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BrPlane3Dclass description - source file - inheritance tree class BrPlane3D : public TObject
public:
Data Members
private:
See alsoClass DescriptionBrPlane3D defines a general 3-plane class. BrPlane3D is part of the geometry classes. This is a general class only coupled to ROOT by having the objects being derived from TObject. The main reasons for doing this is to be able to use the ROOTs interactive features. It is intended to be used by detector geometry , tracking, and display classes by using common geometry concepts. It is also intended to work together with other geometry clasess like BrLine3D, BrVector3D and likely other The coupling to ROOT is loose. The classes are derived from TObject, mainly to be able to use browsers and other general ROOT utilities. Drawing has not been implemented here again to maintain a very loose coupling. Such general classes has of course been implemented by numerous people, and design choices made. As such example the CLHEP should be acknowledged. The plane is specified as fA*x + fB*y + fC*z + fD = 0. The object can be created by either directly specifying the plane coefficients, fA, fB, fC and fD or by specifying three points on the plane either by using BrVector3D, by specifying the x,y,z coordinates of the three points explicitely, or by specifiing a point (ie, vector) and a vector normal to the plane. The constructor with a,b,c may fail since (fa,fb, fc) must be different from the zero vector. BrPlane3D(const BrVector3D &p1, const BrVector3D &p2, const BrVector3D &p3) Constructor Derive a plane from 3 points specified as point objects. BrPlane3D(const Double_t x1, const Double_t y1, const Double_t z1, const Double_t x2, const Double_t y2, const Double_t z2, const Double_t x3, const Double_t y3, const Double_t z3 ) Constructor Derive a plane from 3 points specified explicitly. BrPlane3D(const BrVector3D &point, const BrVector3D &normal) Constructor Derive a plane from a point and a vector normal to the plane. void Set(const BrVector3D &p1, const BrVector3D &p2, const BrVector3D &p3) Derive a plane from 3 points specified as point objects. BrVector3D GetIntersectionWithLine(const BrLine3D &line) Find the intersection of the specified line with this plane. Must throw something if the line does not intercept.!!! Double_t GetMinimumDistanceFromPlane(const BrVector3D &point) Get the minimum distance from the specified point to this plane BrVector3D UnitNormal() Inline Functions
BrPlane3D BrPlane3D(const Double_t x1, const Double_t y1, const Double_t z1, const Double_t x2, const Double_t y2, const Double_t z2, const Double_t x3, const Double_t y3, const Double_t z3)
BrPlane3D BrPlane3D(const BrPlane3D& plane)
BrPlane3D& operator=(const BrPlane3D&)
BrPlane3D& operator+=(const BrPlane3D&)
BrPlane3D& operator-=(const BrPlane3D&)
BrPlane3D operator-() const
BrPlane3D operator+() const
const Double_t& operator[](size_t) const
Double_t& operator[](size_t)
const Double_t& operator()(size_t) const
Double_t& operator()(size_t)
Bool_t operator==(const BrPlane3D&) const
Bool_t operator!=(const BrPlane3D&) const
Double_t GetA() const
Double_t GetB() const
Double_t GetC() const
Double_t GetD() const
void SetA(Double_t value)
void SetB(Double_t value)
void SetC(Double_t value)
void SetD(Double_t value)
TClass* Class()
TClass* IsA() const
void ShowMembers(TMemberInspector& insp, char* parent)
void Streamer(TBuffer& b)
void StreamerNVirtual(TBuffer& b)
void ~BrPlane3D()
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Copyright ; 2002 BRAHMS Collaboration
<brahmlib@rcf.rhic.bnl.gov>
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