G4TwistTrapFlatSide Class Reference

#include <G4TwistTrapFlatSide.hh>

Inheritance diagram for G4TwistTrapFlatSide:

Collaboration diagram for G4TwistTrapFlatSide:

Public Member Functions
	G4TwistTrapFlatSide (const G4String &name, G4double PhiTwist, G4double pDx1, G4double pDx2, G4double pDy, G4double pDz, G4double pAlpha, G4double pPhi, G4double pTheta, G4int handedness)
virtual	~G4TwistTrapFlatSide ()
virtual G4ThreeVector	GetNormal (const G4ThreeVector &, G4bool isGlobal=false)
virtual G4int	DistanceToSurface (const G4ThreeVector &gp, const G4ThreeVector &gv, G4ThreeVector gxx[], G4double distance[], G4int areacode[], G4bool isvalid[], EValidate validate=kValidateWithTol)
virtual G4int	DistanceToSurface (const G4ThreeVector &gp, G4ThreeVector gxx[], G4double distance[], G4int areacode[])
virtual G4ThreeVector	SurfacePoint (G4double x, G4double y, G4bool isGlobal=false)
virtual G4double	GetBoundaryMin (G4double u)
virtual G4double	GetBoundaryMax (G4double u)
virtual G4double	GetSurfaceArea ()
virtual void	GetFacets (G4int m, G4int n, G4double xyz[][3], G4int faces[][4], G4int iside)
	G4TwistTrapFlatSide (__void__ &)
Public Member Functions inherited from G4VTwistSurface
	G4VTwistSurface (const G4String &name)
	G4VTwistSurface (const G4String &name, const G4RotationMatrix &rot, const G4ThreeVector &tlate, G4int handedness, const EAxis axis1, const EAxis axis2, G4double axis0min=-kInfinity, G4double axis1min=-kInfinity, G4double axis0max=kInfinity, G4double axis1max=kInfinity)
virtual	~G4VTwistSurface ()
virtual G4int	AmIOnLeftSide (const G4ThreeVector &me, const G4ThreeVector &vec, G4bool withTol=true)
virtual G4double	DistanceToBoundary (G4int areacode, G4ThreeVector &xx, const G4ThreeVector &p)
virtual G4double	DistanceToIn (const G4ThreeVector &gp, const G4ThreeVector &gv, G4ThreeVector &gxxbest)
virtual G4double	DistanceToOut (const G4ThreeVector &gp, const G4ThreeVector &gv, G4ThreeVector &gxxbest)
virtual G4double	DistanceTo (const G4ThreeVector &gp, G4ThreeVector &gxx)
void	DebugPrint () const
virtual G4String	GetName () const
virtual void	GetBoundaryParameters (const G4int &areacode, G4ThreeVector &d, G4ThreeVector &x0, G4int &boundarytype) const
virtual G4ThreeVector	GetBoundaryAtPZ (G4int areacode, const G4ThreeVector &p) const
G4double	DistanceToPlaneWithV (const G4ThreeVector &p, const G4ThreeVector &v, const G4ThreeVector &x0, const G4ThreeVector &n0, G4ThreeVector &xx)
G4double	DistanceToPlane (const G4ThreeVector &p, const G4ThreeVector &x0, const G4ThreeVector &n0, G4ThreeVector &xx)
G4double	DistanceToPlane (const G4ThreeVector &p, const G4ThreeVector &x0, const G4ThreeVector &t1, const G4ThreeVector &t2, G4ThreeVector &xx, G4ThreeVector &n)
G4double	DistanceToLine (const G4ThreeVector &p, const G4ThreeVector &x0, const G4ThreeVector &d, G4ThreeVector &xx)
G4bool	IsAxis0 (G4int areacode) const
G4bool	IsAxis1 (G4int areacode) const
G4bool	IsOutside (G4int areacode) const
G4bool	IsInside (G4int areacode, G4bool testbitmode=false) const
G4bool	IsBoundary (G4int areacode, G4bool testbitmode=false) const
G4bool	IsCorner (G4int areacode, G4bool testbitmode=false) const
G4bool	IsValidNorm () const
G4bool	IsSameBoundary (G4VTwistSurface *surface1, G4int areacode1, G4VTwistSurface *surface2, G4int areacode2) const
G4int	GetAxisType (G4int areacode, G4int whichaxis) const
G4ThreeVector	ComputeGlobalPoint (const G4ThreeVector &lp) const
G4ThreeVector	ComputeLocalPoint (const G4ThreeVector &gp) const
G4ThreeVector	ComputeGlobalDirection (const G4ThreeVector &lp) const
G4ThreeVector	ComputeLocalDirection (const G4ThreeVector &gp) const
void	SetAxis (G4int i, const EAxis axis)
void	SetNeighbours (G4VTwistSurface *axis0min, G4VTwistSurface *axis1min, G4VTwistSurface *axis0max, G4VTwistSurface *axis1max)
G4int	GetNode (G4int i, G4int j, G4int m, G4int n, G4int iside)
G4int	GetFace (G4int i, G4int j, G4int m, G4int n, G4int iside)
G4int	GetEdgeVisibility (G4int i, G4int j, G4int m, G4int n, G4int number, G4int orientation)
	G4VTwistSurface (__void__ &)

Protected Member Functions
virtual G4int	GetAreaCode (const G4ThreeVector &xx, G4bool withTol=true)
Protected Member Functions inherited from G4VTwistSurface
G4VTwistSurface **	GetNeighbours ()
G4int	GetNeighbours (G4int areacode, G4VTwistSurface *surfaces[])
G4ThreeVector	GetCorner (G4int areacode) const
void	GetBoundaryAxis (G4int areacode, EAxis axis[]) const
void	GetBoundaryLimit (G4int areacode, G4double limit[]) const
virtual void	SetBoundary (const G4int &axiscode, const G4ThreeVector &direction, const G4ThreeVector &x0, const G4int &boundarytype)
void	SetCorner (G4int areacode, G4double x, G4double y, G4double z)

Additional Inherited Members
Public Types inherited from G4VTwistSurface
enum	EValidate { kDontValidate = 0, kValidateWithTol = 1, kValidateWithoutTol = 2, kUninitialized = 3 }
Static Public Attributes inherited from G4VTwistSurface
static const G4int	sOutside = 0x00000000
static const G4int	sInside = 0x10000000
static const G4int	sBoundary = 0x20000000
static const G4int	sCorner = 0x40000000
static const G4int	sC0Min1Min = 0x40000101
static const G4int	sC0Max1Min = 0x40000201
static const G4int	sC0Max1Max = 0x40000202
static const G4int	sC0Min1Max = 0x40000102
static const G4int	sAxisMin = 0x00000101
static const G4int	sAxisMax = 0x00000202
static const G4int	sAxisX = 0x00000404
static const G4int	sAxisY = 0x00000808
static const G4int	sAxisZ = 0x00000C0C
static const G4int	sAxisRho = 0x00001010
static const G4int	sAxisPhi = 0x00001414
static const G4int	sAxis0 = 0x0000FF00
static const G4int	sAxis1 = 0x000000FF
static const G4int	sSizeMask = 0x00000303
static const G4int	sAxisMask = 0x0000FCFC
static const G4int	sAreaMask = 0XF0000000
Protected Attributes inherited from G4VTwistSurface
EAxis	fAxis [2]
G4double	fAxisMin [2]
G4double	fAxisMax [2]
CurrentStatus	fCurStatWithV
CurrentStatus	fCurStat
G4RotationMatrix	fRot
G4ThreeVector	fTrans
G4int	fHandedness
G4SurfCurNormal	fCurrentNormal
G4bool	fIsValidNorm
G4double	kCarTolerance

Detailed Description

Definition at line 50 of file G4TwistTrapFlatSide.hh.

Constructor & Destructor Documentation

G4TwistTrapFlatSide::G4TwistTrapFlatSide	(	const G4String &	name,
		G4double	PhiTwist,
		G4double	pDx1,
		G4double	pDx2,
		G4double	pDy,
		G4double	pDz,
		G4double	pAlpha,
		G4double	pPhi,
		G4double	pTheta,
		G4int	handedness
	)

Definition at line 46 of file G4TwistTrapFlatSide.cc.

  : G4VTwistSurface(name)
{
   fHandedness = handedness;   // +z = +ve, -z = -ve

   fDx1 = pDx1 ;
   fDx2 = pDx2 ;
   fDy = pDy ;
   fDz = pDz ;
   fAlpha = pAlpha ;
   fTAlph = std::tan(fAlpha) ;
   fPhi  = pPhi ;
   fTheta = pTheta ;

   fdeltaX = 2 * fDz * std::tan(fTheta) * std::cos(fPhi)  ;
     // dx in surface equation
   fdeltaY = 2 * fDz * std::tan(fTheta) * std::sin(fPhi)  ;
     // dy in surface equation

   fPhiTwist = PhiTwist ;

   fCurrentNormal.normal.set( 0, 0, (fHandedness < 0 ? -1 : 1)); 
         // Unit vector, in local coordinate system
   fRot.rotateZ( fHandedness > 0 
                 ? 0.5 * fPhiTwist
                 : -0.5 * fPhiTwist );

   fTrans.set(
              fHandedness > 0 ? 0.5*fdeltaX : -0.5*fdeltaX , 
              fHandedness > 0 ? 0.5*fdeltaY : -0.5*fdeltaY ,
              fHandedness > 0 ? fDz : -fDz ) ;

   fIsValidNorm = true;


   fAxis[0] = kXAxis ;
   fAxis[1] = kYAxis ;
   fAxisMin[0] = kInfinity ;  // x-Axis cannot be fixed, because it 
   fAxisMax[0] =  kInfinity ; // depends on y
   fAxisMin[1] = -fDy ;  // y - axis
   fAxisMax[1] =  fDy ;

   SetCorners();
   SetBoundaries();
}

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G4TwistTrapFlatSide::~G4TwistTrapFlatSide ( )

virtual

Definition at line 116 of file G4TwistTrapFlatSide.cc.

{
}

G4TwistTrapFlatSide::G4TwistTrapFlatSide

(

__void__ &

a

)

Definition at line 106 of file G4TwistTrapFlatSide.cc.

  : G4VTwistSurface(a), fDx1(0.), fDx2(0.), fDy(0.), fDz(0.), fPhiTwist(0.), 
    fAlpha(0.), fTAlph(0.), fPhi(0.), fTheta(0.), fdeltaX(0.), fdeltaY(0.)
{
}

Member Function Documentation

G4int G4TwistTrapFlatSide::DistanceToSurface ( const G4ThreeVector &  gp, const G4ThreeVector &  gv, G4ThreeVector  gxx[], G4double  distance[], G4int  areacode[], G4bool  isvalid[], EValidate  validate = kValidateWithTol  )

virtual

Implements G4VTwistSurface.

Definition at line 136 of file G4TwistTrapFlatSide.cc.

{
   fCurStatWithV.ResetfDone(validate, &gp, &gv);
   
   if (fCurStatWithV.IsDone()) {
      G4int i;
      for (i=0; i<fCurStatWithV.GetNXX(); i++) {
         gxx[i] = fCurStatWithV.GetXX(i);
         distance[i] = fCurStatWithV.GetDistance(i);
         areacode[i] = fCurStatWithV.GetAreacode(i);
         isvalid[i]  = fCurStatWithV.IsValid(i);
      }
      return fCurStatWithV.GetNXX();
   } else {
      // initialize
      G4int i;
      for (i=0; i<2; i++) {
         distance[i] = kInfinity;
         areacode[i] = sOutside;
         isvalid[i]  = false;
         gxx[i].set(kInfinity, kInfinity, kInfinity);
      }
   }

   G4ThreeVector p = ComputeLocalPoint(gp);
   G4ThreeVector v = ComputeLocalDirection(gv);

   //
   // special case!
   // if p is on surface, distance = 0. 
   //

   if (std::fabs(p.z()) == 0.) {   // if p is on the plane
      distance[0] = 0;
      G4ThreeVector xx = p;
      gxx[0] = ComputeGlobalPoint(xx);
      
      if (validate == kValidateWithTol) {
         areacode[0] = GetAreaCode(xx);
         if (!IsOutside(areacode[0])) {
            isvalid[0] = true;
         }
      } else if (validate == kValidateWithoutTol) {
         areacode[0] = GetAreaCode(xx, false);
         if (IsInside(areacode[0])) {
            isvalid[0] = true;
         }
      } else { // kDontValidate
         areacode[0] = sInside;
         isvalid[0] = true;
      }

      return 1;
   }
   //
   // special case end
   //
   
   if (v.z() == 0) { 

      fCurStatWithV.SetCurrentStatus(0, gxx[0], distance[0], areacode[0], 
                                     isvalid[0], 0, validate, &gp, &gv);
      return 0;
   }
   
   distance[0] = - (p.z() / v.z());
      
   G4ThreeVector xx = p + distance[0]*v;
   gxx[0] = ComputeGlobalPoint(xx);

   if (validate == kValidateWithTol) {
      areacode[0] = GetAreaCode(xx);
      if (!IsOutside(areacode[0])) {
         if (distance[0] >= 0) isvalid[0] = true;
      }
   } else if (validate == kValidateWithoutTol) {
      areacode[0] = GetAreaCode(xx, false);
      if (IsInside(areacode[0])) {
         if (distance[0] >= 0) isvalid[0] = true;
      }
   } else { // kDontValidate
      areacode[0] = sInside;
         if (distance[0] >= 0) isvalid[0] = true;
   }


   fCurStatWithV.SetCurrentStatus(0, gxx[0], distance[0], areacode[0],
                                  isvalid[0], 1, validate, &gp, &gv);

#ifdef G4TWISTDEBUG
   G4cerr << "ERROR - G4TwistTrapFlatSide::DistanceToSurface(p,v)" << G4endl;
   G4cerr << "        Name        : " << GetName() << G4endl;
   G4cerr << "        xx          : " << xx << G4endl;
   G4cerr << "        gxx[0]      : " << gxx[0] << G4endl;
   G4cerr << "        dist[0]     : " << distance[0] << G4endl;
   G4cerr << "        areacode[0] : " << areacode[0] << G4endl;
   G4cerr << "        isvalid[0]  : " << isvalid[0]  << G4endl;
#endif
   return 1;
}

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G4int G4TwistTrapFlatSide::DistanceToSurface ( const G4ThreeVector &  gp, G4ThreeVector  gxx[], G4double  distance[], G4int  areacode[]  )

virtual

Implements G4VTwistSurface.

Definition at line 246 of file G4TwistTrapFlatSide.cc.

{
   // Calculate distance to plane in local coordinate,
   // then return distance and global intersection points.
   //  

   fCurStat.ResetfDone(kDontValidate, &gp);

   if (fCurStat.IsDone()) {
      G4int i;
      for (i=0; i<fCurStat.GetNXX(); i++) {
         gxx[i] = fCurStat.GetXX(i);
         distance[i] = fCurStat.GetDistance(i);
         areacode[i] = fCurStat.GetAreacode(i);
      }
      return fCurStat.GetNXX();
   } else {
      // initialize
      G4int i;
      for (i=0; i<2; i++) {
         distance[i] = kInfinity;
         areacode[i] = sOutside;
         gxx[i].set(kInfinity, kInfinity, kInfinity);
      }
   }
   
   G4ThreeVector p = ComputeLocalPoint(gp);
   G4ThreeVector xx;

   // The plane is placed on origin with making its normal 
   // parallel to z-axis. 
   if (std::fabs(p.z()) <= 0.5 * kCarTolerance)
   {   // if p is on the plane, return 1
      distance[0] = 0;
      xx = p;
   } else {
      distance[0] = std::fabs(p.z());
      xx.set(p.x(), p.y(), 0);  
   }

   gxx[0] = ComputeGlobalPoint(xx);
   areacode[0] = sInside;
   G4bool isvalid = true;
   fCurStat.SetCurrentStatus(0, gxx[0], distance[0], areacode[0],
                             isvalid, 1, kDontValidate, &gp);
   return 1;

}

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G4int G4TwistTrapFlatSide::GetAreaCode ( const G4ThreeVector &  xx, G4bool  withTol = true  )

protectedvirtual

Implements G4VTwistSurface.

Definition at line 298 of file G4TwistTrapFlatSide.cc.

{

  static const G4double ctol = 0.5 * kCarTolerance;
  G4int areacode = sInside;
  
  if (fAxis[0] == kXAxis && fAxis[1] == kYAxis) {

    G4int yaxis = 1;
    
    G4double wmax = xAxisMax(xx.y(), fTAlph ) ;
    G4double wmin = -xAxisMax(xx.y(), -fTAlph ) ;

    if (withTol) {
      
      G4bool isoutside   = false;
      
      // test boundary of x-axis
      
      if (xx.x() < wmin + ctol) {
        areacode |= (sAxis0 & (sAxisX | sAxisMin)) | sBoundary; 
        if (xx.x() <= wmin - ctol) isoutside = true;
        
      } else if (xx.x() > wmax - ctol) {
        areacode |= (sAxis0 & (sAxisX | sAxisMax)) | sBoundary;
        if (xx.x() >= wmax + ctol)  isoutside = true;
      }
      
      // test boundary of y-axis
      
      if (xx.y() < fAxisMin[yaxis] + ctol) {
        areacode |= (sAxis1 & (sAxisY | sAxisMin)); 
        
        if   (areacode & sBoundary) areacode |= sCorner;  // xx is on the corner.
        else                        areacode |= sBoundary;
        if (xx.y() <= fAxisMin[yaxis] - ctol) isoutside = true;
        
      } else if (xx.y() > fAxisMax[yaxis] - ctol) {
        areacode |= (sAxis1 & (sAxisY | sAxisMax));
        
        if   (areacode & sBoundary) areacode |= sCorner;  // xx is on the corner.
        else                        areacode |= sBoundary; 
        if (xx.y() >= fAxisMax[yaxis] + ctol) isoutside = true;
      }
      
      // if isoutside = true, clear inside bit.             
      // if not on boundary, add axis information.             
      
      if (isoutside) {
        G4int tmpareacode = areacode & (~sInside);
        areacode = tmpareacode;
      } else if ((areacode & sBoundary) != sBoundary) {
        areacode |= (sAxis0 & sAxisX) | (sAxis1 & sAxisY);
      }           
      
    } else {
      
      // boundary of x-axis
      
      if (xx.x() < wmin ) {
        areacode |= (sAxis0 & (sAxisX | sAxisMin)) | sBoundary;
      } else if (xx.x() > wmax) {
        areacode |= (sAxis0 & (sAxisX | sAxisMax)) | sBoundary;
      }
      
      // boundary of y-axis
      
      if (xx.y() < fAxisMin[yaxis]) {
        areacode |= (sAxis1 & (sAxisY | sAxisMin));
        if   (areacode & sBoundary) areacode |= sCorner;  // xx is on the corner.
        else                        areacode |= sBoundary; 
        
      } else if (xx.y() > fAxisMax[yaxis]) {
        areacode |= (sAxis1 & (sAxisY | sAxisMax)) ;
        if   (areacode & sBoundary) areacode |= sCorner;  // xx is on the corner.
        else                        areacode |= sBoundary; 
      }
      
      if ((areacode & sBoundary) != sBoundary) {
        areacode |= (sAxis0 & sAxisX) | (sAxis1 & sAxisY);
      }           
    }
    return areacode;
  } else {
    G4Exception("G4TwistTrapFlatSide::GetAreaCode()",
                "GeomSolids0001", FatalException,
                "Feature NOT implemented !");
  }
  
  return areacode;
}

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G4double G4TwistTrapFlatSide::GetBoundaryMax ( G4double  u )

inlinevirtual

Implements G4VTwistSurface.

Definition at line 150 of file G4TwistTrapFlatSide.hh.

{
  return xAxisMax(y, fTAlph ) ; 
}

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G4double G4TwistTrapFlatSide::GetBoundaryMin ( G4double  u )

inlinevirtual

Implements G4VTwistSurface.

Definition at line 144 of file G4TwistTrapFlatSide.hh.

{
  return -xAxisMax(y, -fTAlph ) ;
}

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void G4TwistTrapFlatSide::GetFacets ( G4int  m, G4int  n, G4double  xyz[][3], G4int  faces[][4], G4int  iside  )

virtual

Implements G4VTwistSurface.

Definition at line 486 of file G4TwistTrapFlatSide.cc.

{

  G4double x,y    ;     // the two parameters for the surface equation
  G4ThreeVector p ;  // a point on the surface, given by (z,u)

  G4int nnode ;
  G4int nface ;

  G4double xmin,xmax ;

  // calculate the (n-1)*(k-1) vertices

  G4int i,j ;

  for ( i = 0 ; i<n ; i++ ) {

    y = -fDy + i*(2*fDy)/(n-1) ;

    for ( j = 0 ; j<k ; j++ ) {

      xmin = GetBoundaryMin(y) ;
      xmax = GetBoundaryMax(y) ;
      x = xmin + j*(xmax-xmin)/(k-1) ;

      nnode = GetNode(i,j,k,n,iside) ;
      p = SurfacePoint(x,y,true) ;  // surface point in global coordinate system

      xyz[nnode][0] = p.x() ;
      xyz[nnode][1] = p.y() ;
      xyz[nnode][2] = p.z() ;

      if ( i<n-1 && j<k-1 ) {   

        nface = GetFace(i,j,k,n,iside) ;

        if (fHandedness < 0) {  // lower side 
          faces[nface][0] = GetEdgeVisibility(i,j,k,n,0,1) * ( GetNode(i  ,j  ,k,n,iside)+1) ;  
          faces[nface][1] = GetEdgeVisibility(i,j,k,n,1,1) * ( GetNode(i+1,j  ,k,n,iside)+1) ;
          faces[nface][2] = GetEdgeVisibility(i,j,k,n,2,1) * ( GetNode(i+1,j+1,k,n,iside)+1) ;
          faces[nface][3] = GetEdgeVisibility(i,j,k,n,3,1) * ( GetNode(i  ,j+1,k,n,iside)+1) ;
        } else {                // upper side
          faces[nface][0] = GetEdgeVisibility(i,j,k,n,0,-1) * ( GetNode(i  ,j  ,k,n,iside)+1) ;  
          faces[nface][1] = GetEdgeVisibility(i,j,k,n,1,-1) * ( GetNode(i  ,j+1,k,n,iside)+1) ;
          faces[nface][2] = GetEdgeVisibility(i,j,k,n,2,-1) * ( GetNode(i+1,j+1,k,n,iside)+1) ;
          faces[nface][3] = GetEdgeVisibility(i,j,k,n,3,-1) * ( GetNode(i+1,j  ,k,n,iside)+1) ;
        }

      }
    }
  }
}

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G4ThreeVector G4TwistTrapFlatSide::GetNormal ( const G4ThreeVector &  , G4bool  isGlobal = false  )

virtual

Implements G4VTwistSurface.

Definition at line 123 of file G4TwistTrapFlatSide.cc.

{
   if (isGlobal) {
      return ComputeGlobalDirection(fCurrentNormal.normal);
   } else {
      return fCurrentNormal.normal;
   }
}

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G4double G4TwistTrapFlatSide::GetSurfaceArea ( )

inlinevirtual

Implements G4VTwistSurface.

Definition at line 156 of file G4TwistTrapFlatSide.hh.

{
  return 2*(fDx1 + fDx2)*fDy ;
}

G4ThreeVector G4TwistTrapFlatSide::SurfacePoint ( G4double  x, G4double  y, G4bool  isGlobal = false  )

inlinevirtual

Implements G4VTwistSurface.

Definition at line 135 of file G4TwistTrapFlatSide.hh.

{
  G4ThreeVector SurfPoint ( x,y,0);

  if (isGlobal) { return (fRot*SurfPoint + fTrans); }
  return SurfPoint;
}

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---

The documentation for this class was generated from the following files:

• source/geant4.10.03.p02/source/geometry/solids/specific/include/G4TwistTrapFlatSide.hh
• source/geant4.10.03.p02/source/geometry/solids/specific/src/G4TwistTrapFlatSide.cc