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TGeoParaboloid.h
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1 // @(#)root/geom:$Id$
2 // Author: Mihaela Gheata 20/06/04
3 
4 /*************************************************************************
5  * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
6  * All rights reserved. *
7  * *
8  * For the licensing terms see $ROOTSYS/LICENSE. *
9  * For the list of contributors see $ROOTSYS/README/CREDITS. *
10  *************************************************************************/
11 
12 #ifndef ROOT_TGeoParaboloid
13 #define ROOT_TGeoParaboloid
14 
15 #ifndef ROOT_TGeoBBox
16 #include "TGeoBBox.h"
17 #endif
18 
19 ////////////////////////////////////////////////////////////////////////////
20 //
21 // TGeoParaboloid - Paraboloid class. A paraboloid is the solid bounded by
22 // the following surfaces:
23 // - 2 planes parallel with XY cutting the Z axis at Z=-dz and Z=+dz
24 // - the surface of revolution of a parabola described by:
25 // z = a*(x*x + y*y) + b
26 // The parameters a and b are automatically computed from:
27 // - rlo - the radius of the circle of intersection between the
28 // parabolic surface and the plane z = -dz
29 // - rhi - the radius of the circle of intersection between the
30 // parabolic surface and the plane z = +dz
31 // | -dz = a*rlo*rlo + b
32 // | dz = a*rhi*rhi + b where: rlo != rhi, both >= 0
33 //
34 ////////////////////////////////////////////////////////////////////////////
35 
36 
37 class TGeoParaboloid : public TGeoBBox
38 {
39 private:
40  Double_t fRlo; // radius at z=-dz
41  Double_t fRhi; // radius at z=+dz
42  Double_t fDz; // range on Z axis [-dz, dz]
43  Double_t fA; // quadratic coeff.
44  Double_t fB; // Z value of parabola at x=y=0
45 public:
46  // constructors
49  TGeoParaboloid(const char *name, Double_t rlo, Double_t rhi, Double_t dz);
50  TGeoParaboloid(Double_t *params);
51  // destructor
52  virtual ~TGeoParaboloid();
53  // methods
54  virtual Double_t Capacity() const;
55  virtual void ComputeBBox();
56  virtual void ComputeNormal(const Double_t *point, const Double_t *dir, Double_t *norm);
57  virtual void ComputeNormal_v(const Double_t *points, const Double_t *dirs, Double_t *norms, Int_t vecsize);
58  virtual Bool_t Contains(const Double_t *point) const;
59  virtual void Contains_v(const Double_t *points, Bool_t *inside, Int_t vecsize) const;
61  Double_t DistToParaboloid(const Double_t *point, const Double_t *dir, Bool_t in) const;
62  virtual Double_t DistFromInside(const Double_t *point, const Double_t *dir, Int_t iact=1,
63  Double_t step=TGeoShape::Big(), Double_t *safe=0) const;
64  virtual void DistFromInside_v(const Double_t *points, const Double_t *dirs, Double_t *dists, Int_t vecsize, Double_t *step) const;
65  virtual Double_t DistFromOutside(const Double_t *point, const Double_t *dir, Int_t iact=1,
66  Double_t step=TGeoShape::Big(), Double_t *safe=0) const;
67  virtual void DistFromOutside_v(const Double_t *points, const Double_t *dirs, Double_t *dists, Int_t vecsize, Double_t *step) const;
68  virtual TGeoVolume *Divide(TGeoVolume *voldiv, const char *divname, Int_t iaxis, Int_t ndiv,
69  Double_t start, Double_t step);
70  virtual const TBuffer3D &GetBuffer3D(Int_t reqSections, Bool_t localFrame) const;
71  Double_t GetRlo() const {return fRlo;}
72  Double_t GetRhi() const {return fRhi;}
73  Double_t GetDz() const {return fDz;}
74 
75  virtual void GetBoundingCylinder(Double_t *param) const;
76  virtual TGeoShape *GetMakeRuntimeShape(TGeoShape *mother, TGeoMatrix *mat) const;
77  virtual void GetMeshNumbers(Int_t &nvert, Int_t &nsegs, Int_t &npols) const;
78  virtual Int_t GetNmeshVertices() const;
79  virtual Bool_t GetPointsOnSegments(Int_t /*npoints*/, Double_t * /*array*/) const {return kFALSE;}
80  virtual void InspectShape() const;
81  virtual Bool_t IsCylType() const {return kTRUE;}
82  virtual TBuffer3D *MakeBuffer3D() const;
83  virtual Double_t Safety(const Double_t *point, Bool_t in=kTRUE) const;
84  virtual void Safety_v(const Double_t *points, const Bool_t *inside, Double_t *safe, Int_t vecsize) const;
85  virtual void SavePrimitive(std::ostream &out, Option_t *option = "");
87  virtual void SetDimensions(Double_t *param);
88  virtual void SetPoints(Double_t *points) const;
89  virtual void SetPoints(Float_t *points) const;
90  virtual void SetSegsAndPols(TBuffer3D &buff) const;
91  virtual void Sizeof3D() const;
92 
93  ClassDef(TGeoParaboloid, 1) // paraboloid class
94 
95 };
96 
97 
98 #endif
virtual void InspectShape() const
print shape parameters
virtual void Contains_v(const Double_t *points, Bool_t *inside, Int_t vecsize) const
Check the inside status for each of the points in the array.
virtual Double_t DistFromOutside(const Double_t *point, const Double_t *dir, Int_t iact=1, Double_t step=TGeoShape::Big(), Double_t *safe=0) const
compute distance from outside point to surface of the paraboloid and safe distance ...
float Float_t
Definition: RtypesCore.h:53
const char Option_t
Definition: RtypesCore.h:62
virtual Bool_t IsCylType() const
virtual Int_t GetNmeshVertices() const
Returns number of vertices on the paraboloid mesh.
virtual Double_t DistFromInside(const Double_t *point, const Double_t *dir, Int_t iact=1, Double_t step=TGeoShape::Big(), Double_t *safe=0) const
compute distance from inside point to surface of the paraboloid
int Int_t
Definition: RtypesCore.h:41
bool Bool_t
Definition: RtypesCore.h:59
const Bool_t kFALSE
Definition: Rtypes.h:92
Double_t GetDz() const
Float_t py
Definition: hprod.C:33
Double_t GetRlo() const
virtual ~TGeoParaboloid()
destructor
virtual TGeoVolume * Divide(TGeoVolume *voldiv, const char *divname, Int_t iaxis, Int_t ndiv, Double_t start, Double_t step)
Divide the paraboloid along one axis.
virtual void ComputeBBox()
compute bounding box of the tube
#define ClassDef(name, id)
Definition: Rtypes.h:254
virtual Double_t Capacity() const
Computes capacity of the shape in [length^3].
Double_t GetRhi() const
char * out
Definition: TBase64.cxx:29
virtual void SetDimensions(Double_t *param)
Set paraboloid dimensions starting from an array.
virtual Bool_t GetPointsOnSegments(Int_t, Double_t *) const
Fills array with n random points located on the line segments of the shape mesh.
point * points
Definition: X3DBuffer.c:20
virtual void GetBoundingCylinder(Double_t *param) const
— Fill vector param[4] with the bounding cylinder parameters.
virtual void ComputeNormal_v(const Double_t *points, const Double_t *dirs, Double_t *norms, Int_t vecsize)
Compute the normal for an array o points so that norm.dot.dir is positive Input: Arrays of point coor...
virtual void GetMeshNumbers(Int_t &nvert, Int_t &nsegs, Int_t &npols) const
Returns numbers of vertices, segments and polygons composing the shape mesh.
virtual Double_t Safety(const Double_t *point, Bool_t in=kTRUE) const
Computes the closest distance from given point to this shape.
virtual void DistFromOutside_v(const Double_t *points, const Double_t *dirs, Double_t *dists, Int_t vecsize, Double_t *step) const
Compute distance from array of input points having directions specisied by dirs. Store output in dist...
Generic 3D primitive description class.
Definition: TBuffer3D.h:19
void SetParaboloidDimensions(Double_t rlo, Double_t rhi, Double_t dz)
Set paraboloid dimensions.
virtual void SavePrimitive(std::ostream &out, Option_t *option="")
Save a primitive as a C++ statement(s) on output stream "out".
virtual TBuffer3D * MakeBuffer3D() const
Creates a TBuffer3D describing this shape.
virtual const TBuffer3D & GetBuffer3D(Int_t reqSections, Bool_t localFrame) const
Fills a static 3D buffer and returns a reference.
double Double_t
Definition: RtypesCore.h:55
virtual Bool_t Contains(const Double_t *point) const
test if point is inside the elliptical tube
static Double_t Big()
Definition: TGeoShape.h:98
#define name(a, b)
Definition: linkTestLib0.cpp:5
Float_t px
Definition: hprod.C:33
virtual void DistFromInside_v(const Double_t *points, const Double_t *dirs, Double_t *dists, Int_t vecsize, Double_t *step) const
Compute distance from array of input points having directions specisied by dirs. Store output in dist...
Double_t DistToParaboloid(const Double_t *point, const Double_t *dir, Bool_t in) const
Compute distance from a point to the parabola given by: z = a*rsq + b; rsq = x*x+y*y.
virtual void SetSegsAndPols(TBuffer3D &buff) const
Fill TBuffer3D structure for segments and polygons.
virtual void Sizeof3D() const
const Bool_t kTRUE
Definition: Rtypes.h:91
virtual void ComputeNormal(const Double_t *point, const Double_t *dir, Double_t *norm)
Compute normal to closest surface from POINT.
virtual TGeoShape * GetMakeRuntimeShape(TGeoShape *mother, TGeoMatrix *mat) const
in case shape has some negative parameters, these has to be computed in order to fit the mother ...
virtual Int_t DistancetoPrimitive(Int_t px, Int_t py)
compute closest distance from point px,py to each vertex
double norm(double *x, double *p)
Definition: unuranDistr.cxx:40
virtual void Safety_v(const Double_t *points, const Bool_t *inside, Double_t *safe, Int_t vecsize) const
Compute safe distance from each of the points in the input array.
virtual void SetPoints(Double_t *points) const
Create paraboloid mesh points.