1 // Copyright (C) 2007-2010 CEA/DEN, EDF R&D, OPEN CASCADE
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
20 #include "GEOM_EdgeSource.h"
22 #include <vtkObjectFactory.h>
24 #include <vtkPoints.h>
25 #include <vtkCellArray.h>
27 #include <BRep_Tool.hxx>
28 #include <Poly_Polygon3D.hxx>
29 #include <Poly_Triangulation.hxx>
30 #include <TColStd_Array1OfInteger.hxx>
31 #include <Poly_PolygonOnTriangulation.hxx>
32 #include <GeomAdaptor_Curve.hxx>
33 #include <GCPnts_AbscissaPoint.hxx>
35 #include <vtkStripper.h>
36 #include <vtkPolyData.h>
38 vtkStandardNewMacro(GEOM_EdgeSource);
40 GEOM_EdgeSource::GEOM_EdgeSource() :
45 GEOM_EdgeSource::~GEOM_EdgeSource()
49 void GEOM_EdgeSource::AddEdge (const TopoDS_Edge& theEdge,
52 myEdgeSet.Add(theEdge);
53 myIsVector = theIsVector;
60 vtkPolyData* aPolyData = GetOutput();
61 aPolyData->Allocate();
62 vtkPoints* aPts = vtkPoints::New();
63 aPolyData->SetPoints(aPts);
66 TEdgeSet::Iterator anIter (myEdgeSet);
67 for (; anIter.More(); anIter.Next()) {
68 TopoDS_Edge anEdge = anIter.Value();
70 // draw curve direction (issue 0021087)
71 anEdge.Orientation( TopAbs_FORWARD );
72 OCC2VTK(anEdge,aPolyData,aPts,myIsVector||myIsVectorMode);
76 void GEOM_EdgeSource::OCC2VTK (const TopoDS_Edge& theEdge,
77 vtkPolyData* thePolyData,
81 Handle(Poly_PolygonOnTriangulation) aEdgePoly;
82 Standard_Integer i = 1;
83 Handle(Poly_Triangulation) T;
84 TopLoc_Location aEdgeLoc;
85 BRep_Tool::PolygonOnTriangulation(theEdge, aEdgePoly, T, aEdgeLoc, i);
87 Handle(Poly_Polygon3D) P;
88 if(aEdgePoly.IsNull())
89 P = BRep_Tool::Polygon3D(theEdge, aEdgeLoc);
91 if(P.IsNull() && aEdgePoly.IsNull())
97 Standard_Boolean isidtrsf = true;
98 if(!aEdgeLoc.IsIdentity()) {
100 edgeTransf = aEdgeLoc.Transformation();
105 if (aEdgePoly.IsNull()) {
106 Standard_Integer aNbNodes = P->NbNodes();
107 const TColgp_Array1OfPnt& aNodesP = P->Nodes();
110 aP2 = aNodesP(aNbNodes);
112 for (int j = 1; j < aNbNodes; j++) {
113 gp_Pnt pt1 = aNodesP(j);
114 gp_Pnt pt2 = aNodesP(j+1);
117 // apply edge transformation
118 pt1.Transform(edgeTransf);
119 pt2.Transform(edgeTransf);
122 float aCoord1[3] = {pt1.X(), pt1.Y(), pt1.Z()};
124 anIds[0] = thePts->InsertNextPoint(aCoord1);
126 float aCoord2[3] = {pt2.X(), pt2.Y(), pt2.Z()};
127 anIds[1] = thePts->InsertNextPoint(aCoord2);
129 thePolyData->InsertNextCell(VTK_LINE,2,anIds);
132 Standard_Integer aNbNodes = aEdgePoly->NbNodes();
133 const TColStd_Array1OfInteger& aNodeIds = aEdgePoly->Nodes();
134 const TColgp_Array1OfPnt& anId2Pnts = T->Nodes();
136 aP1 = anId2Pnts(aNodeIds(1));
137 aP2 = anId2Pnts(aNodeIds(aNbNodes));
139 for(int j = 1; j < aNbNodes; j++) {
140 Standard_Integer id1 = aNodeIds(j);
141 Standard_Integer id2 = aNodeIds(j+1);
143 gp_Pnt pt1 = anId2Pnts(id1);
144 gp_Pnt pt2 = anId2Pnts(id2);
147 // apply edge transformation
148 pt1.Transform(edgeTransf);
149 pt2.Transform(edgeTransf);
152 float aCoord1[3] = {pt1.X(), pt1.Y(), pt1.Z()};
154 anIds[0] = thePts->InsertNextPoint(aCoord1);
156 float aCoord2[3] = {pt2.X(), pt2.Y(), pt2.Z()};
157 anIds[1] = thePts->InsertNextPoint(aCoord2);
159 thePolyData->InsertNextCell(VTK_LINE,2,anIds);
164 // vector representation has an arrow on its end
168 // apply edge transformation
169 aP1.Transform(edgeTransf);
170 aP2.Transform(edgeTransf);
177 Handle(Geom_Curve) C = BRep_Tool::Curve(theEdge,fp,lp);
178 if ( theEdge.Orientation() == TopAbs_FORWARD ) {
179 C->D1(lp, aP2, aDirVec);
181 C->D1(fp, aP1, aDirVec);
185 GeomAdaptor_Curve aAdC;
186 aAdC.Load(C, fp, lp);
187 Standard_Real aDist = GCPnts_AbscissaPoint::Length(aAdC, fp, lp);
188 if (aDist < gp::Resolution()) return;
192 if ( theEdge.Orientation() == TopAbs_FORWARD )
193 aDirection = aDirVec;
195 aDirection = -aDirVec;
197 Standard_Real anAngle = PI/180.*5.;
198 Standard_Real aLength = aDist/10.;
200 Standard_Real dx,dy,dz;
201 aDirection.Coord(dx,dy,dz);
204 Standard_Real xo,yo,zo;
207 // Center of circle that arrow based
208 gp_XYZ aPc = aP2.XYZ() - aDirection.XYZ() * aLength;
210 // Construction of the base vectors for the arrow circle
212 if (Abs(dx) <= Abs(dy) && Abs(dx) <= Abs(dz)) aDirN = gp::DX();
213 else if (Abs(dy) <= Abs(dz) && Abs(dy) <= Abs(dx)) aDirN = gp::DY();
214 else aDirN = gp::DZ();
216 gp_Dir aDirI = aDirection ^ aDirN;
217 gp_Dir aDirJ = aDirection ^ aDirI;
219 // Add points and segments, composing the arrow
220 Standard_Real cosinus, sinus, Tg = tan(anAngle);
222 float coord[3] = {xo, yo, zo};
224 vtkIdType ptLoc = thePts->InsertNextPoint(coord);
225 vtkIdType ptFirst = 0;
226 vtkIdType ptPrev = 0;
232 for (int i = 1; i <= NbPoints; i++, ptPrev = ptCur)
234 cosinus = cos(2. * PI / NbPoints * (i-1));
235 sinus = sin(2. * PI / NbPoints * (i-1));
237 gp_XYZ aP = aPc + (aDirI.XYZ() * cosinus + aDirJ.XYZ() * sinus) * aLength * Tg;
243 ptCur = thePts->InsertNextPoint(coord);
250 // insert line (ptCur,ptPrev)
252 thePolyData->InsertNextCell(VTK_LINE,2,pts);
255 // insert line (ptCur,ptLoc)
257 thePolyData->InsertNextCell(VTK_LINE,2,pts);
260 // insert line (ptCur,ptFirst)
263 thePolyData->InsertNextCell(VTK_LINE,2,pts);
267 void GEOM_EdgeSource::SetVectorMode (bool theMode)
269 myIsVectorMode = theMode;
272 bool GEOM_EdgeSource::GetVectorMode ()
274 return !myIsVector && myIsVectorMode;