#include <GEOMImpl_IMirror.hxx>
#include <GEOMImpl_IProjection.hxx>
+#include <GEOMImpl_IProjOnCyl.hxx>
#include <GEOMImpl_Types.hxx>
#include <GEOM_Function.hxx>
+#include <GEOMUtils.hxx>
+#include <GEOMUtils_HTrsfCurve2d.hxx>
+#include <Approx_Curve2d.hxx>
#include <BRep_Tool.hxx>
+#include <BRepAdaptor_Curve2d.hxx>
#include <BRepBuilderAPI_Transform.hxx>
+#include <BRepBuilderAPI_MakeEdge.hxx>
+#include <BRepBuilderAPI_MakeFace.hxx>
#include <BRepBuilderAPI_MakeVertex.hxx>
+#include <BRepBuilderAPI_MakeWire.hxx>
#include <BRepClass_FaceClassifier.hxx>
#include <BRepExtrema_DistShapeShape.hxx>
+#include <BRepLib.hxx>
#include <BRepOffsetAPI_NormalProjection.hxx>
#include <BRepTools.hxx>
+#include <BRepTools_WireExplorer.hxx>
#include <TopAbs.hxx>
#include <TopExp.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Vertex.hxx>
-#include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
+#include <TopoDS_Wire.hxx>
+#include <TopTools_ListIteratorOfListOfShape.hxx>
#include <GeomAPI_ProjectPointOnSurf.hxx>
#include <Geom_Curve.hxx>
+#include <Geom_CylindricalSurface.hxx>
#include <Geom_Plane.hxx>
+#include <Geom2d_TrimmedCurve.hxx>
#include <gp_Trsf.hxx>
#include <gp_Pnt.hxx>
if (!hasValidSolution) {
Standard_ConstructionError::Raise("Projection aborted : no projection");
}
+ } else if (aType == PROJECTION_ON_CYLINDER) {
+ GEOMImpl_IProjOnCyl aProj (aFunction);
+ Handle(GEOM_Function) aShapeFunction = aProj.GetShape();
+
+ if (aShapeFunction.IsNull()) {
+ return 0;
+ }
+
+ TopoDS_Shape aShape = aShapeFunction->GetValue();
+
+ if (aShape.IsNull()) {
+ return 0;
+ }
+
+ // Get the face.
+ const TopAbs_ShapeEnum aType = aShape.ShapeType();
+ const Standard_Real aRadius = aProj.GetRadius();
+ const Standard_Real aStartAngle = aProj.GetStartAngle();
+ const Standard_Real aLengthAngle = aProj.GetAngleLength();
+
+ if (aType != TopAbs_WIRE && aType != TopAbs_FACE) {
+ return 0;
+ }
+
+ if (aRadius <= Precision::Confusion()) {
+ return 0;
+ }
+
+ TopoDS_Shape aProjShape =
+ projectOnCylinder(aShape, aRadius, aStartAngle, aLengthAngle);
+
+ if (aProjShape.IsNull()) {
+ return 0;
+ }
+
+ aFunction->SetValue(aProjShape);
}
return 1;
AddParam(theParams, "Point", aProj.GetPoint());
AddParam(theParams, "Shape", aProj.GetShape());
+ break;
+ }
+ case PROJECTION_ON_CYLINDER:
+ {
+ GEOMImpl_IProjOnCyl aProj (function);
+ const Standard_Real aLengthAngle = aProj.GetAngleLength();
+
+ AddParam(theParams, "Shape", aProj.GetShape());
+ AddParam(theParams, "Radius", aProj.GetRadius());
+ AddParam(theParams, "Start angle", aProj.GetStartAngle());
+
+ if (aLengthAngle >= 0.) {
+ AddParam(theParams, "Length angle", aLengthAngle);
+ }
+
break;
}
default:
return true;
}
+//================================================================================
+/*!
+ * \brief Performs projection of a planar wire or a face on a cylinder.
+ */
+//================================================================================
+
+TopoDS_Shape GEOMImpl_ProjectionDriver::projectOnCylinder
+ (const TopoDS_Shape &theShape,
+ const Standard_Real theRadius,
+ const Standard_Real theStartAngle,
+ const Standard_Real theAngleLength) const
+{
+ TopoDS_Shape aResult;
+
+ // Get the face.
+ const TopAbs_ShapeEnum aType = theShape.ShapeType();
+ TopoDS_Face aFace;
+
+ if (aType == TopAbs_WIRE) {
+ // Try to create a planar face.
+ TopoDS_Wire aWire = TopoDS::Wire(theShape);
+ BRepBuilderAPI_MakeFace aMkFace(aWire, Standard_True);
+
+ if (aMkFace.IsDone()) {
+ aFace = aMkFace.Face();
+ } else {
+ // Check if the wire is a straight line.
+ TopExp_Explorer anEExp(aWire, TopAbs_EDGE);
+ TopoDS_Edge anEdge;
+
+ for (; anEExp.More(); anEExp.Next()) {
+ anEdge = TopoDS::Edge(anEExp.Current());
+
+ if (!BRep_Tool::Degenerated(anEdge)) {
+ break;
+ }
+ }
+
+ if (anEExp.More()) {
+ // Not degenerated edge found. Try to create a plane.
+ Standard_Real aPar[2];
+ Handle(Geom_Curve) aCurve = BRep_Tool::Curve(anEdge, aPar[0], aPar[1]);
+ gp_Pnt aP0 = aCurve->Value(aPar[0]);
+ gp_Pnt aP1 = aCurve->Value(0.5*(aPar[1] + aPar[0]));
+ gp_Vec aX(aP1.XYZ().Subtracted(aP0.XYZ()));
+ Standard_Real aTolConf = Precision::Confusion();
+
+ if (aX.Magnitude() > aTolConf) {
+ aX.Normalize();
+
+ // Get the plane normal ortogonal to Z axis.
+ gp_Vec aZ(0., 0., 1.);
+ gp_Vec aN = aX.Crossed(aZ);
+
+ if (aN.Magnitude() <= aTolConf) {
+ // aX is parallel to aZ. Get the plane normal ortogonal to Y axis.
+ gp_Vec aY(0., 1., 0.);
+
+ aN = aX.Crossed(aY);
+ }
+
+ if (aN.Magnitude() > aTolConf) {
+ gp_Ax3 anAxis(aP0, gp_Dir(aN), gp_Dir(aX));
+ Handle(Geom_Plane) aPlane = new Geom_Plane(anAxis);
+ BRepBuilderAPI_MakeFace aMkFace(aPlane, aWire);
+
+ if (aMkFace.IsDone()) {
+ aFace = aMkFace.Face();
+ }
+ }
+ }
+ }
+ }
+ } else if (aType == TopAbs_FACE) {
+ aFace = TopoDS::Face(theShape);
+ }
+
+ if (aFace.IsNull()) {
+ return aResult;
+ }
+
+ // Compute 2d translation transformation.
+ TopoDS_Wire anOuterWire = BRepTools::OuterWire(aFace);
+ Standard_Real aU[2];
+ Standard_Real aV[2];
+ BRepTools_WireExplorer aOWExp(anOuterWire, aFace);
+
+ if (!aOWExp.More()) {
+ // NEVERREACHED
+ return aResult;
+ }
+
+ // Compute anisotropic transformation from a face's 2d space
+ // to cylinder's 2d space.
+ BRepTools::UVBounds(aFace, anOuterWire, aU[0], aU[1], aV[0], aV[1]);
+
+ TopoDS_Vertex aFirstVertex = aOWExp.CurrentVertex();
+ TopoDS_Edge aFirstEdge = aOWExp.Current();
+ gp_Pnt aPnt = BRep_Tool::Pnt(aFirstVertex);
+ BRepAdaptor_Curve2d anAdaptorCurve(aFirstEdge, aFace);
+ Standard_Real aParam =
+ BRep_Tool::Parameter(aFirstVertex, aFirstEdge, aFace);
+ gp_Pnt2d aPntUV = anAdaptorCurve.Value(aParam);
+
+ GEOMUtils::Trsf2d aTrsf2d
+ (1./theRadius, 0., theStartAngle - aU[0]/theRadius,
+ 0., 1., aPnt.Z() - 0.5*(aV[1] - aV[0]) - aPntUV.Y());
+
+ // Compute scaling trsf.
+ const Standard_Boolean isToScale = theAngleLength >= Precision::Angular();
+ gp_Trsf2d aScaleTrsf;
+
+ if (isToScale) {
+ // Perform 2d scaling.
+ gp_Pnt2d aMidPnt(0.5*(aU[1] + aU[0]), 0.5*(aV[1] + aV[0]));
+ const Standard_Real aScaleFactor = theAngleLength*theRadius/(aU[1] - aU[0]);
+
+ aTrsf2d.TransformD0(aMidPnt);
+
+ aScaleTrsf.SetScale(aMidPnt, aScaleFactor);
+ }
+
+ // Get 2d presentation of a face.
+ Handle(Geom_Surface) aCylinder =
+ new Geom_CylindricalSurface(gp_Ax3(), theRadius);
+ GeomAdaptor_Surface aGACyl(aCylinder);
+ TopExp_Explorer anExp(aFace, TopAbs_WIRE);
+ Standard_Real aPar[2];
+ TopTools_ListOfShape aWires;
+ Standard_Real aUResol = aGACyl.UResolution(Precision::Confusion());
+ Standard_Real aVResol = aGACyl.VResolution(Precision::Confusion());
+
+ for (; anExp.More(); anExp.Next()) {
+ TopoDS_Wire aWire = TopoDS::Wire(anExp.Current());
+ BRepTools_WireExplorer aWExp(aWire, aFace);
+ BRepBuilderAPI_MakeWire aMkWire;
+
+ for (; aWExp.More(); aWExp.Next()) {
+ TopoDS_Edge anEdge = aWExp.Current();
+ Handle(Geom2d_Curve) aCurve =
+ BRep_Tool::CurveOnSurface(anEdge, aFace, aPar[0], aPar[1]);
+
+ if (aCurve.IsNull()) {
+ continue;
+ }
+
+ // Transform the curve to cylinder's parametric space.
+ GEOMUtils::Handle(HTrsfCurve2d) aTrsfCurve =
+ new GEOMUtils::HTrsfCurve2d(aCurve, aPar[0], aPar[1], aTrsf2d);
+ Approx_Curve2d aConv (aTrsfCurve, aPar[0], aPar[1],
+ aUResol, aVResol, GeomAbs_C1,
+ 9, 1000);
+
+ if (!aConv.IsDone() && !aConv.HasResult()) {
+ return aResult;
+ }
+
+ Handle(Geom2d_Curve) aCylCurve = aConv.Curve();
+
+ if (isToScale) {
+ aCylCurve->Transform(aScaleTrsf);
+ }
+
+ // Create edge and add it to the wire.
+ BRepBuilderAPI_MakeEdge aMkEdge(aCylCurve, aCylinder);
+
+ if (!aMkEdge.IsDone()) {
+ return aResult;
+ }
+
+ aMkWire.Add(aMkEdge.Edge());
+
+ if (!aMkWire.IsDone()) {
+ return aResult;
+ }
+ }
+
+ if (aWire.IsSame(anOuterWire)) {
+ // Make the outer wire first.
+ aWires.Prepend(aMkWire.Wire());
+ } else {
+ aWires.Append(aMkWire.Wire());
+ }
+ }
+
+ // Create a face.
+ if (aWires.IsEmpty()) {
+ return aResult;
+ }
+
+ TopTools_ListIteratorOfListOfShape aWIter(aWires);
+ TopoDS_Wire aWire = TopoDS::Wire(aWIter.Value());
+ BRepBuilderAPI_MakeFace aMkFace(aCylinder, aWire);
+
+ if (!aMkFace.IsDone()) {
+ return aResult;
+ }
+
+ for (aWIter.Next(); aWIter.More(); aWIter.Next()) {
+ aWire = TopoDS::Wire(aWIter.Value());
+ aMkFace.Add(aWire);
+
+ if (!aMkFace.IsDone()) {
+ return aResult;
+ }
+ }
+
+ // Build 3D curves.
+ TopoDS_Face aCylFace = aMkFace.Face();
+ TopoDS_Shape aResShape;
+
+ BRepLib::BuildCurves3d(aCylFace);
+
+ // Check shape.
+ if (aType == TopAbs_WIRE) {
+ TopExp_Explorer aResExp(aCylFace, TopAbs_WIRE);
+
+ if (aResExp.More()) {
+ aResShape = aResExp.Current();
+ }
+ } else {
+ aResShape = aCylFace;
+ }
+
+ if (aResShape.IsNull() == Standard_False) {
+ if (!GEOMUtils::CheckShape(aResShape, true)) {
+ if (!GEOMUtils::FixShapeTolerance(aResShape)) {
+ return aResult;
+ }
+ }
+
+ aResult = aResShape;
+ }
+
+ return aResult;
+}
+
IMPLEMENT_STANDARD_HANDLE (GEOMImpl_ProjectionDriver,GEOM_BaseDriver);
IMPLEMENT_STANDARD_RTTIEXT (GEOMImpl_ProjectionDriver,GEOM_BaseDriver);
