Gabriele Cosmo
126 lines
4.0 KiB
C++
126 lines
4.0 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: G4VoxelLimits.hh,v 1.4 2000/04/20 16:49:48 gcosmo Exp $
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// GEANT4 tag $Name: geant4-03-00 $
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//
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// class G4VoxelLimits
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//
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// Class description:
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//
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// Represents limitation/restrictions of space, where restrictions
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// are only made perpendicular to the cartesian axes.
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//
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//
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// Member data:
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//
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// G4double fxAxisMin,fxAxisMax
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// G4double fyAxisMin,fyAxisMax
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// G4double fzAxisMin,fzAxisMax
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// - The min and max values along each axis. +-kInfinity if not restricted.
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//
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//
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// Notes:
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//
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// Beware no break statements after returns in switch(pAxis)s.
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// History:
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// 13.07.95 P.Kent Initial version.
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#ifndef G4VOXELLIMITS_HH
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#define G4VOXELLIMITS_HH
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#include "globals.hh"
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#include "geomdefs.hh"
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#include "G4ThreeVector.hh"
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#include "g4std/iostream"
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#include <assert.h>
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class G4VoxelLimits
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{
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public: // with description
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G4VoxelLimits() : fxAxisMin(-kInfinity),fxAxisMax(kInfinity),
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fyAxisMin(-kInfinity),fyAxisMax(kInfinity),
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fzAxisMin(-kInfinity),fzAxisMax(kInfinity) {;}
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// Constructor - initialise to be unlimited. Volume unrestricted.
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~G4VoxelLimits() {;}
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// Destructor. No actions.
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void AddLimit(const EAxis pAxis, const G4double pMin,const G4double pMax);
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// Restrict the volume to between specified min and max along the
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// given axis. Cartesian axes only, pMin<=pMax.
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G4double GetMaxXExtent() const;
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// Return maximum x extent.
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G4double GetMaxYExtent() const;
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// Return maximum y extent.
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G4double GetMaxZExtent() const;
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// Return maximum z extent.
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G4double GetMinXExtent() const;
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// Return minimum x extent.
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G4double GetMinYExtent() const;
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// Return minimum y extent.
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G4double GetMinZExtent() const;
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// Return minimum z extent.
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G4double GetMaxExtent(const EAxis pAxis) const;
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// Return maximum extent of volume along specified axis.
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G4double GetMinExtent(const EAxis pAxis) const;
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// Return minimum extent of volume along specified axis.
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G4bool IsXLimited() const;
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// Return true if the x axis is limited.
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G4bool IsYLimited() const;
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// Return true if the y axis is limited.
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G4bool IsZLimited() const;
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// Return true if the z axis is limited.
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G4bool IsLimited() const;
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// Return true if limited along any axis
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G4bool IsLimited(const EAxis pAxis) const;
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// Return true if the specified axis is restricted/limited.
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G4bool ClipToLimits(G4ThreeVector& pStart,G4ThreeVector& pEnd) const;
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// Clip the line segment pStart->pEnd to the volume described by the
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// current limits. Return true if the line remains after clipping,
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// else false, and leave the vectors in an undefined state.
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G4bool Inside(const G4ThreeVector& pVec) const;
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// Return true if the specified vector is inside/on boundaries of limits.
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G4int OutCode(const G4ThreeVector& pVec) const;
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// Calculate the `outcode' for the specified vector.
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// Intended for use during clipping against the limits
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// The bits are set given the following conditions:
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// 0 pVec.x()<fxAxisMin && IsXLimited()
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// 1 pVec.x()>fxAxisMax && IsXLimited()
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// 2 pVec.y()<fyAxisMin && IsYLimited()
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// 3 pVec.y()>fyAxisMax && IsYLimited()
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// 4 pVec.z()<fzAxisMin && IsZLimited()
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// 5 pVec.z()>fzAxisMax && IsZLimited()
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private:
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G4double fxAxisMin,fxAxisMax;
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G4double fyAxisMin,fyAxisMax;
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G4double fzAxisMin,fzAxisMax;
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};
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#include "G4VoxelLimits.icc"
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G4std::ostream& operator << (G4std::ostream& os, const G4VoxelLimits& pLim);
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// Print the limits to the stream in the form:
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// "{(xmin,xmax) (ymin,ymax) (zmin,zmax)}"
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// Replace (xmin,xmax) by (-,-) when not limited.
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#endif
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