1 // Copyright (C) 2014-2015 EDF-R&D
2 // This library is free software; you can redistribute it and/or
3 // modify it under the terms of the GNU Lesser General Public
4 // License as published by the Free Software Foundation; either
5 // version 2.1 of the License, or (at your option) any later version.
7 // This library is distributed in the hope that it will be useful,
8 // but WITHOUT ANY WARRANTY; without even the implied warranty of
9 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
10 // Lesser General Public License for more details.
12 // You should have received a copy of the GNU Lesser General Public
13 // License along with this library; if not, write to the Free Software
14 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
19 #include "HYDROData_ChannelAltitude.h"
21 #include "HYDROData_Document.h"
22 #include "HYDROData_Object.h"
23 #include "HYDROData_Channel.h"
24 #include "HYDROData_Projection.h"
25 #include "HYDROData_Polyline3D.h"
26 #include "HYDROData_PolylineXY.h"
27 #include "HYDROData_ProfileUZ.h"
28 #include "HYDROData_Profile.h"
31 #include "HYDRO_trace.hxx"
34 #include <BRepBuilderAPI_MakeVertex.hxx>
35 #include <BRepExtrema_DistShapeShape.hxx>
37 #include <Precision.hxx>
41 #include <TopoDS_Shape.hxx>
42 #include <TopoDS_Edge.hxx>
43 #include <TopoDS_Face.hxx>
44 #include <TopoDS_Vertex.hxx>
45 #include <TopoDS_Wire.hxx>
46 #include <TopExp_Explorer.hxx>
47 #include <TopAbs_ShapeEnum.hxx>
48 #include <BRep_Tool.hxx>
49 #include <BRepTools.hxx>
50 #include <Geom_Curve.hxx>
52 #include <gp_Trsf.hxx>
56 IMPLEMENT_STANDARD_HANDLE(HYDROData_ChannelAltitude, HYDROData_IAltitudeObject)
57 IMPLEMENT_STANDARD_RTTIEXT(HYDROData_ChannelAltitude, HYDROData_IAltitudeObject)
59 HYDROData_ChannelAltitude::HYDROData_ChannelAltitude()
60 : HYDROData_IAltitudeObject()
64 HYDROData_ChannelAltitude::~HYDROData_ChannelAltitude()
68 double HYDROData_ChannelAltitude::GetAltitudeForPoint( const gp_XY& thePoint,
71 DEBTRACE("GetAltitudeForPoint p(" << thePoint.X() << ", " << thePoint.Y() << ")");
72 double aResAltitude = GetInvalidAltitude();
74 Handle(HYDROData_Channel) aChannel =
75 Handle(HYDROData_Channel)::DownCast(GetFatherObject());
76 if (aChannel.IsNull())
78 DEBTRACE("aChannel.IsNull()");
81 DEBTRACE("aChannel: " << aChannel->GetName().toStdString());
83 Handle(HYDROData_Polyline3D) aGuideLine = aChannel->GetGuideLine();
84 if (aGuideLine.IsNull())
86 DEBTRACE("aGuideLine.IsNull()");
89 //DEBTRACE("aGuideLine: " << aGuideLine->GetName().toStdString());
91 Handle(HYDROData_PolylineXY) aGuideXY = aGuideLine->GetPolylineXY();
92 if (aGuideXY.IsNull())
94 DEBTRACE("aGuideXY.IsNull()");
97 //DEBTRACE("aGuideXY: " << aGuideXY->GetName().toStdString());
99 Handle(HYDROData_ProfileUZ) aGuideUZ = aGuideLine->GetProfileUZ();
100 if (aGuideUZ.IsNull())
102 aGuideUZ = aGuideLine->GetChildProfileUZ(); // profile obtained from bathymetry
104 if (aGuideUZ.IsNull())
106 DEBTRACE("aGuideUZ.IsNull()");
109 //DEBTRACE("aGuideUZ: " << aGuideUZ->GetName().toStdString());
111 Handle (HYDROData_Profile) aProfile = aChannel->GetProfile();
112 if (aProfile.IsNull())
116 //DEBTRACE("aProfile: " << aProfile->GetName().toStdString());
118 // --- See GEOMImpl_ProjectionDriver.cxx
120 TopoDS_Shape aShape = aGuideXY->GetShape();
121 gp_Pnt P1(thePoint.X(), thePoint.Y(), 0);
122 TopoDS_Shape aPoint = BRepBuilderAPI_MakeVertex(P1).Shape();
124 if (aPoint.IsNull() || aShape.IsNull())
126 DEBTRACE("aPoint.IsNull() || aShape.IsNull()");
130 if (aShape.ShapeType() != TopAbs_EDGE && aShape.ShapeType() != TopAbs_WIRE)
132 DEBTRACE("Projection aborted : the shape is neither an edge nor a wire");
136 // Perform projection.
137 BRepExtrema_DistShapeShape aDistShSh(aPoint, aShape, Extrema_ExtFlag_MIN);
139 if (aDistShSh.IsDone() == Standard_False)
141 DEBTRACE("Projection not done");
145 Standard_Boolean hasValidSolution = Standard_False;
146 Standard_Integer aNbSolutions = aDistShSh.NbSolution();
149 Standard_Real aTolConf = BRep_Tool::Tolerance(TopoDS::Vertex(aPoint));
150 Standard_Real aTolAng = 1.e-4;
152 for (i = 1; i <= aNbSolutions; i++)
154 Standard_Boolean isValid = Standard_False;
155 BRepExtrema_SupportType aSupportType = aDistShSh.SupportTypeShape2(i);
156 TopoDS_Shape aSupportShape = aDistShSh.SupportOnShape2(i);
158 if (aSupportType == BRepExtrema_IsOnEdge)
160 // Minimal distance inside edge is really a projection.
161 isValid = Standard_True;
162 aDistShSh.ParOnEdgeS2(i, aParam);
164 else if (aSupportType == BRepExtrema_IsVertex)
166 TopExp_Explorer anExp(aShape, TopAbs_EDGE);
168 if (aDistShSh.Value() <= aTolConf)
170 // The point lies on the shape. This means this point
171 // is really a projection.
172 for (; anExp.More() && !isValid; anExp.Next())
174 TopoDS_Edge aCurEdge = TopoDS::Edge(anExp.Current());
176 if (aCurEdge.IsNull() == Standard_False)
178 TopoDS_Vertex aVtx[2];
180 TopExp::Vertices(aCurEdge, aVtx[0], aVtx[1]);
182 for (int j = 0; j < 2; j++)
184 if (aSupportShape.IsSame(aVtx[j]))
186 // The current edge is a projection edge.
187 isValid = Standard_True;
188 aSupportShape = aCurEdge;
189 aParam = BRep_Tool::Parameter(aVtx[j], aCurEdge);
198 // Minimal distance to vertex is not always a real projection.
199 gp_Pnt aPnt = BRep_Tool::Pnt(TopoDS::Vertex(aPoint));
200 gp_Pnt aPrjPnt = BRep_Tool::Pnt(TopoDS::Vertex(aSupportShape));
201 gp_Vec aDProjP(aPrjPnt, aPnt);
203 for (; anExp.More() && !isValid; anExp.Next())
205 TopoDS_Edge aCurEdge = TopoDS::Edge(anExp.Current());
207 if (aCurEdge.IsNull() == Standard_False)
209 TopoDS_Vertex aVtx[2];
211 TopExp::Vertices(aCurEdge, aVtx[0], aVtx[1]);
213 for (int j = 0; j < 2; j++)
215 if (aSupportShape.IsSame(aVtx[j]))
217 // Check if the point is a projection to the current edge.
218 Standard_Real anEdgePars[2];
219 Handle(Geom_Curve) aCurve = BRep_Tool::Curve(aCurEdge, anEdgePars[0], anEdgePars[1]);
223 aParam = BRep_Tool::Parameter(aVtx[j], aCurEdge);
224 aCurve->D1(aParam, aVal, aD1);
226 if (Abs(aD1.Dot(aDProjP)) <= aTolAng)
228 // The current edge is a projection edge.
229 isValid = Standard_True;
230 aSupportShape = aCurEdge;
242 if (hasValidSolution)
244 DEBTRACE("Projection aborted : multiple solutions");
248 // Store the valid solution.
249 hasValidSolution = Standard_True;
251 // profile altitude at projection point
252 HYDROData_IPolyline::PointsList aProfilePoints = aGuideUZ->GetPoints();
253 if ( aProfilePoints.IsEmpty() )
255 DEBTRACE("empty profile UZ");
258 double aDepth = HYDROData_ProfileUZ::GetDepthFromDistance( aProfilePoints, aParam );
259 //DEBTRACE("profile altitude: " << aDepth);
261 // Compute edge index.
262 TopExp_Explorer anExp(aShape, TopAbs_EDGE);
264 for (; anExp.More(); anExp.Next(), anIndex++)
266 if (aSupportShape.IsSame(anExp.Current()))
272 // get the XY distance from point to guideline
273 const gp_Pnt &aPntProj = aDistShSh.PointOnShape2(i);
274 //DEBTRACE("projection: (" << aPntProj.X() << ", " << aPntProj.Y() << ", " << aPntProj.Z() << ")");
275 gp_XY aProjXY = gp_XY(aPntProj.X(), aPntProj.Y());
276 aProjXY.Subtract(thePoint);
277 double distance = aProjXY.Modulus();
278 //DEBTRACE("distance to guideline " << distance);
280 // get delta altitude on section (supposed symmetric) from guideline distance (aParam)
285 HYDROData_ProfileUZ::PointsList aSectionPoints = aProfile->GetParametricPoints();
286 for ( int i = 1, aNbPoints = aSectionPoints.Size(); i <= aNbPoints; ++i )
288 const HYDROData_IPolyline::Point& aPolylinePoint = aSectionPoints.Value( i );
289 //DEBTRACE(" profile point: " << aPolylinePoint.X() << " " << aPolylinePoint.Y());
290 if (aPolylinePoint.X() < distance)
293 pt1 = aPolylinePoint;
295 if (aPolylinePoint.X() >= distance)
297 pt2 = aPolylinePoint;
301 if ((i1 == 0) && (distance > 0))
303 DEBTRACE("Projection aborted : non centered profile");
306 if (i1 == aProfilePoints.Size()) // distance >= profile width
312 delta = pt1.Y() + (pt2.Y() - pt1.Y())*(distance -pt1.X())/(pt2.X()-pt1.X());
314 aResAltitude = delta + aDepth;
315 DEBTRACE("distance XY: "<< aParam << " distance to guideline: " << distance << " final altitude: " << aResAltitude << " delta: " << delta);
320 if (!hasValidSolution)
322 DEBTRACE("Projection aborted : no projection");