G4ErrorPlaneSurfaceTarget.hh

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// G4ErrorPlaneSurfaceTarget
//
// Class Description:
//
// Limits step when track reaches a plane surface.
 
// Author: Pedro Arce (CIEMAT), September 2004
// --------------------------------------------------------------------
#ifndef G4ERRORPLANESURFACETARGET_HH
#define G4ERRORPLANESURFACETARGET_HH
 
#include "globals.hh"
#include "G4ErrorSurfaceTarget.hh"
#include "G4ThreeVector.hh"
#include "G4Normal3D.hh"
#include "G4Plane3D.hh"
#include "G4Point3D.hh"
 
/**
 * @brief G4ErrorPlaneSurfaceTarget is an utility class for limiting
 * the step when a track reaches a plane surface.
 */
 
class G4ErrorPlaneSurfaceTarget : public G4ErrorSurfaceTarget, G4Plane3D
{
  public:
 
    /**
     * Constructor for G4ErrorPlaneSurfaceTarget. It constructs a plane
     * by parameters: ax+by+cz+d = 0.
     */
    G4ErrorPlaneSurfaceTarget(G4double a=0., G4double b=0.,
                              G4double c=0., G4double d=0.);
 
    /**
     * Constructor for G4ErrorPlaneSurfaceTarget. It constructs a plane
     * by point 'p' and normal 'n'.
     */
    G4ErrorPlaneSurfaceTarget(const G4Normal3D& n,
                              const G4Point3D& p);
 
    /**
     * Constructor for G4ErrorPlaneSurfaceTarget. It constructs a plane
     * by three points, 'p1', 'p2', 'p3'.
     */
    G4ErrorPlaneSurfaceTarget(const G4Point3D& p1,
                              const G4Point3D& p2,
                              const G4Point3D& p3);
 
    /**
     * Default Destructor.
     */
    ~G4ErrorPlaneSurfaceTarget() override = default;
 
    /**
     * Intersects the surface with the line given by point and direction.
     *  @param[in] point The point of reference.
     *  @param[in] direc The direction vector.
     *  @returns The intersection point.
     */
    G4ThreeVector Intersect( const G4ThreeVector& point,
                             const G4ThreeVector& direc ) const;
  
    /**
     * Computes the distance from a point to the surface in a given direction.
     *  @param[in] point The point of reference.
     *  @param[in] direc The direction vector.
     *  @returns The distance value.
     */
    G4double GetDistanceFromPoint( const G4ThreeVector& point,
                                   const G4ThreeVector& direc ) const override;
 
    /**
     * Computes the minimal distance from a point to surface.
     *  @param[in] point The point of reference.
     *  @returns The distance value.
     */
    G4double GetDistanceFromPoint( const G4ThreeVector& pt ) const override;
 
    /**
     * Computes the plane tangent to itself at a given point.
     *  @param[in] point The point of reference.
     *  @returns The tangent plane.
     */
    G4Plane3D GetTangentPlane( const G4ThreeVector& point ) const override;
 
    /**
     * Dumps to standard output the surface parameters.
     */
    void Dump( const G4String& msg ) const override;
};
 
#endif