangulation) anEdgePoly = |
334 | BRep_Tool::PolygonOnTriangulation (anEdge, aTriangulation, aTrsf); |
335 | |
336 | if (anEdgePoly.IsNull ()) |
337 | continue; |
338 | |
339 | // get edge nodes indexes from face triangulation |
340 | const TColgp_Array1OfPnt& aTriNodes = aTriangulation->Nodes (); |
341 | const TColStd_Array1OfInteger& anEdgeNodes = anEdgePoly->Nodes (); |
342 | |
343 | if (anEdgeNodes.Length () < 2) |
344 | continue; |
345 | |
346 | // collect the edge nodes |
347 | Handle(TColgp_HArray1OfPnt) aCollected = |
348 | new TColgp_HArray1OfPnt (anEdgeNodes.Lower (), anEdgeNodes.Upper ()); |
349 | |
350 | Standard_Integer aNodeIdx = anEdgeNodes.Lower (); |
351 | for ( ; aNodeIdx <= anEdgeNodes.Upper (); aNodeIdx++) |
352 | { |
353 | // node index in face triangulation |
354 | Standard_Integer aTriIndex = anEdgeNodes.Value (aNodeIdx); |
355 | |
356 | // get node and apply location transformation to the node |
357 | gp_Pnt aTriNode = aTriNodes.Value (aTriIndex); |
358 | if (!aTrsf.IsIdentity ()) |
359 | aTriNode.Transform (aTrsf); |
360 | |
361 | // add node to the boundary array |
362 | aCollected->SetValue (aNodeIdx, aTriNode); |
363 | } |
364 | |
365 | aNodeNumber += anEdgeNodes.Length (); |
366 | aNodeCollection.Append (aCollected); |
367 | } |
368 | |
369 | // check if it possible to continue building the presentation |
370 | if (aNodeNumber == 0) |
371 | return; |
372 | |
373 | // allocate polyline array for presentation |
374 | Standard_Integer aSegmentEdgeNb = |
375 | (aNodeNumber - aNodeCollection.Extent()) * 2; |
376 | |
377 | Handle(Graphic3d_ArrayOfSegments) aSegments = |
378 | new Graphic3d_ArrayOfSegments (aNodeNumber, aSegmentEdgeNb); |
379 | |
380 | // build presentation for edge bondaries |
381 | NCollection_List<Handle(TColgp_HArray1OfPnt)>::Iterator |
382 | aCollIt (aNodeCollection); |
383 | |
384 | // the edge index is increased in each iteration step to |
385 | // avoid contiguous segments between different face edges. |
386 | for ( ; aCollIt.More(); aCollIt.Next () ) |
387 | { |
388 | const Handle(TColgp_HArray1OfPnt)& aNodeArray = aCollIt.Value (); |
389 | |
390 | Standard_Integer aNodeIdx = aNodeArray->Lower (); |
391 | |
392 | // add first node (this node is not shared with previous segment). |
393 | // for each face edge, indices for sharing nodes |
394 | // between segments begin from the first added node. |
395 | Standard_Integer aSegmentEdge = |
396 | aSegments->AddVertex (aNodeArray->Value (aNodeIdx)); |
397 | |
398 | // add subsequent nodes and provide edge indexes for sharing |
399 | // the nodes between the sequential segments. |
400 | for ( aNodeIdx++; aNodeIdx <= aNodeArray->Upper (); aNodeIdx++ ) |
401 | { |
402 | aSegments->AddVertex (aNodeArray->Value (aNodeIdx)); |
403 | aSegments->AddEdge ( aSegmentEdge); |
404 | aSegments->AddEdge (++aSegmentEdge); |
405 | } |
406 | } |
407 | |
408 | // set up aspect and add polyline data |
409 | Handle(Graphic3d_AspectLine3d) aBoundaryAspect = |
410 | theDrawer->FaceBoundaryAspect ()->Aspect (); |
411 | |
31c0e219 |
412 | Handle(Graphic3d_Group) aPrsGrp = Prs3d_Root::CurrentGroup (thePrs); |
a2d5ab2e |
413 | aPrsGrp->SetGroupPrimitivesAspect (aBoundaryAspect); |
a2d5ab2e |
414 | aPrsGrp->AddPrimitiveArray (aSegments); |
a2d5ab2e |
415 | } |
2bd4c032 |
416 | }; |
417 | |
418 | // ======================================================================= |
419 | // function : Add |
420 | // purpose : |
421 | // ======================================================================= |
31c0e219 |
422 | void StdPrs_ShadedShape::Add (const Handle(Prs3d_Presentation)& thePrs, |
423 | const TopoDS_Shape& theShape, |
424 | const Handle(Prs3d_Drawer)& theDrawer, |
425 | const Standard_Boolean theToExploreSolids) |
2bd4c032 |
426 | { |
427 | gp_Pnt2d aDummy; |
31c0e219 |
428 | StdPrs_ShadedShape::Add (thePrs, theShape, theDrawer, |
429 | Standard_False, aDummy, aDummy, aDummy, theToExploreSolids); |
2bd4c032 |
430 | } |
431 | |
ad3217cd |
432 | // ======================================================================= |
433 | // function : Tessellate |
434 | // purpose : |
435 | // ======================================================================= |
436 | void StdPrs_ShadedShape::Tessellate (const TopoDS_Shape& theShape, |
437 | const Handle (Prs3d_Drawer)& theDrawer) |
438 | { |
31c0e219 |
439 | // Check if it is possible to avoid unnecessary recomputation of shape triangulation |
9dba391d |
440 | Standard_Real aDeflection = Prs3d::GetDeflection (theShape, theDrawer); |
ad3217cd |
441 | if (BRepTools::Triangulation (theShape, aDeflection)) |
442 | { |
443 | return; |
444 | } |
445 | |
446 | // retrieve meshing tool from Factory |
447 | BRepTools::Clean (theShape); |
448 | Handle(BRepMesh_DiscretRoot) aMeshAlgo = BRepMesh_DiscretFactory::Get().Discret (theShape, |
449 | aDeflection, |
450 | theDrawer->HLRAngle()); |
451 | if (!aMeshAlgo.IsNull()) |
452 | { |
453 | aMeshAlgo->Perform(); |
454 | } |
455 | } |
456 | |
2bd4c032 |
457 | // ======================================================================= |
458 | // function : Add |
459 | // purpose : |
460 | // ======================================================================= |
31c0e219 |
461 | void StdPrs_ShadedShape::Add (const Handle (Prs3d_Presentation)& thePrs, |
2bd4c032 |
462 | const TopoDS_Shape& theShape, |
463 | const Handle (Prs3d_Drawer)& theDrawer, |
464 | const Standard_Boolean theHasTexels, |
465 | const gp_Pnt2d& theUVOrigin, |
466 | const gp_Pnt2d& theUVRepeat, |
31c0e219 |
467 | const gp_Pnt2d& theUVScale, |
468 | const Standard_Boolean theToExploreSolids) |
2bd4c032 |
469 | { |
470 | if (theShape.IsNull()) |
471 | { |
472 | return; |
473 | } |
474 | |
31c0e219 |
475 | // add wireframe presentation for isolated edges and vertices |
476 | wireframeFromShape (thePrs, theShape, theDrawer); |
477 | |
478 | // IsClosed also verifies triangulation completeness - perform tessellation beforehand |
479 | Tessellate (theShape, theDrawer); |
480 | const Standard_Boolean isClosed = StdPrs_ToolShadedShape::IsClosed (theShape); |
481 | if ((theShape.ShapeType() == TopAbs_COMPOUND |
482 | || theShape.ShapeType() == TopAbs_COMPSOLID) |
483 | && !isClosed |
484 | && theToExploreSolids) |
2bd4c032 |
485 | { |
31c0e219 |
486 | // collect two compounds: for opened and closed (solid) sub-shapes |
487 | TopoDS_Compound anOpened, aClosed; |
488 | BRep_Builder aBuilder; |
489 | aBuilder.MakeCompound (aClosed); |
490 | aBuilder.MakeCompound (anOpened); |
491 | exploreSolids (theShape, aBuilder, aClosed, anOpened); |
492 | |
493 | TopoDS_Iterator aShapeIter (aClosed); |
494 | if (aShapeIter.More()) |
2bd4c032 |
495 | { |
31c0e219 |
496 | shadeFromShape (aClosed, thePrs, theDrawer, |
497 | theHasTexels, theUVOrigin, theUVRepeat, theUVScale, Standard_True); |
2bd4c032 |
498 | } |
31c0e219 |
499 | |
500 | aShapeIter.Initialize (anOpened); |
501 | if (aShapeIter.More()) |
2bd4c032 |
502 | { |
31c0e219 |
503 | shadeFromShape (anOpened, thePrs, theDrawer, |
504 | theHasTexels, theUVOrigin, theUVRepeat, theUVScale, Standard_False); |
2bd4c032 |
505 | } |
506 | } |
31c0e219 |
507 | else |
508 | { |
509 | shadeFromShape (theShape, thePrs, theDrawer, |
510 | theHasTexels, theUVOrigin, theUVRepeat, theUVScale, isClosed); |
511 | } |
2bd4c032 |
512 | |
31c0e219 |
513 | if (theDrawer->IsFaceBoundaryDraw()) |
a2d5ab2e |
514 | { |
31c0e219 |
515 | computeFaceBoundaries (theShape, thePrs, theDrawer); |
a2d5ab2e |
516 | } |
517 | } |