Gabriele Cosmo
147 lines
4.9 KiB
C++
147 lines
4.9 KiB
C++
// This code implementation is the intellectual property of
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// the GEANT4 collaboration.
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//
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// By copying, distributing or modifying the Program (or any work
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// based on the Program) you indicate your acceptance of this statement,
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// and all its terms.
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//
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// $Id: G4PolyPhiFace.hh,v 1.3 2000/11/02 16:54:48 gcosmo Exp $
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// GEANT4 tag $Name: geant4-03-00 $
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//
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//
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// --------------------------------------------------------------------
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// GEANT 4 class header file
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//
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//
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// G4PolyPhiFace
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//
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// Class description:
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//
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// Definition of a face that bounds a polycone or polyhedra when
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// it has a phi opening:
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//
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// G4PolyPhiFace( const G4ReduciblePolygon *rz,
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// G4double phi,
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// G4double deltaPhi,
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// G4double phiOther )
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//
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// Specifically: a face that lies on a plane that passes through
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// the z axis. It has boundaries that are straight lines of arbitrary
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// length and direction, but with corners aways on the same side of
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// the z axis.
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// Author:
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// David C. Williams (davidw@scipp.ucsc.edu)
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// --------------------------------------------------------------------
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#ifndef G4PolyPhiFace_hh
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#define G4PolyPhiFace_hh
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#include "G4VCSGface.hh"
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class G4ReduciblePolygon;
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typedef struct {
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G4double x, y, r, z; // position
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G4double rNorm,
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zNorm; // r/z normal
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G4ThreeVector norm3D; // 3D normal
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} G4PolyPhiFaceVertex;
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typedef struct {
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G4PolyPhiFaceVertex *v0, *v1; // Corners
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G4double tr, tz, // Unit vector along edge
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length; // Length of edge
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G4ThreeVector norm3D; // 3D edge normal vector
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} G4PolyPhiFaceEdge;
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class G4PolyPhiFace : public G4VCSGface
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{
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public: // with description
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G4PolyPhiFace( const G4ReduciblePolygon *rz,
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G4double phi, G4double deltaPhi, G4double phiOther );
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// Constructor.
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// Points r,z should be supplied in clockwise order in r,z.
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// For example:
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// [1]---------[2] ^ R
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// | | |
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// | | +--> z
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// [0]---------[3]
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virtual ~G4PolyPhiFace();
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// Destructor. Removes edges and corners.
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G4PolyPhiFace( const G4PolyPhiFace &source );
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G4PolyPhiFace& operator=( const G4PolyPhiFace &source );
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// Copy constructor and assgnment operator.
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G4bool Intersect( const G4ThreeVector &p, const G4ThreeVector &v,
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G4bool outgoing, G4double surfTolerance,
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G4double &distance, G4double &distFromSurface,
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G4ThreeVector &normal, G4bool &allBehind );
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G4double Distance( const G4ThreeVector &p, G4bool outgoing );
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EInside Inside( const G4ThreeVector &p, G4double tolerance,
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G4double *bestDistance );
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G4ThreeVector Normal( const G4ThreeVector &p, G4double *bestDistance );
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G4double Extent( const G4ThreeVector axis );
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void CalculateExtent( const EAxis axis,
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const G4VoxelLimits &voxelLimit,
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const G4AffineTransform &tranform,
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G4SolidExtentList &extentList );
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inline G4VCSGface *Clone();
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// Allocates on the heap a clone of this face.
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public: // without description
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void Diagnose( G4VSolid *solid );
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// Throw an exception if something is found inconsistent with
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// the solid. For debugging purposes only
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protected:
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G4PolyPhiFaceEdge *edges; // The edges of the face
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G4PolyPhiFaceVertex *corners; // And the corners
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G4int numEdges; // Number of edges
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G4ThreeVector normal; // Normal unit vector
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G4ThreeVector radial; // Unit vector along radial direction
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G4ThreeVector surface; // Point on surface
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G4double rMin, rMax, // Extent in r
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zMin, zMax; // Extent in z
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G4bool allBehind; // True if the polycone/polyhedra
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// is behind the place of this face
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G4bool InsideEdgesExact( G4double r, G4double z, G4double normSign,
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const G4ThreeVector &p, const G4ThreeVector &v );
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// Decide if the point in r,z is inside the edges of our face,
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// **but** do so consistently with other faces.
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G4bool InsideEdges( G4double r, G4double z );
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G4bool InsideEdges( G4double r, G4double z, G4double *distRZ2,
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G4PolyPhiFaceVertex **base3Dnorm=0,
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G4ThreeVector **head3Dnorm=0 );
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// Decide if the point in r,z is inside the edges of our face.
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inline G4double ExactZOrder( G4double z,
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G4double qx, G4double qy, G4double qz,
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const G4ThreeVector &v,
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G4double normSign,
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const G4PolyPhiFaceVertex *vert ) const;
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// Decide precisely whether a trajectory passes to the left, right,
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// or exactly passes through the z position of a vertex point in face.
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void CopyStuff( const G4PolyPhiFace &source );
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};
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#include "G4PolyPhiFace.icc"
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#endif
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