G4ReflectedSolid.cc

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//
//
// $Id$
//
//
// Implementation for G4ReflectedSolid class for boolean 
// operations between other solids
//
// Author: Vladimir Grichine, 23.07.01  (Vladimir.Grichine@cern.ch)
//
// --------------------------------------------------------------------

#include "G4ReflectedSolid.hh"

#include <sstream>

#include "G4Point3D.hh"
#include "G4Normal3D.hh"

#include "G4VoxelLimits.hh"

#include "G4VPVParameterisation.hh"

#include "G4VGraphicsScene.hh"
#include "G4Polyhedron.hh"
#include "G4NURBS.hh"
// #include "G4NURBSbox.hh"


//
// Constructor using HepTransform3D, in fact HepReflect3D

G4ReflectedSolid::G4ReflectedSolid( const G4String& pName,
                                          G4VSolid* pSolid ,
                                    const G4Transform3D& transform  )
  : G4VSolid(pName), fpPolyhedron(0)
{
  fPtrSolid = pSolid ;
  G4RotationMatrix rotMatrix ;
  
  fDirectTransform =
     new G4AffineTransform(rotMatrix, transform.getTranslation()) ;  
  fPtrTransform    =
     new G4AffineTransform(rotMatrix, transform.getTranslation()) ; 
  fPtrTransform->Invert() ;

  fDirectTransform3D = new G4Transform3D(transform) ;
  fPtrTransform3D    = new G4Transform3D(transform.inverse()) ;   
}

//

G4ReflectedSolid::~G4ReflectedSolid() 
{
  if(fPtrTransform)
  {
    delete fPtrTransform; fPtrTransform=0;
    delete fDirectTransform; fDirectTransform=0;
  }
  if(fPtrTransform3D)
  {
    delete fPtrTransform3D; fPtrTransform3D=0;
    delete fDirectTransform3D; fDirectTransform3D=0;
  }
  delete fpPolyhedron;
}

//

G4ReflectedSolid::G4ReflectedSolid(const G4ReflectedSolid& rhs)
  : G4VSolid(rhs), fPtrSolid(rhs.fPtrSolid), fpPolyhedron(0)
{
  fPtrTransform      = new G4AffineTransform(*rhs.fPtrTransform);
  fDirectTransform   = new G4AffineTransform(*rhs.fDirectTransform);
  fPtrTransform3D    = new G4Transform3D(*rhs.fPtrTransform3D);
  fDirectTransform3D = new G4Transform3D(*rhs.fDirectTransform3D);
}

//

G4ReflectedSolid& G4ReflectedSolid::operator=(const G4ReflectedSolid& rhs)
{
  // Check assignment to self
  //
  if (this == &rhs)  { return *this; }

  // Copy base class data
  //
  G4VSolid::operator=(rhs);

  // Copy data
  //
  fPtrSolid= rhs.fPtrSolid; fpPolyhedron= 0;
  delete fPtrTransform;
  fPtrTransform= new G4AffineTransform(*rhs.fPtrTransform);
  delete fDirectTransform;
  fDirectTransform= new G4AffineTransform(*rhs.fDirectTransform);
  delete fPtrTransform3D;
  fPtrTransform3D= new G4Transform3D(*rhs.fPtrTransform3D);
  delete fDirectTransform3D;
  fDirectTransform3D= new G4Transform3D(*rhs.fDirectTransform3D);

  return *this;
}

//

G4GeometryType G4ReflectedSolid::GetEntityType() const 
{
  return G4String("G4ReflectedSolid");
}

const G4ReflectedSolid* G4ReflectedSolid::GetReflectedSolidPtr() const   
{
  return this;
}

G4ReflectedSolid* G4ReflectedSolid::GetReflectedSolidPtr() 
{
  return this;
}

G4VSolid* G4ReflectedSolid::GetConstituentMovedSolid() const
{ 
  return fPtrSolid; 
} 


G4AffineTransform  G4ReflectedSolid::GetTransform() const
{
   G4AffineTransform aTransform = *fPtrTransform;
   return aTransform;
}

void G4ReflectedSolid::SetTransform(G4AffineTransform& transform) 
{
   fPtrTransform = &transform ;
   fpPolyhedron = 0;
}


G4AffineTransform  G4ReflectedSolid::GetDirectTransform() const
{
  G4AffineTransform aTransform= *fDirectTransform;
  return aTransform;
}

void G4ReflectedSolid::SetDirectTransform(G4AffineTransform& transform) 
{
  fDirectTransform = &transform ;
  fpPolyhedron = 0;
}


G4Transform3D  G4ReflectedSolid::GetTransform3D() const
{
  G4Transform3D aTransform = *fPtrTransform3D;
  return aTransform;
}

void G4ReflectedSolid::SetTransform3D(G4Transform3D& transform) 
{
  fPtrTransform3D = &transform ;
  fpPolyhedron = 0;
}


G4Transform3D  G4ReflectedSolid::GetDirectTransform3D() const
{
  G4Transform3D aTransform= *fDirectTransform3D;
  return aTransform;
}

void G4ReflectedSolid::SetDirectTransform3D(G4Transform3D& transform) 
{
  fDirectTransform3D = &transform ;
  fpPolyhedron = 0;
}


G4RotationMatrix G4ReflectedSolid::GetFrameRotation() const
{
  G4RotationMatrix InvRotation= fDirectTransform->NetRotation();
  return InvRotation;
}

void G4ReflectedSolid::SetFrameRotation(const G4RotationMatrix& matrix)
{
  fDirectTransform->SetNetRotation(matrix);
}


G4ThreeVector  G4ReflectedSolid::GetFrameTranslation() const
{
  return fPtrTransform->NetTranslation();
}

void G4ReflectedSolid::SetFrameTranslation(const G4ThreeVector& vector)
{
  fPtrTransform->SetNetTranslation(vector);
}


G4RotationMatrix G4ReflectedSolid::GetObjectRotation() const
{
  G4RotationMatrix Rotation= fPtrTransform->NetRotation();
  return Rotation;
}

void G4ReflectedSolid::SetObjectRotation(const G4RotationMatrix& matrix)
{
  fPtrTransform->SetNetRotation(matrix);
}


G4ThreeVector  G4ReflectedSolid::GetObjectTranslation() const
{
  return fDirectTransform->NetTranslation();
}

void G4ReflectedSolid::SetObjectTranslation(const G4ThreeVector& vector)
{
  fDirectTransform->SetNetTranslation(vector);
}

//
//
     
G4bool 
G4ReflectedSolid::CalculateExtent( const EAxis pAxis,
                                   const G4VoxelLimits& pVoxelLimit,
                                   const G4AffineTransform& pTransform,
                                         G4double& pMin, 
                                         G4double& pMax           ) const 
{

  G4VoxelLimits unLimit;
  G4AffineTransform unTransform;

  G4double x1 = -kInfinity, x2 = kInfinity,
           y1 = -kInfinity, y2 = kInfinity,
           z1 = -kInfinity, z2 = kInfinity;

  G4bool existsAfterClip = false ;
  existsAfterClip =
      fPtrSolid->CalculateExtent(kXAxis,unLimit,unTransform,x1,x2);
  existsAfterClip =
      fPtrSolid->CalculateExtent(kYAxis,unLimit,unTransform,y1,y2);
  existsAfterClip =
      fPtrSolid->CalculateExtent(kZAxis,unLimit,unTransform,z1,z2);

  existsAfterClip = false;
  pMin = +kInfinity ;
  pMax = -kInfinity ;

  G4Transform3D pTransform3D = G4Transform3D(pTransform.NetRotation().inverse(),
                                             pTransform.NetTranslation());
 
  G4Transform3D transform3D  = pTransform3D*(*fDirectTransform3D);

  G4Point3D tmpPoint;

  // Calculate rotated vertex coordinates

  G4ThreeVectorList* vertices = new G4ThreeVectorList();

  if (vertices)
  {
    vertices->reserve(8);

    G4ThreeVector vertex0(x1,y1,z1) ;
    tmpPoint    = transform3D*G4Point3D(vertex0);
    vertex0     = G4ThreeVector(tmpPoint.x(),tmpPoint.y(),tmpPoint.z());
    vertices->push_back(vertex0);

    G4ThreeVector vertex1(x2,y1,z1) ;
    tmpPoint    = transform3D*G4Point3D(vertex1);
    vertex1     = G4ThreeVector(tmpPoint.x(),tmpPoint.y(),tmpPoint.z());
    vertices->push_back(vertex1);

    G4ThreeVector vertex2(x2,y2,z1) ;
    tmpPoint    = transform3D*G4Point3D(vertex2);
    vertex2     = G4ThreeVector(tmpPoint.x(),tmpPoint.y(),tmpPoint.z());
    vertices->push_back(vertex2);

    G4ThreeVector vertex3(x1,y2,z1) ;
    tmpPoint    = transform3D*G4Point3D(vertex3);
    vertex3     = G4ThreeVector(tmpPoint.x(),tmpPoint.y(),tmpPoint.z());
    vertices->push_back(vertex3);

    G4ThreeVector vertex4(x1,y1,z2) ;
    tmpPoint    = transform3D*G4Point3D(vertex4);
    vertex4     = G4ThreeVector(tmpPoint.x(),tmpPoint.y(),tmpPoint.z());
    vertices->push_back(vertex4);

    G4ThreeVector vertex5(x2,y1,z2) ;
    tmpPoint    = transform3D*G4Point3D(vertex5);
    vertex5     = G4ThreeVector(tmpPoint.x(),tmpPoint.y(),tmpPoint.z());
    vertices->push_back(vertex5);

    G4ThreeVector vertex6(x2,y2,z2) ;
    tmpPoint    = transform3D*G4Point3D(vertex6);
    vertex6     = G4ThreeVector(tmpPoint.x(),tmpPoint.y(),tmpPoint.z());
    vertices->push_back(vertex6);

    G4ThreeVector vertex7(x1,y2,z2) ;
    tmpPoint    = transform3D*G4Point3D(vertex7);
    vertex7     = G4ThreeVector(tmpPoint.x(),tmpPoint.y(),tmpPoint.z());
    vertices->push_back(vertex7);
  }
  else
  {
    DumpInfo();
    G4Exception("G4ReflectedSolid::CalculateExtent()",
                "GeomMgt0003", FatalException,
                "Error in allocation of vertices. Out of memory !");
  }
  
  ClipCrossSection(vertices,0,pVoxelLimit,pAxis,pMin,pMax) ;
  ClipCrossSection(vertices,4,pVoxelLimit,pAxis,pMin,pMax) ;
  ClipBetweenSections(vertices,0,pVoxelLimit,pAxis,pMin,pMax) ;

    if (pVoxelLimit.IsLimited(pAxis) == false) 
    {  
      if ( pMin != kInfinity || pMax != -kInfinity ) 
      {
        existsAfterClip = true ;

        // Add 2*tolerance to avoid precision troubles

        pMin           -= kCarTolerance;
        pMax           += kCarTolerance;
      }
    }      
    else
    {
      G4ThreeVector clipCentre(
         ( pVoxelLimit.GetMinXExtent()+pVoxelLimit.GetMaxXExtent())*0.5,
         ( pVoxelLimit.GetMinYExtent()+pVoxelLimit.GetMaxYExtent())*0.5,
         ( pVoxelLimit.GetMinZExtent()+pVoxelLimit.GetMaxZExtent())*0.5);

      if ( pMin != kInfinity || pMax != -kInfinity )
      {
        existsAfterClip = true ;
  

        // Check to see if endpoints are in the solid

        clipCentre(pAxis) = pVoxelLimit.GetMinExtent(pAxis);

        if (Inside(transform3D.inverse()*G4Point3D(clipCentre)) != kOutside)
        {
          pMin = pVoxelLimit.GetMinExtent(pAxis);
        }
        else
        {
          pMin -= kCarTolerance;
        }
        clipCentre(pAxis) = pVoxelLimit.GetMaxExtent(pAxis);

        if (Inside(transform3D.inverse()*G4Point3D(clipCentre)) != kOutside)
        {
          pMax = pVoxelLimit.GetMaxExtent(pAxis);
        }
        else
        {
          pMax += kCarTolerance;
        }
      }
      // Check for case where completely enveloping clipping volume
      // If point inside then we are confident that the solid completely
      // envelopes the clipping volume. Hence set min/max extents according
      // to clipping volume extents along the specified axis.
        
    else if (Inside(transform3D.inverse()*G4Point3D(clipCentre)) != kOutside)
    {
      existsAfterClip = true ;
      pMin            = pVoxelLimit.GetMinExtent(pAxis) ;
      pMax            = pVoxelLimit.GetMaxExtent(pAxis) ;
    }
  } 
  delete vertices;
  return existsAfterClip;
}
 
//
// 

EInside G4ReflectedSolid::Inside(const G4ThreeVector& p) const
{

  G4Point3D newPoint = (*fDirectTransform3D)*G4Point3D(p) ;
  // G4Point3D newPoint = (*fPtrTransform3D)*G4Point3D(p) ;

  return fPtrSolid->Inside(G4ThreeVector(newPoint.x(),
                                         newPoint.y(),
                                         newPoint.z())) ; 
}

//
//

G4ThreeVector 
G4ReflectedSolid::SurfaceNormal( const G4ThreeVector& p ) const 
{
  G4Point3D newPoint = (*fDirectTransform3D)*G4Point3D(p) ;
  G4ThreeVector normal =
      fPtrSolid->SurfaceNormal(G4ThreeVector(newPoint.x(),
                                             newPoint.y(),
                                             newPoint.z() ) ) ;
  G4Point3D newN = (*fDirectTransform3D)*G4Point3D(normal) ;
  newN.unit() ;

  return G4ThreeVector(newN.x(),newN.y(),newN.z()) ;    
}

//
// The same algorithm as in DistanceToIn(p)

G4double 
G4ReflectedSolid::DistanceToIn( const G4ThreeVector& p,
                                   const G4ThreeVector& v  ) const 
{    
  G4Point3D newPoint     = (*fDirectTransform3D)*G4Point3D(p) ;
  G4Point3D newDirection = (*fDirectTransform3D)*G4Point3D(v) ;
  newDirection.unit() ;
  return fPtrSolid->DistanceToIn(
       G4ThreeVector(newPoint.x(),newPoint.y(),newPoint.z()),
       G4ThreeVector(newDirection.x(),newDirection.y(),newDirection.z())) ;   
}

//
// Approximate nearest distance from the point p to the intersection of
// two solids

G4double 
G4ReflectedSolid::DistanceToIn( const G4ThreeVector& p) const 
{
  G4Point3D newPoint = (*fDirectTransform3D)*G4Point3D(p) ;
  return fPtrSolid->DistanceToIn(
                    G4ThreeVector(newPoint.x(),newPoint.y(),newPoint.z())) ;   
}

//
// The same algorithm as DistanceToOut(p)

G4double 
G4ReflectedSolid::DistanceToOut( const G4ThreeVector& p,
                                 const G4ThreeVector& v,
                                 const G4bool calcNorm,
                                       G4bool *validNorm,
                                       G4ThreeVector *n      ) const 
{
  G4ThreeVector solNorm ; 

  G4Point3D newPoint     = (*fDirectTransform3D)*G4Point3D(p) ;
  G4Point3D newDirection = (*fDirectTransform3D)*G4Point3D(v);
  newDirection.unit() ;

  G4double dist =
    fPtrSolid->DistanceToOut(
              G4ThreeVector(newPoint.x(),newPoint.y(),newPoint.z()),
              G4ThreeVector(newDirection.x(),newDirection.y(),newDirection.z()),
              calcNorm, validNorm, &solNorm) ;
  if(calcNorm)
  { 
    G4Point3D newN = (*fDirectTransform3D)*G4Point3D(solNorm);
    newN.unit() ;
    *n = G4ThreeVector(newN.x(),newN.y(),newN.z());
  }
  return dist ;  
}

//
// Inverted algorithm of DistanceToIn(p)

G4double 
G4ReflectedSolid::DistanceToOut( const G4ThreeVector& p ) const 
{
  G4Point3D newPoint = (*fDirectTransform3D)*G4Point3D(p);
  return fPtrSolid->DistanceToOut(
                    G4ThreeVector(newPoint.x(),newPoint.y(),newPoint.z()));   
}

//
//

void 
G4ReflectedSolid::ComputeDimensions(       G4VPVParameterisation*,
                                     const G4int,
                                     const G4VPhysicalVolume* ) 
{
  DumpInfo();
  G4Exception("G4ReflectedSolid::ComputeDimensions()",
               "GeomMgt0001", FatalException,
               "Method not applicable in this context!");
}

//
// Return a point (G4ThreeVector) randomly and uniformly selected
// on the solid surface

G4ThreeVector G4ReflectedSolid::GetPointOnSurface() const
{
  G4ThreeVector p    =  fPtrSolid->GetPointOnSurface();
  G4Point3D newPoint = (*fDirectTransform3D)*G4Point3D(p);

  return G4ThreeVector(newPoint.x(),newPoint.y(),newPoint.z());
}

//
// Make a clone of this object

G4VSolid* G4ReflectedSolid::Clone() const
{
  return new G4ReflectedSolid(*this);
}


//
// Stream object contents to an output stream

std::ostream& G4ReflectedSolid::StreamInfo(std::ostream& os) const
{
  os << "-----------------------------------------------------------\n"
     << "    *** Dump for Reflected solid - " << GetName() << " ***\n"
     << "    ===================================================\n"
     << " Solid type: " << GetEntityType() << "\n"
     << " Parameters of constituent solid: \n"
     << "===========================================================\n";
  fPtrSolid->StreamInfo(os);
  os << "===========================================================\n"
     << " Transformations: \n"
     << "    Direct transformation - translation : \n"
     << "           " << fDirectTransform->NetTranslation() << "\n"
     << "                          - rotation    : \n"
     << "           ";
  fDirectTransform->NetRotation().print(os);
  os << "\n"
     << "===========================================================\n";

  return os;
}

//
//                    

void 
G4ReflectedSolid::DescribeYourselfTo ( G4VGraphicsScene& scene ) const 
{
  scene.AddSolid (*this);
}

//
//

G4Polyhedron* 
G4ReflectedSolid::CreatePolyhedron () const 
{
  G4Polyhedron* polyhedron = fPtrSolid->CreatePolyhedron();
  if (polyhedron)
  {
    polyhedron->Transform(*fDirectTransform3D);
    return polyhedron;
  }
  else
  {
    std::ostringstream message;
    message << "Solid - " << GetName()
            << " - original solid has no" << G4endl
            << "corresponding polyhedron. Returning NULL!";
    G4Exception("G4ReflectedSolid::CreatePolyhedron()",
                "GeomMgt1001", JustWarning, message);
    return 0;
  }
}

//
//

G4NURBS*      
G4ReflectedSolid::CreateNURBS      () const 
{
  // Take into account local transformation - see CreatePolyhedron.
  // return fPtrSolid->CreateNURBS() ;
  return 0;
}

//
//

G4Polyhedron*
G4ReflectedSolid::GetPolyhedron () const
{
  if (!fpPolyhedron ||
      fpPolyhedron->GetNumberOfRotationStepsAtTimeOfCreation() !=
      fpPolyhedron->GetNumberOfRotationSteps())
    {
      delete fpPolyhedron;
      fpPolyhedron = CreatePolyhedron ();
    }
  return fpPolyhedron;
}