[u/mrichter/AliRoot.git] / ITS / AliITSv11Geometry.h

#ifndef ALIITSV11GEOMETRY_H
#define ALIITSV11GEOMETRY_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

/*
  $Id$
 */

/*
  Base class for defining large parts of the ITS geometry, v11.
 */
#include <TObject.h>
class TGeoArb8;
class TGeoPcon;
class TGeoTube;
class TGeoTubeSeg;
class TGeoConeSeg;
class TGeoBBox;

class AliITSv11Geometry : public TObject {
  public:
    AliITSv11Geometry(){fDebug=kTRUE;};
    AliITSv11Geometry(Bool_t debug){fDebug=debug;};
    virtual ~AliITSv11Geometry(){};
    //
    // Sets the debug flag for debugging output
    void SetDebug(Int_t level=5){fDebug=level;}
    // Clears the debug flag so no debugging output will be generated
    void SetNoDebug(){fDebug=0;}
    // Returns the debug flag value
    Bool_t GetDebug(Int_t level=1)const {return fDebug>=level;}
    //
    // Static functions
    //
    // Define Trig functions for use with degrees (standerd TGeo angles).
    // Sine function
    Double_t SinD(Double_t deg)const{return TMath::Sin(deg*TMath::DegToRad());}
    // Cosine function
    Double_t CosD(Double_t deg)const{return TMath::Cos(deg*TMath::DegToRad());}
    // Tangent function
    Double_t TanD(Double_t deg)const{return TMath::Tan(deg*TMath::DegToRad());}
    // Given the line, defined by the two points (x0,y0) and (x1,y1) and the
    // point x, return the value of y.
    Double_t Yfrom2Points(Double_t x0,Double_t y0,
                                 Double_t x1,Double_t y1,Double_t x)const;
    // Given the line, defined by the two points (x0,y0) and (x1,y1) and the
    // point y, return the value of x.
    Double_t Xfrom2Points(Double_t x0,Double_t y0,
                                 Double_t x1,Double_t y1,Double_t y)const;
    // Given 2 points from a TGeoPcon(z and Rmax) finds Rmax at given z
    Double_t RmaxFrom2Points(const TGeoPcon *p,Int_t i1,Int_t i2,
                                    Double_t z)const;
    // Given 2 points from a TGeoPcon(z and Rmin) finds Rmin at given z
    Double_t RminFrom2Points(const TGeoPcon *p,Int_t i1,Int_t i2,
                                    Double_t z)const;
    // Give two points in the array ar and az, returns the value r 
    // corresponding z along the line defined by those two points
    Double_t RFrom2Points(const Double_t *ar,const Double_t *az,
                                 Int_t i1,Int_t i2,Double_t z)const;
    // Given 2 points from a TGeoPcon(z and Rmax) finds z at given Rmin
    Double_t Zfrom2MinPoints(const TGeoPcon *p,Int_t i1,Int_t i2,
                                    Double_t r)const;
    // Given 2 points from a TGeoPcon(z and Rmax) finds z at given Rmax
    Double_t Zfrom2MaxPoints(const TGeoPcon *p,Int_t i1,Int_t i2,
                                    Double_t r)const;
    // Give two points in the array ar and az, returns the value z 
    // corresponding r along the line defined by those two points
    Double_t Zfrom2Points(const Double_t *az,const Double_t *ar,
                                 Int_t i1,Int_t i2,Double_t r)const;
    // Given 1 point from a TGeoPcon(z and Rmax) the angle tc returns r for 
    // a given z, an offset (distnace perpendicular to line at angle tc) of 
    // th may be applied.
    Double_t RmaxFromZpCone(const TGeoPcon *p,int ip,Double_t tc,
                                   Double_t z,Double_t th=0.0)const;
    Double_t RFromZpCone(const Double_t *ar,const Double_t *az,int ip,
                                Double_t tc,Double_t z,Double_t th=0.0)const;
    // Given 1 point from a TGeoPcon(z and Rmin) the angle tc returns r for 
    // a given z, an offset (distnace perpendicular to line at angle tc) of 
    // th may be applied.
    Double_t RminFromZpCone(const TGeoPcon *p,Int_t ip,Double_t tc,
                                   Double_t z,Double_t th=0.0)const;
    // Given 1 point from a TGeoPcon(z and Rmax) the angle tc returns z for 
    // a given Rmax, an offset (distnace perpendicular to line at angle tc) of 
    // th may be applied.
    Double_t ZFromRmaxpCone(const TGeoPcon *p,int ip,Double_t tc,
                                   Double_t r,Double_t th=0.0)const;
    // General Outer cone Surface equation for z.
    Double_t ZFromRmaxpCone(const Double_t *ar,const Double_t *az,
                                   Int_t ip,Double_t tc,Double_t r,
                                   Double_t th=0.0)const;
    // Given 1 point from a TGeoPcon(z and Rmin) the angle tc returns z for 
    // a given Rmin, an offset (distnace perpendicular to line at angle tc) of 
    // th may be applied.
    Double_t ZFromRminpCone(const TGeoPcon *p,int ip,Double_t tc,
                                   Double_t r,Double_t th=0.0)const;
    // Given two lines defined by the points i1, i2,i3 in the TGeoPcon 
    // class p that intersect at point p->GetZ(i2) return the point z,r 
    // that is Cthick away in the TGeoPcon class q. If points i1=i2
    // and max == kTRUE, then p->GetRmin(i1) and p->GetRmax(i2) are used.
    // if points i2=i3 and max=kTRUE then points p->GetRmax(i2) and
    // p->GetRmin(i3) are used. If i2=i3 and max=kFALSE, then p->GetRmin(i2)
    // and p->GetRmax(i3) are used.
    void InsidePoint(const TGeoPcon *p,Int_t i1,Int_t i2,Int_t i3,
                        Double_t Cthick,TGeoPcon *q,Int_t j1,Bool_t max)const;
    // Given two intersecting lines defined by the points (x0,y0), (x1,y1) and
    // (x1,y1), (x1,y2) {intersecting at (x1,y1)} the point (x,y) a distance
    // c away is returned such that two lines a distance c away from the
    // lines defined above intersect at (x,y).
     void InsidePoint(Double_t x0,Double_t y0,Double_t x1,Double_t y1,
                            Double_t x2,Double_t y2,Double_t c,
                            Double_t &x,Double_t &y)const;
    // Given a initial point z0,r0, the initial angle theta0, and the radius
    // of curvature, returns the point z1, r1 at the angle theta1. Theta
    // measured from the r axis in the clock wise direction [degrees].
    void RadiusOfCurvature(Double_t rc,Double_t theta0,Double_t z0,
                           Double_t r0,Double_t theta1,Double_t &z1,
                           Double_t &r1)const;
    //
    // Output functions for debugging
    //
    // Prints out the contents of the TGeoArb8
    void PrintArb8(const TGeoArb8 *a) const;
    // Prints out the contents of the TGeoPcon
    void PrintPcon(const TGeoPcon *a) const;
    // Prints out the contents of the TGeoTube
    void PrintTube(const TGeoTube *a) const;
    // Prints out the contents of the TGeoTubeSeg
    void PrintTubeSeg(const TGeoTubeSeg *a) const;
    // Prints out the contents of the TGeoConeSeg
    void PrintConeSeg(const TGeoConeSeg *a) const;
    // Prints out the contents of the TGeoBBox
    void PrintBBox(const TGeoBBox *a) const;
    // Draws a 2D crossection of the TGeoPcon r,z section
    void DrawCrossSection(const TGeoPcon *p,Int_t fillc=7,Int_t fills=4050,
                          Int_t linec=3,Int_t lines=1,Int_t linew=4,
                          Int_t markc=2,Int_t marks=4,
                          Float_t marksize=1.0) const;
    // Compute the angles where a line intersects a circle.
    Bool_t AngleOfIntersectionWithLine(Double_t x0,Double_t y0,
                                       Double_t x1,Double_t y1,
                                       Double_t xc,Double_t yc,
                                       Double_t rc,Double_t &t0,
                                       Double_t &t1)const;
    void AnglesForRoundedCorners(Double_t x0,Double_t y0,Double_t r0,
                                 Double_t x1,Double_t y1,Double_t r1,
                                 Double_t &t0,Double_t &t1)const;
    // Function to create figure needed for this class' documentation
     void MakeFigure1(Double_t x0=0.0,Double_t y0=0.0,Double_t r0=2.0,
                      Double_t x1=-4.0,Double_t y1=-2.0,Double_t r1=1.0);
  protected:

    // Units, Convert from k?? to cm,degree,GeV,seconds,
    static const Double_t fgkmicron; // Convert micron to TGeom's cm.
    static const Double_t fgkmm; // Convert mm to TGeom's cm.
    static const Double_t fgkcm; // Convert cm to TGeom's cm.
    static const Double_t fgkDegree; //Convert degrees to TGeom's degrees
    static const Double_t fgkRadian; //To Radians

  private:
    Double_t AngleForRoundedCorners0(Double_t dx,Double_t dy,
                                     Double_t sdr)const;
    Double_t AngleForRoundedCorners1(Double_t dx,Double_t dy,
                                     Double_t sdr)const;
    Int_t fDebug; //! Debug flag/level
    ClassDef(AliITSv11Geometry,1) // Base class for ITS v11 geometry
};

#endif
Commit	Line	Data
172b0d90	1	#ifndef ALIITSV11GEOMETRY_H
	2	#define ALIITSV11GEOMETRY_H
	3	/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	4	* See cxx source for full Copyright notice */
	5
	6	/*
	7	$Id$
	8	*/
166d14ba	9
	10	/*
	11	Base class for defining large parts of the ITS geometry, v11.
	12	*/
172b0d90	13	#include <TObject.h>
	14	class TGeoArb8;
	15	class TGeoPcon;
	16	class TGeoTube;
	17	class TGeoTubeSeg;
	18	class TGeoConeSeg;
	19	class TGeoBBox;
	20
	21	class AliITSv11Geometry : public TObject {
	22	public:
bf86817c	23	AliITSv11Geometry(){fDebug=kTRUE;};
bf86817c	24	AliITSv11Geometry(Bool_t debug){fDebug=debug;};
172b0d90	25	virtual ~AliITSv11Geometry(){};
172b0d90	26	//
166d14ba	27	// Sets the debug flag for debugging output
db486a6e	28	void SetDebug(Int_t level=5){fDebug=level;}
166d14ba	29	// Clears the debug flag so no debugging output will be generated
db486a6e	30	void SetNoDebug(){fDebug=0;}
166d14ba	31	// Returns the debug flag value
db486a6e	32	Bool_t GetDebug(Int_t level=1)const {return fDebug>=level;}
166d14ba	33	//
	34	// Static functions
	35	//
	36	// Define Trig functions for use with degrees (standerd TGeo angles).
	37	// Sine function
cee918ed	38	Double_t SinD(Double_t deg)const{return TMath::Sin(deg*TMath::DegToRad());}
166d14ba	39	// Cosine function
cee918ed	40	Double_t CosD(Double_t deg)const{return TMath::Cos(deg*TMath::DegToRad());}
166d14ba	41	// Tangent function
cee918ed	42	Double_t TanD(Double_t deg)const{return TMath::Tan(deg*TMath::DegToRad());}
166d14ba	43	// Given the line, defined by the two points (x0,y0) and (x1,y1) and the
166d14ba	44	// point x, return the value of y.
cee918ed	45	Double_t Yfrom2Points(Double_t x0,Double_t y0,
cee918ed	46	Double_t x1,Double_t y1,Double_t x)const;
166d14ba	47	// Given the line, defined by the two points (x0,y0) and (x1,y1) and the
166d14ba	48	// point y, return the value of x.
cee918ed	49	Double_t Xfrom2Points(Double_t x0,Double_t y0,
cee918ed	50	Double_t x1,Double_t y1,Double_t y)const;
166d14ba	51	// Given 2 points from a TGeoPcon(z and Rmax) finds Rmax at given z
cee918ed	52	Double_t RmaxFrom2Points(const TGeoPcon *p,Int_t i1,Int_t i2,
cee918ed	53	Double_t z)const;
166d14ba	54	// Given 2 points from a TGeoPcon(z and Rmin) finds Rmin at given z
cee918ed	55	Double_t RminFrom2Points(const TGeoPcon *p,Int_t i1,Int_t i2,
cee918ed	56	Double_t z)const;
166d14ba	57	// Give two points in the array ar and az, returns the value r
166d14ba	58	// corresponding z along the line defined by those two points
cee918ed	59	Double_t RFrom2Points(const Double_t ar,const Double_t az,
cee918ed	60	Int_t i1,Int_t i2,Double_t z)const;
166d14ba	61	// Given 2 points from a TGeoPcon(z and Rmax) finds z at given Rmin
cee918ed	62	Double_t Zfrom2MinPoints(const TGeoPcon *p,Int_t i1,Int_t i2,
cee918ed	63	Double_t r)const;
166d14ba	64	// Given 2 points from a TGeoPcon(z and Rmax) finds z at given Rmax
cee918ed	65	Double_t Zfrom2MaxPoints(const TGeoPcon *p,Int_t i1,Int_t i2,
cee918ed	66	Double_t r)const;
166d14ba	67	// Give two points in the array ar and az, returns the value z
166d14ba	68	// corresponding r along the line defined by those two points
cee918ed	69	Double_t Zfrom2Points(const Double_t az,const Double_t ar,
cee918ed	70	Int_t i1,Int_t i2,Double_t r)const;
166d14ba	71	// Given 1 point from a TGeoPcon(z and Rmax) the angle tc returns r for
	72	// a given z, an offset (distnace perpendicular to line at angle tc) of
	73	// th may be applied.
cee918ed	74	Double_t RmaxFromZpCone(const TGeoPcon *p,int ip,Double_t tc,
	75	Double_t z,Double_t th=0.0)const;
	76	Double_t RFromZpCone(const Double_t ar,const Double_t az,int ip,
	77	Double_t tc,Double_t z,Double_t th=0.0)const;
166d14ba	78	// Given 1 point from a TGeoPcon(z and Rmin) the angle tc returns r for
	79	// a given z, an offset (distnace perpendicular to line at angle tc) of
	80	// th may be applied.
cee918ed	81	Double_t RminFromZpCone(const TGeoPcon *p,Int_t ip,Double_t tc,
cee918ed	82	Double_t z,Double_t th=0.0)const;
166d14ba	83	// Given 1 point from a TGeoPcon(z and Rmax) the angle tc returns z for
	84	// a given Rmax, an offset (distnace perpendicular to line at angle tc) of
	85	// th may be applied.
cee918ed	86	Double_t ZFromRmaxpCone(const TGeoPcon *p,int ip,Double_t tc,
cee918ed	87	Double_t r,Double_t th=0.0)const;
166d14ba	88	// General Outer cone Surface equation for z.
cee918ed	89	Double_t ZFromRmaxpCone(const Double_t ar,const Double_t az,
166d14ba	90	Int_t ip,Double_t tc,Double_t r,
cee918ed	91	Double_t th=0.0)const;
166d14ba	92	// Given 1 point from a TGeoPcon(z and Rmin) the angle tc returns z for
	93	// a given Rmin, an offset (distnace perpendicular to line at angle tc) of
	94	// th may be applied.
cee918ed	95	Double_t ZFromRminpCone(const TGeoPcon *p,int ip,Double_t tc,
cee918ed	96	Double_t r,Double_t th=0.0)const;
166d14ba	97	// Given two lines defined by the points i1, i2,i3 in the TGeoPcon
	98	// class p that intersect at point p->GetZ(i2) return the point z,r
	99	// that is Cthick away in the TGeoPcon class q. If points i1=i2
	100	// and max == kTRUE, then p->GetRmin(i1) and p->GetRmax(i2) are used.
	101	// if points i2=i3 and max=kTRUE then points p->GetRmax(i2) and
	102	// p->GetRmin(i3) are used. If i2=i3 and max=kFALSE, then p->GetRmin(i2)
	103	// and p->GetRmax(i3) are used.
cee918ed	104	void InsidePoint(const TGeoPcon *p,Int_t i1,Int_t i2,Int_t i3,
cee918ed	105	Double_t Cthick,TGeoPcon *q,Int_t j1,Bool_t max)const;
166d14ba	106	// Given two intersecting lines defined by the points (x0,y0), (x1,y1) and
	107	// (x1,y1), (x1,y2) {intersecting at (x1,y1)} the point (x,y) a distance
	108	// c away is returned such that two lines a distance c away from the
	109	// lines defined above intersect at (x,y).
cee918ed	110	void InsidePoint(Double_t x0,Double_t y0,Double_t x1,Double_t y1,
172b0d90	111	Double_t x2,Double_t y2,Double_t c,
cee918ed	112	Double_t &x,Double_t &y)const;
166d14ba	113	// Given a initial point z0,r0, the initial angle theta0, and the radius
	114	// of curvature, returns the point z1, r1 at the angle theta1. Theta
	115	// measured from the r axis in the clock wise direction [degrees].
cee918ed	116	void RadiusOfCurvature(Double_t rc,Double_t theta0,Double_t z0,
	117	Double_t r0,Double_t theta1,Double_t &z1,
	118	Double_t &r1)const;
166d14ba	119	//
	120	// Output functions for debugging
	121	//
	122	// Prints out the contents of the TGeoArb8
	123	void PrintArb8(const TGeoArb8 *a) const;
	124	// Prints out the contents of the TGeoPcon
	125	void PrintPcon(const TGeoPcon *a) const;
	126	// Prints out the contents of the TGeoTube
	127	void PrintTube(const TGeoTube *a) const;
	128	// Prints out the contents of the TGeoTubeSeg
	129	void PrintTubeSeg(const TGeoTubeSeg *a) const;
	130	// Prints out the contents of the TGeoConeSeg
	131	void PrintConeSeg(const TGeoConeSeg *a) const;
	132	// Prints out the contents of the TGeoBBox
	133	void PrintBBox(const TGeoBBox *a) const;
	134	// Draws a 2D crossection of the TGeoPcon r,z section
	135	void DrawCrossSection(const TGeoPcon *p,Int_t fillc=7,Int_t fills=4050,
	136	Int_t linec=3,Int_t lines=1,Int_t linew=4,
	137	Int_t markc=2,Int_t marks=4,
	138	Float_t marksize=1.0) const;
db486a6e	139	// Compute the angles where a line intersects a circle.
	140	Bool_t AngleOfIntersectionWithLine(Double_t x0,Double_t y0,
	141	Double_t x1,Double_t y1,
	142	Double_t xc,Double_t yc,
	143	Double_t rc,Double_t &t0,
	144	Double_t &t1)const;
	145	void AnglesForRoundedCorners(Double_t x0,Double_t y0,Double_t r0,
	146	Double_t x1,Double_t y1,Double_t r1,
	147	Double_t &t0,Double_t &t1)const;
	148	// Function to create figure needed for this class' documentation
	149	void MakeFigure1(Double_t x0=0.0,Double_t y0=0.0,Double_t r0=2.0,
	150	Double_t x1=-4.0,Double_t y1=-2.0,Double_t r1=1.0);
cee918ed	151	protected:
	152
	153	// Units, Convert from k?? to cm,degree,GeV,seconds,
db486a6e	154	static const Double_t fgkmicron; // Convert micron to TGeom's cm.
a98296c1	155	static const Double_t fgkmm; // Convert mm to TGeom's cm.
db486a6e	156	static const Double_t fgkcm; // Convert cm to TGeom's cm.
a98296c1	157	static const Double_t fgkDegree; //Convert degrees to TGeom's degrees
a98296c1	158	static const Double_t fgkRadian; //To Radians
cee918ed	159
172b0d90	160	private:
db486a6e	161	Double_t AngleForRoundedCorners0(Double_t dx,Double_t dy,
	162	Double_t sdr)const;
	163	Double_t AngleForRoundedCorners1(Double_t dx,Double_t dy,
	164	Double_t sdr)const;
	165	Int_t fDebug; //! Debug flag/level
172b0d90	166	ClassDef(AliITSv11Geometry,1) // Base class for ITS v11 geometry
	167	};
	168
172b0d90	169	#endif