-// Copyright (C) 2007-2013 CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2014 CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
-// version 2.1 of the License.
+// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
#include <GEOMImpl_ProjectionDriver.hxx>
#include <GEOMImpl_IMirror.hxx>
+#include <GEOMImpl_IProjection.hxx>
#include <GEOMImpl_Types.hxx>
#include <GEOM_Function.hxx>
#include <BRepBuilderAPI_Transform.hxx>
#include <BRepBuilderAPI_MakeVertex.hxx>
#include <BRepClass_FaceClassifier.hxx>
+#include <BRepExtrema_DistShapeShape.hxx>
#include <BRepOffsetAPI_NormalProjection.hxx>
#include <BRepTools.hxx>
#include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
#include <GeomAPI_ProjectPointOnSurf.hxx>
+#include <Geom_Curve.hxx>
#include <Geom_Plane.hxx>
#include <gp_Trsf.hxx>
if (aFunction.IsNull()) return 0;
- TopoDS_Shape aShape;
- gp_Trsf aTrsf;
-
- GEOMImpl_IMirror TI (aFunction);
Standard_Integer aType = aFunction->GetType();
- Handle(GEOM_Function) anOriginalFunction = TI.GetOriginal();
- if (anOriginalFunction.IsNull()) return 0;
+ if (aType == PROJECTION_COPY) {
+ // Projection
+ TopoDS_Shape aShape;
+ gp_Trsf aTrsf;
+
+ GEOMImpl_IMirror TI (aFunction);
- TopoDS_Shape anOriginal = anOriginalFunction->GetValue();
- if (anOriginal.IsNull()) return 0;
+ Handle(GEOM_Function) anOriginalFunction = TI.GetOriginal();
+ if (anOriginalFunction.IsNull()) return 0;
+
+ TopoDS_Shape anOriginal = anOriginalFunction->GetValue();
+ if (anOriginal.IsNull()) return 0;
- // Projection
- if (aType == PROJECTION_COPY) {
// Source shape (point, edge or wire)
if (anOriginal.ShapeType() != TopAbs_VERTEX &&
anOriginal.ShapeType() != TopAbs_EDGE &&
BRepOffsetAPI_NormalProjection OrtProj (aFaceShape);
OrtProj.Add(anOriginal);
- //Standard_Real tol = 1.e-4;
- //Standard_Real tol2d = Pow(tol, 2./3);
- //GeomAbs_Shape Continuity = GeomAbs_C2;
- //Standard_Integer MaxDeg = 14;
- //Standard_Integer MaxSeg = 16;
- //OrtProj.SetParams(tol, tol2d, Continuity, MaxDeg, MaxSeg);
+ // Compute maximal tolerance of projection.
+ TopExp_Explorer anExp(anOriginal,TopAbs_VERTEX);
+ Standard_Real aMaxTol = Precision::Confusion();
+
+ for(; anExp.More(); anExp.Next()) {
+ const TopoDS_Vertex aVtx = TopoDS::Vertex(anExp.Current());
+ const Standard_Real aCurTol = BRep_Tool::Tolerance(aVtx);
+
+ if (aMaxTol < aCurTol) {
+ aMaxTol = aCurTol;
+ }
+ }
+
+ Standard_Real tol2d = Pow(aMaxTol, 2./3);
+ GeomAbs_Shape Continuity = GeomAbs_C2;
+ Standard_Integer MaxDeg = 14;
+ Standard_Integer MaxSeg = 16;
+
+ OrtProj.SetParams(aMaxTol, tol2d, Continuity, MaxDeg, MaxSeg);
+
try {
OrtProj.Build();
} catch (Standard_Failure) {
aFunction->SetValue(aShape);
log.SetTouched(Label());
+ } else if (aType == PROJECTION_ON_WIRE) {
+ // Perform projection of point on a wire or an edge.
+ GEOMImpl_IProjection aProj (aFunction);
+ Handle(GEOM_Function) aPointFunction = aProj.GetPoint();
+ Handle(GEOM_Function) aShapeFunction = aProj.GetShape();
+
+ if (aPointFunction.IsNull() || aShapeFunction.IsNull()) {
+ return 0;
+ }
+
+ TopoDS_Shape aPoint = aPointFunction->GetValue();
+ TopoDS_Shape aShape = aShapeFunction->GetValue();
+
+ if (aPoint.IsNull() || aShape.IsNull()) {
+ return 0;
+ }
+
+ // Check shape types.
+ if (aPoint.ShapeType() != TopAbs_VERTEX) {
+ Standard_ConstructionError::Raise
+ ("Projection aborted : the point is not a vertex");
+ }
+
+ if (aShape.ShapeType() != TopAbs_EDGE &&
+ aShape.ShapeType() != TopAbs_WIRE) {
+ Standard_ConstructionError::Raise
+ ("Projection aborted : the shape is neither an edge nor a wire");
+ }
+
+ // Perform projection.
+ BRepExtrema_DistShapeShape aDistShSh(aPoint, aShape, Extrema_ExtFlag_MIN);
+
+ if (aDistShSh.IsDone() == Standard_False) {
+ Standard_ConstructionError::Raise("Projection not done");
+ }
+
+ Standard_Boolean hasValidSolution = Standard_False;
+ Standard_Integer aNbSolutions = aDistShSh.NbSolution();
+ Standard_Integer i;
+ double aParam = 0.;
+ Standard_Real aTolConf = BRep_Tool::Tolerance(TopoDS::Vertex(aPoint));
+ Standard_Real aTolAng = 1.e-4;
+
+ for (i = 1; i <= aNbSolutions; i++) {
+ Standard_Boolean isValid = Standard_False;
+ BRepExtrema_SupportType aSupportType = aDistShSh.SupportTypeShape2(i);
+ TopoDS_Shape aSupportShape = aDistShSh.SupportOnShape2(i);
+
+ if (aSupportType == BRepExtrema_IsOnEdge) {
+ // Minimal distance inside edge is really a projection.
+ isValid = Standard_True;
+ aDistShSh.ParOnEdgeS2(i, aParam);
+ } else if (aSupportType == BRepExtrema_IsVertex) {
+ TopExp_Explorer anExp(aShape, TopAbs_EDGE);
+
+ if (aDistShSh.Value() <= aTolConf) {
+ // The point lies on the shape. This means this point
+ // is really a projection.
+ for (; anExp.More() && !isValid; anExp.Next()) {
+ TopoDS_Edge aCurEdge = TopoDS::Edge(anExp.Current());
+
+ if (aCurEdge.IsNull() == Standard_False) {
+ TopoDS_Vertex aVtx[2];
+
+ TopExp::Vertices(aCurEdge, aVtx[0], aVtx[1]);
+
+ for (int j = 0; j < 2; j++) {
+ if (aSupportShape.IsSame(aVtx[j])) {
+ // The current edge is a projection edge.
+ isValid = Standard_True;
+ aSupportShape = aCurEdge;
+ aParam = BRep_Tool::Parameter(aVtx[j], aCurEdge);
+ break;
+ }
+ }
+ }
+ }
+ } else {
+ // Minimal distance to vertex is not always a real projection.
+ gp_Pnt aPnt = BRep_Tool::Pnt(TopoDS::Vertex(aPoint));
+ gp_Pnt aPrjPnt = BRep_Tool::Pnt(TopoDS::Vertex(aSupportShape));
+ gp_Vec aDProjP(aPrjPnt, aPnt);
+
+ for (; anExp.More() && !isValid; anExp.Next()) {
+ TopoDS_Edge aCurEdge = TopoDS::Edge(anExp.Current());
+
+ if (aCurEdge.IsNull() == Standard_False) {
+ TopoDS_Vertex aVtx[2];
+
+ TopExp::Vertices(aCurEdge, aVtx[0], aVtx[1]);
+
+ for (int j = 0; j < 2; j++) {
+ if (aSupportShape.IsSame(aVtx[j])) {
+ // Check if the point is a projection to the current edge.
+ Standard_Real anEdgePars[2];
+ Handle(Geom_Curve) aCurve =
+ BRep_Tool::Curve(aCurEdge, anEdgePars[0], anEdgePars[1]);
+ gp_Pnt aVal;
+ gp_Vec aD1;
+
+ aParam = BRep_Tool::Parameter(aVtx[j], aCurEdge);
+ aCurve->D1(aParam, aVal, aD1);
+
+ if (Abs(aD1.Dot(aDProjP)) <= aTolAng) {
+ // The current edge is a projection edge.
+ isValid = Standard_True;
+ aSupportShape = aCurEdge;
+ break;
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+
+
+ if (isValid) {
+ if (hasValidSolution) {
+ Standard_ConstructionError::Raise
+ ("Projection aborted : multiple solutions");
+ }
+
+ // Store the valid solution.
+ hasValidSolution = Standard_True;
+
+ // Normalize parameter.
+ TopoDS_Edge aSupportEdge = TopoDS::Edge(aSupportShape);
+ Standard_Real aF, aL;
+
+ BRep_Tool::Range(aSupportEdge, aF, aL);
+
+ if (Abs(aL - aF) <= aTolConf) {
+ Standard_ConstructionError::Raise
+ ("Projection aborted : degenerated projection edge");
+ }
+
+ aParam = (aParam - aF)/(aL - aF);
+ aProj.SetU(aParam);
+
+ // Compute edge index.
+ TopExp_Explorer anExp(aShape, TopAbs_EDGE);
+ int anIndex = 0;
+
+ for (; anExp.More(); anExp.Next(), anIndex++) {
+ if (aSupportShape.IsSame(anExp.Current())) {
+ aProj.SetIndex(anIndex);
+ break;
+ }
+ }
+
+ if (!anExp.More()) {
+ Standard_ConstructionError::Raise
+ ("Projection aborted : Can't define edge index");
+ }
+
+ // Construct a projection vertex.
+ const gp_Pnt &aPntProj = aDistShSh.PointOnShape2(i);
+ TopoDS_Shape aProj = BRepBuilderAPI_MakeVertex(aPntProj).Shape();
+
+ aFunction->SetValue(aProj);
+ }
+ }
+
+ if (!hasValidSolution) {
+ Standard_ConstructionError::Raise("Projection aborted : no projection");
+ }
}
return 1;
if (Label().IsNull()) return 0;
Handle(GEOM_Function) function = GEOM_Function::GetFunction(Label());
- GEOMImpl_IMirror aCI( function );
Standard_Integer aType = function->GetType();
theOperationName = "PROJECTION";
switch ( aType ) {
case PROJECTION_COPY:
- AddParam( theParams, "Source object", aCI.GetOriginal() );
- AddParam( theParams, "Target face", aCI.GetPlane() );
- break;
+ {
+ GEOMImpl_IMirror aCI( function );
+
+ AddParam( theParams, "Source object", aCI.GetOriginal() );
+ AddParam( theParams, "Target face", aCI.GetPlane() );
+ break;
+ }
+ case PROJECTION_ON_WIRE:
+ {
+ GEOMImpl_IProjection aProj (function);
+
+ AddParam(theParams, "Point", aProj.GetPoint());
+ AddParam(theParams, "Shape", aProj.GetShape());
+
+ break;
+ }
default:
return false;
}
