class TGLParametricEquation: public TNamed


 A parametric surface is a surface defined by a parametric equation, involving
 two parameters (u, v):

 S(u, v) = (x(u, v), y(u, v), z(u, v)).
 For example, "limpet torus" surface can be defined as:
    x = cos(u) / (sqrt(2) + sin(v))
    y = sin(u) / (sqrt(2) + sin(v))
    z = 1 / (sqrt(2) + cos(v)),
 where -pi <= u <= pi, -pi <= v <= pi.


 TGLParametricEquation * eq =
    new TGLParametricEquation("Limpet_torus", "cos(u) / (sqrt(2.) + sin(v))",
                              "sin(u) / (sqrt(2.) + sin(v))",
                              "1 / (sqrt(2) + cos(v))");

 $ROOTSYS/tutorials/gl/glparametric.C contains more examples.

 Parametric equations can be specified:
    1. by string expressions, as with TF2, but with 'u' instead of 'x' and
       'v' instead of 'y'.
    2. by function - see ParametricEquation_t declaration.

Function Members (Methods)

public:
TGLParametricEquation(const TString& name, ParametricEquation_t equation, Double_t uMin, Double_t uMax, Double_t vMin, Double_t vMax)
TGLParametricEquation(const TString& name, const TString& xEquation, const TString& yEquation, const TString& zEquation, Double_t uMin, Double_t uMax, Double_t vMin, Double_t vMax)
~TGLParametricEquation()
voidTObject::AbstractMethod(const char* method) const
virtual voidTObject::AppendPad(Option_t* option = "")
virtual voidTObject::Browse(TBrowser* b)
static TClass*Class()
virtual const char*TObject::ClassName() const
virtual voidTNamed::Clear(Option_t* option = "")
virtual TObject*TNamed::Clone(const char* newname = "") const
virtual Int_tTNamed::Compare(const TObject* obj) const
virtual voidTNamed::Copy(TObject& named) const
virtual voidTObject::Delete(Option_t* option = "")
virtual Int_tDistancetoPrimitive(Int_t px, Int_t py)
virtual voidTObject::Draw(Option_t* option = "")
virtual voidTObject::DrawClass() const
virtual TObject*TObject::DrawClone(Option_t* option = "") const
virtual voidTObject::Dump() const
virtual voidTObject::Error(const char* method, const char* msgfmt) const
voidEvalVertex(TGLVertex3& newVertex, Double_t u, Double_t v) const
virtual voidTObject::Execute(const char* method, const char* params, Int_t* error = 0)
virtual voidTObject::Execute(TMethod* method, TObjArray* params, Int_t* error = 0)
virtual voidExecuteEvent(Int_t event, Int_t px, Int_t py)
virtual voidTObject::Fatal(const char* method, const char* msgfmt) const
virtual voidTNamed::FillBuffer(char*& buffer)
virtual TObject*TObject::FindObject(const char* name) const
virtual TObject*TObject::FindObject(const TObject* obj) const
virtual Option_t*TObject::GetDrawOption() const
static Long_tTObject::GetDtorOnly()
virtual const char*TObject::GetIconName() const
virtual const char*TNamed::GetName() const
virtual char*GetObjectInfo(Int_t px, Int_t py) const
static Bool_tTObject::GetObjectStat()
virtual Option_t*TObject::GetOption() const
virtual const char*TNamed::GetTitle() const
virtual UInt_tTObject::GetUniqueID() const
Rgl::Range_tGetURange() const
Rgl::Range_tGetVRange() const
virtual Bool_tTObject::HandleTimer(TTimer* timer)
virtual ULong_tTNamed::Hash() const
virtual voidTObject::Info(const char* method, const char* msgfmt) const
virtual Bool_tTObject::InheritsFrom(const char* classname) const
virtual Bool_tTObject::InheritsFrom(const TClass* cl) const
virtual voidTObject::Inspect() const
voidTObject::InvertBit(UInt_t f)
virtual TClass*IsA() const
Bool_tIsConstrained() const
virtual Bool_tTObject::IsEqual(const TObject* obj) const
virtual Bool_tTObject::IsFolder() const
Bool_tIsModified() const
Bool_tTObject::IsOnHeap() const
virtual Bool_tTNamed::IsSortable() const
Bool_tTObject::IsZombie() const
virtual voidTNamed::ls(Option_t* option = "") const
voidTObject::MayNotUse(const char* method) const
virtual Bool_tTObject::Notify()
static voidTObject::operator delete(void* ptr)
static voidTObject::operator delete(void* ptr, void* vp)
static voidTObject::operator delete[](void* ptr)
static voidTObject::operator delete[](void* ptr, void* vp)
void*TObject::operator new(size_t sz)
void*TObject::operator new(size_t sz, void* vp)
void*TObject::operator new[](size_t sz)
void*TObject::operator new[](size_t sz, void* vp)
virtual voidPaint(Option_t* option)
virtual voidTObject::Pop()
virtual voidTNamed::Print(Option_t* option = "") const
virtual Int_tTObject::Read(const char* name)
virtual voidTObject::RecursiveRemove(TObject* obj)
voidTObject::ResetBit(UInt_t f)
virtual voidTObject::SaveAs(const char* filename = "", Option_t* option = "") const
virtual voidTObject::SavePrimitive(basic_ostream<char,char_traits<char> >& out, Option_t* option = "")
voidTObject::SetBit(UInt_t f)
voidTObject::SetBit(UInt_t f, Bool_t set)
voidSetConstrained(Bool_t c)
virtual voidTObject::SetDrawOption(Option_t* option = "")
static voidTObject::SetDtorOnly(void* obj)
voidSetModified(Bool_t m)
virtual voidTNamed::SetName(const char* name)
virtual voidTNamed::SetNameTitle(const char* name, const char* title)
static voidTObject::SetObjectStat(Bool_t stat)
virtual voidTNamed::SetTitle(const char* title = "")
virtual voidTObject::SetUniqueID(UInt_t uid)
virtual voidShowMembers(TMemberInspector& insp, char* parent)
virtual Int_tTNamed::Sizeof() const
virtual voidStreamer(TBuffer& b)
voidStreamerNVirtual(TBuffer& b)
virtual voidTObject::SysError(const char* method, const char* msgfmt) const
Bool_tTObject::TestBit(UInt_t f) const
Int_tTObject::TestBits(UInt_t f) const
virtual voidTObject::UseCurrentStyle()
virtual voidTObject::Warning(const char* method, const char* msgfmt) const
virtual Int_tTObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0)
virtual Int_tTObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0) const
protected:
virtual voidTObject::DoError(int level, const char* location, const char* fmt, va_list va) const
voidTObject::MakeZombie()
private:
TGLParametricEquation(const TGLParametricEquation&)
TGLParametricEquation&operator=(const TGLParametricEquation&)

Data Members

public:
enum TObject::EStatusBits { kCanDelete
kMustCleanup
kObjInCanvas
kIsReferenced
kHasUUID
kCannotPick
kNoContextMenu
kInvalidObject
};
enum TObject::[unnamed] { kIsOnHeap
kNotDeleted
kZombie
kBitMask
kSingleKey
kOverwrite
kWriteDelete
};
protected:
TStringTNamed::fNameobject identifier
TStringTNamed::fTitleobject title
private:
Bool_tfConstrained
ParametricEquation_tfEquation
Bool_tfModified
auto_ptr<TGLHistPainter>fPainter
pair<double,double>fURange
pair<double,double>fVRange
auto_ptr<TF2>fXEquation
auto_ptr<TF2>fYEquation
auto_ptr<TF2>fZEquation

Class Charts

Inheritance Inherited Members Includes Libraries
Class Charts

Function documentation

TGLParametricEquation(const TString& name, const TString& xEquation, const TString& yEquation, const TString& zEquation, Double_t uMin, Double_t uMax, Double_t vMin, Double_t vMax)
Surface is defined by three strings.
ROOT does not use exceptions in ctors,
so, I have to use MakeZombie to let
external user know about errors.
TGLParametricEquation(const TString& name, ParametricEquation_t equation, Double_t uMin, Double_t uMax, Double_t vMin, Double_t vMax)
Surface defined by user's function (see ParametricEquation_t declaration in TGLParametricEquation.h)
Rgl::Range_t GetURange()
[uMin, uMax]
Rgl::Range_t GetVRange()
[vMin, vMax]
Bool_t IsConstrained()
Check is constrained.
void SetConstrained(Bool_t c)
Set constrained.
Bool_t IsModified()
Something was changed in parametric equation (or constrained option was changed).
void SetModified(Bool_t m)
Set modified.
void EvalVertex(TGLVertex3& newVertex, Double_t u, Double_t v) const
Calculate vertex.
Int_t DistancetoPrimitive(Int_t px, Int_t py)
Check, if parametric surface is under cursor.
void ExecuteEvent(Int_t event, Int_t px, Int_t py)
Pass event to painter.
char * GetObjectInfo(Int_t px, Int_t py) const
No object info yet.
void Paint(Option_t* option)
Delegate paint.
TGLParametricEquation(const TString& name, const TString& xEquation, const TString& yEquation, const TString& zEquation, Double_t uMin, Double_t uMax, Double_t vMin, Double_t vMax)

Author: Timur Pocheptsov 26/01/2007
Last update: root/gl:$Id: TGLParametric.h 20882 2007-11-19 11:31:26Z rdm $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *

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