public:

TGeoTrap TGeoTrap() TGeoTrap TGeoTrap(Double_t dz, Double_t theta, Double_t phi) TGeoTrap TGeoTrap(Double_t dz, Double_t theta, Double_t phi, Double_t h1, Double_t bl1, Double_t tl1, Double_t alpha1, Double_t h2, Double_t bl2, Double_t tl2, Double_t alpha2) TGeoTrap TGeoTrap(const char* name, Double_t dz, Double_t theta, Double_t phi, Double_t h1, Double_t bl1, Double_t tl1, Double_t alpha1, Double_t h2, Double_t bl2, Double_t tl2, Double_t alpha2) TGeoTrap TGeoTrap(const TGeoTrap&) virtual void ~TGeoTrap() static TClass* Class() virtual Double_t DistToIn(Double_t* point, Double_t* dir, Int_t iact = 1, Double_t step = 0, Double_t* safe = 0) const virtual Double_t DistToOut(Double_t* point, Double_t* dir, Int_t iact = 1, Double_t step = 0, Double_t* safe = 0) const virtual TGeoVolume* Divide(TGeoVolume* voldiv, const char* divname, Int_t iaxis, Int_t ndiv, Double_t start, Double_t step) Double_t GetAlpha1() const Double_t GetAlpha2() const Double_t GetBl1() const Double_t GetBl2() const Double_t GetH1() const Double_t GetH2() const virtual TGeoShape* GetMakeRuntimeShape(TGeoShape* mother) const Double_t GetPhi() const Double_t GetTheta() const Double_t GetTl1() const Double_t GetTl2() const virtual TClass* IsA() const virtual Double_t Safety(Double_t* point, Bool_t in = kTRUE) const virtual void ShowMembers(TMemberInspector& insp, char* parent) virtual void Streamer(TBuffer& b) void StreamerNVirtual(TBuffer& b)

protected:

Double_t fThetatheta angleDouble_t fPhiphi angleDouble_t fH1half length in y at low zDouble_t fBl1half length in x at low z and y low edgeDouble_t fTl1half length in x at low z and y high edgeDouble_t fAlpha1angle between centers of x edges an y axis at low zDouble_t fH2half length in y at high zDouble_t fBl2half length in x at high z and y low edgeDouble_t fTl2half length in x at high z and y high edgeDouble_t fAlpha2angle between centers of x edges an y axis at low z

- TGeoGtra

TGeoArb8 - a arbitrary trapezoid with less than 8 vertices standing on two paralel planes perpendicular to Z axis. Parameters : - dz - half length in Z; - xy[8][2] - vector of (x,y) coordinates of vertices - first four points (xy[i][j], i<4, j<2) are the (x,y) coordinates of the vertices sitting on the -dz plane; - last four points (xy[i][j], i>=4, j<2) are the (x,y) coordinates of the vertices sitting on the +dz plane; The order of defining the vertices of an arb8 is the following : - point 0 is connected with points 1,3,4 - point 1 is connected with points 0,2,5 - point 2 is connected with points 1,3,6 - point 3 is connected with points 0,2,7 - point 4 is connected with points 0,5,7 - point 5 is connected with points 1,4,6 - point 6 is connected with points 2,5,7 - point 7 is connected with points 3,4,6 Points can be identical in order to create shapes with less than 8 vertices.

TGeoTrap()

dummy ctor

TGeoTrap(Double_t dz, Double_t theta, Double_t phi) :TGeoArb8("", 0, 0)

TGeoTrap(Double_t dz, Double_t theta, Double_t phi, Double_t h1, Double_t bl1, Double_t tl1, Double_t alpha1, Double_t h2, Double_t bl2, Double_t tl2, Double_t alpha2) :TGeoArb8("", 0, 0)

constructor.

TGeoTrap(const char *name, Double_t dz, Double_t theta, Double_t phi, Double_t h1, Double_t bl1, Double_t tl1, Double_t alpha1, Double_t h2, Double_t bl2, Double_t tl2, Double_t alpha2) :TGeoArb8(name, 0, 0)

constructor with name

~TGeoTrap()

destructor

Double_t DistToOut(Double_t *point, Double_t *dir, Int_t iact, Double_t step, Double_t *safe) const

compute distance from inside point to surface of the arb8

Double_t DistToIn(Double_t *point, Double_t *dir, Int_t iact, Double_t step, Double_t *safe) const

compute distance from outside point to surface of the arb8

TGeoVolume* Divide(TGeoVolume *voldiv, const char *divname, Int_t iaxis, Int_t ndiv, Double_t start, Double_t step)

--- Divide this trapezoid shape belonging to volume "voldiv" into ndiv volumes called divname, from start position with the given step. Only Z divisions are supported. For Z divisions just return the pointer to the volume to be divided. In case a wrong division axis is supplied, returns pointer to volume that was divided.

TGeoShape* GetMakeRuntimeShape(TGeoShape *mother) const

in case shape has some negative parameters, these has to be computed in order to fit the mother

Double_t Safety(Double_t *point, Bool_t in) const

Computes the closest distance from given point to this shape, according to option.

Double_t GetTheta() const Double_t GetPhi() const Double_t GetH1() const Double_t GetBl1() const Double_t GetTl1() const Double_t GetAlpha1() const Double_t GetH2() const Double_t GetBl2() const Double_t GetTl2() const Double_t GetAlpha2() const TClass* Class() TClass* IsA() const void ShowMembers(TMemberInspector& insp, char* parent) void Streamer(TBuffer& b) void StreamerNVirtual(TBuffer& b) TGeoTrap TGeoTrap(const TGeoTrap&)

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