//  Copyright (C) 2007-2010  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.
//
//  This library is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
//  Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with this library; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
//
//  See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com

#include <GEOMImpl_PrismDriver.hxx>

#include <GEOMImpl_IPrism.hxx>
#include <GEOMImpl_IShapesOperations.hxx>
#include <GEOMImpl_IMeasureOperations.hxx>
#include <GEOMImpl_PipeDriver.hxx>
#include <GEOMImpl_Types.hxx>
#include <GEOM_Function.hxx>

#include <BRepPrimAPI_MakePrism.hxx>
#include <BRepBuilderAPI_MakeEdge.hxx>
#include <BRepBuilderAPI_MakeWire.hxx>
#include <BRepBuilderAPI_MakeVertex.hxx>
#include <BRepBuilderAPI_Transform.hxx>
#include <BRep_Tool.hxx>

#include <TopAbs.hxx>
#include <TopExp.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Shape.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Vertex.hxx>
#include <TopTools_HSequenceOfShape.hxx>
#include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>

#include <Precision.hxx>
#include <gp_Ax3.hxx>
#include <gp_Pnt.hxx>
#include <gp_Vec.hxx>
#include <gp_Trsf.hxx>

#include <Standard_Stream.hxx>

#include <Standard_ConstructionError.hxx>

//=======================================================================
//function : GetID
//purpose  :
//=======================================================================
const Standard_GUID& GEOMImpl_PrismDriver::GetID()
{
  static Standard_GUID aPrismDriver("FF1BBB17-5D14-4df2-980B-3A668264EA16");
  return aPrismDriver;
}


//=======================================================================
//function : GEOMImpl_PrismDriver
//purpose  :
//=======================================================================
GEOMImpl_PrismDriver::GEOMImpl_PrismDriver()
{
}

//=======================================================================
//function : Execute
//purpose  :
//=======================================================================
Standard_Integer GEOMImpl_PrismDriver::Execute(TFunction_Logbook& log) const
{
  if (Label().IsNull()) return 0;
  Handle(GEOM_Function) aFunction = GEOM_Function::GetFunction(Label());

  GEOMImpl_IPrism aCI (aFunction);
  Standard_Integer aType = aFunction->GetType();

  TopoDS_Shape aShape;

  if (aType == PRISM_BASE_VEC_H || aType == PRISM_BASE_VEC_H_2WAYS) {
    Handle(GEOM_Function) aRefBase = aCI.GetBase();
    Handle(GEOM_Function) aRefVector = aCI.GetVector();
    TopoDS_Shape aShapeBase = aRefBase->GetValue();
    TopoDS_Shape aShapeVec = aRefVector->GetValue();
    if (aShapeVec.ShapeType() == TopAbs_EDGE) {
      TopoDS_Edge anE = TopoDS::Edge(aShapeVec);
      TopoDS_Vertex V1, V2;
      TopExp::Vertices(anE, V1, V2, Standard_True);
      if (!V1.IsNull() && !V2.IsNull()) {
        gp_Vec aV (BRep_Tool::Pnt(V1), BRep_Tool::Pnt(V2));
        if (Abs(aCI.GetH()) < Precision::Confusion()) {
          Standard_ConstructionError::Raise("Absolute value of prism height is too small");
        }
        if (aV.Magnitude() > Precision::Confusion()) {
          aV.Normalize();
          if (aType != PRISM_BASE_DXDYDZ_2WAYS && aCI.GetScale() > Precision::Confusion()) {
            aShape = MakeScaledPrism(aShapeBase, aV * aCI.GetH(), aCI.GetScale());
          }
          else {
            if (aType == PRISM_BASE_VEC_H_2WAYS) {
              gp_Trsf aTrsf;
              aTrsf.SetTranslation((-aV) * aCI.GetH());
              BRepBuilderAPI_Transform aTransformation(aShapeBase, aTrsf, Standard_False);
              aShapeBase = aTransformation.Shape();
              aCI.SetH(aCI.GetH()*2);
            }
            aShape = BRepPrimAPI_MakePrism(aShapeBase, aV * aCI.GetH(), Standard_False).Shape();
          }
        }
      }
    }
  } else if (aType == PRISM_BASE_TWO_PNT || aType == PRISM_BASE_TWO_PNT_2WAYS) {
    Handle(GEOM_Function) aRefBase = aCI.GetBase();
    Handle(GEOM_Function) aRefPnt1 = aCI.GetFirstPoint();
    Handle(GEOM_Function) aRefPnt2 = aCI.GetLastPoint();
    TopoDS_Shape aShapeBase = aRefBase->GetValue();
    TopoDS_Shape aShapePnt1 = aRefPnt1->GetValue();
    TopoDS_Shape aShapePnt2 = aRefPnt2->GetValue();
    if (aShapePnt1.ShapeType() == TopAbs_VERTEX &&
        aShapePnt2.ShapeType() == TopAbs_VERTEX) {
      TopoDS_Vertex V1 = TopoDS::Vertex(aShapePnt1);
      TopoDS_Vertex V2 = TopoDS::Vertex(aShapePnt2);
      if (!V1.IsNull() && !V2.IsNull()) {
        gp_Vec aV (BRep_Tool::Pnt(V1), BRep_Tool::Pnt(V2));
        if (aV.Magnitude() > gp::Resolution()) {
          if (aType != PRISM_BASE_DXDYDZ_2WAYS && aCI.GetScale() > Precision::Confusion()) {
            aShape = MakeScaledPrism(aShapeBase, aV, aCI.GetScale());
          }
          else {
            if (aType == PRISM_BASE_TWO_PNT_2WAYS) {
              gp_Trsf aTrsf;
              aTrsf.SetTranslation(-aV);
              BRepBuilderAPI_Transform aTransformation(aShapeBase, aTrsf, Standard_False);
              aShapeBase = aTransformation.Shape();
              aV = aV * 2;
            }
            aShape = BRepPrimAPI_MakePrism(aShapeBase, aV, Standard_False).Shape();
          }
        }
      }
    }
  } else if (aType == PRISM_BASE_DXDYDZ || aType == PRISM_BASE_DXDYDZ_2WAYS) {
    Handle(GEOM_Function) aRefBase = aCI.GetBase();
    TopoDS_Shape aShapeBase = aRefBase->GetValue();
    gp_Vec aV (aCI.GetDX(), aCI.GetDY(), aCI.GetDZ());
    if (aV.Magnitude() > gp::Resolution()) {
      if (aType != PRISM_BASE_DXDYDZ_2WAYS && aCI.GetScale() > Precision::Confusion()) {
        aShape = MakeScaledPrism(aShapeBase, aV, aCI.GetScale());
      }
      else {
        if (aType == PRISM_BASE_DXDYDZ_2WAYS) {
          gp_Trsf aTrsf;
          aTrsf.SetTranslation(-aV);
          BRepBuilderAPI_Transform aTransformation(aShapeBase, aTrsf, Standard_False);
          aShapeBase = aTransformation.Shape();
          aV = aV * 2;
        }
        aShape = BRepPrimAPI_MakePrism(aShapeBase, aV, Standard_False).Shape();
      }
    }
  }

  if (aShape.IsNull()) return 0;

  TopoDS_Shape aRes = GEOMImpl_IShapesOperations::CompsolidToCompound(aShape);
  aFunction->SetValue(aRes);

  log.SetTouched(Label());

  return 1;
}

//=======================================================================
//function : MakeScaledPrism
//purpose  :
//=======================================================================
TopoDS_Shape GEOMImpl_PrismDriver::MakeScaledPrism (const TopoDS_Shape& theShapeBase,
                                                    const gp_Vec&       theVector,
                                                    const Standard_Real theScaleFactor)
{
  TopoDS_Shape aShape;

  // 1. aCDG = geompy.MakeCDG(theBase)
  gp_Ax3 aPos = GEOMImpl_IMeasureOperations::GetPosition(theShapeBase);
  gp_Pnt aCDG = aPos.Location();
  TopoDS_Shape aShapeCDG_1 = BRepBuilderAPI_MakeVertex(aCDG).Shape();

  // 2. Scale = geompy.MakeScaleTransform(theBase, aCDG, theScaleFactor)

  // Bug 6839: Check for standalone (not included in faces) degenerated edges
  TopTools_IndexedDataMapOfShapeListOfShape aEFMap;
  TopExp::MapShapesAndAncestors(theShapeBase, TopAbs_EDGE, TopAbs_FACE, aEFMap);
  Standard_Integer i, nbE = aEFMap.Extent();
  for (i = 1; i <= nbE; i++) {
    TopoDS_Shape anEdgeSh = aEFMap.FindKey(i);
    if (BRep_Tool::Degenerated(TopoDS::Edge(anEdgeSh))) {
      const TopTools_ListOfShape& aFaces = aEFMap.FindFromIndex(i);
      if (aFaces.IsEmpty())
        Standard_ConstructionError::Raise
          ("Scaling aborted : cannot scale standalone degenerated edge");
    }
  }

  // Perform Scaling
  gp_Trsf aTrsf;
  aTrsf.SetScale(aCDG, theScaleFactor);
  BRepBuilderAPI_Transform aBRepTrsf (theShapeBase, aTrsf, Standard_False);
  TopoDS_Shape aScale = aBRepTrsf.Shape();

  // 3. aBase2 = geompy.MakeTranslationVectorDistance(Scale, theVec, theH)
  gp_Trsf aTrsf3;
  aTrsf3.SetTranslation(theVector);
  TopLoc_Location aLocOrig = aScale.Location();
  gp_Trsf aTrsfOrig = aLocOrig.Transformation();
  TopLoc_Location aLocRes (aTrsf3 * aTrsfOrig);
  TopoDS_Shape aBase2 = aScale.Located(aLocRes);

  // 4. aCDG_2 = geompy.MakeTranslationVectorDistance(aCDG, theVec, theH)
  gp_Pnt aCDG_2 = aCDG.Translated(theVector);
  TopoDS_Shape aShapeCDG_2 = BRepBuilderAPI_MakeVertex(aCDG_2).Shape();

  // 5. Vector = geompy.MakeVector(aCDG, aCDG_2)
  TopoDS_Shape aShapeVec = BRepBuilderAPI_MakeEdge(aCDG, aCDG_2).Shape();
  TopoDS_Edge anEdge = TopoDS::Edge(aShapeVec);
  TopoDS_Wire aWirePath = BRepBuilderAPI_MakeWire(anEdge);

  // 6. aPrism = geompy.MakePipeWithDifferentSections([theBase, aBase2], [aCDG, aCDG_2], Vector, False, False)
  Handle(TopTools_HSequenceOfShape) aBases = new TopTools_HSequenceOfShape;
  aBases->Append(theShapeBase);
  aBases->Append(aBase2);

  Handle(TopTools_HSequenceOfShape) aLocs = new TopTools_HSequenceOfShape;
  aLocs->Append(aShapeCDG_1);
  aLocs->Append(aShapeCDG_2);

  aShape = GEOMImpl_PipeDriver::CreatePipeWithDifferentSections(aWirePath, aBases, aLocs, false, false);
  return aShape;
}

//=======================================================================
//function : GEOMImpl_PrismDriver_Type_
//purpose  :
//=======================================================================
Standard_EXPORT Handle_Standard_Type& GEOMImpl_PrismDriver_Type_()
{

  static Handle_Standard_Type aType1 = STANDARD_TYPE(TFunction_Driver);
  if (aType1.IsNull()) aType1 = STANDARD_TYPE(TFunction_Driver);
  static Handle_Standard_Type aType2 = STANDARD_TYPE(MMgt_TShared);
  if (aType2.IsNull()) aType2 = STANDARD_TYPE(MMgt_TShared);
  static Handle_Standard_Type aType3 = STANDARD_TYPE(Standard_Transient);
  if (aType3.IsNull()) aType3 = STANDARD_TYPE(Standard_Transient);

  static Handle_Standard_Transient _Ancestors[]= {aType1,aType2,aType3,NULL};
  static Handle_Standard_Type _aType = new Standard_Type("GEOMImpl_PrismDriver",
                                                         sizeof(GEOMImpl_PrismDriver),
                                                         1,
                                                         (Standard_Address)_Ancestors,
                                                         (Standard_Address)NULL);

  return _aType;
}

//=======================================================================
//function : DownCast
//purpose  :
//=======================================================================
const Handle(GEOMImpl_PrismDriver) Handle(GEOMImpl_PrismDriver)::DownCast(const Handle(Standard_Transient)& AnObject)
{
  Handle(GEOMImpl_PrismDriver) _anOtherObject;

  if (!AnObject.IsNull()) {
     if (AnObject->IsKind(STANDARD_TYPE(GEOMImpl_PrismDriver))) {
       _anOtherObject = Handle(GEOMImpl_PrismDriver)((Handle(GEOMImpl_PrismDriver)&)AnObject);
     }
  }

  return _anOtherObject;
}