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 // Created on: 1992-04-07
 // Created by: Christian CAILLET
 // Copyright (c) 1992-1999 Matra Datavision
 // Copyright (c) 1999-2014 OPEN CASCADE SAS
 //
 // This file is part of Open CASCADE Technology software library.
 //
 // This library is free software; you can redistribute it and/or modify it under
 // the terms of the GNU Lesser General Public License version 2.1 as published
 // by the Free Software Foundation, with special exception defined in the file
 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
 // distribution for complete text of the license and disclaimer of any warranty.
 //
 // Alternatively, this file may be used under the terms of Open CASCADE
 // commercial license or contractual agreement.
 
 #ifndef _IGESData_IGESEntity_HeaderFile
 #define _IGESData_IGESEntity_HeaderFile
 
 #include <Standard.hxx>
 #include <Standard_Type.hxx>
 
 #include <Standard_Integer.hxx>
 #include <IGESData_DefSwitch.hxx>
 #include <Interface_EntityList.hxx>
 #include <Standard_Transient.hxx>
 #include <IGESData_DefType.hxx>
 #include <IGESData_DefList.hxx>
 #include <Standard_CString.hxx>
 class TCollection_HAsciiString;
 class IGESData_IGESType;
 class IGESData_LineFontEntity;
 class IGESData_LevelListEntity;
 class IGESData_ViewKindEntity;
 class IGESData_TransfEntity;
 class IGESData_LabelDisplayEntity;
 class IGESData_ColorEntity;
 class gp_GTrsf;
 class Interface_EntityIterator;
 
 //! defines root of IGES Entity definition, including Directory
 //! Part, lists of (optional) Properties and Associativities
 class IGESData_IGESEntity : public Standard_Transient
 {
 
 public:
   //! gives IGES typing info (includes "Type" and "Form" data)
   Standard_EXPORT IGESData_IGESType IGESType() const;
 
   //! gives IGES Type Number (often coupled with Form Number)
   Standard_EXPORT int TypeNumber() const;
 
   //! Returns the form number for that
   //! type of an IGES entity. The default form number is 0.
   Standard_EXPORT int FormNumber() const;
 
   //! Returns the Entity which has been recorded for a given
   //! Field Number, i.e. without any cast. Maps with:
   //! 3 : Structure   4 : LineFont     5 : LevelList     6 : View
   //! 7 : Transf(ormation Matrix)      8 : LabelDisplay
   //! 13 : Color.  Other values give a null handle
   //! It can then be of any kind, while specific items have a Type
   Standard_EXPORT occ::handle<IGESData_IGESEntity> DirFieldEntity(const int fieldnum) const;
 
   //! returns True if an IGESEntity is defined with a Structure
   //! (it is normally reserved for certain classes, such as Macros)
   Standard_EXPORT bool HasStructure() const;
 
   //! Returns Structure (used by some types of IGES Entities only)
   //! Returns a Null Handle if Structure is not defined
   Standard_EXPORT occ::handle<IGESData_IGESEntity> Structure() const;
 
   //! Returns the definition status of LineFont
   Standard_EXPORT virtual IGESData_DefType DefLineFont() const;
 
   //! Returns LineFont definition as an Integer (if defined as Rank)
   //! If LineFont is defined as an Entity, returns a negative value
   Standard_EXPORT int RankLineFont() const;
 
   //! Returns LineFont as an Entity (if defined as Reference)
   //! Returns a Null Handle if DefLineFont is not "DefReference"
   Standard_EXPORT occ::handle<IGESData_LineFontEntity> LineFont() const;
 
   //! Returns the definition status of Level
   Standard_EXPORT virtual IGESData_DefList DefLevel() const;
 
   //! Returns the level the entity
   //! belongs to. Returns -1 if the entity belongs to more than one level.
   Standard_EXPORT int Level() const;
 
   //! Returns LevelList if Level is
   //! defined as a list. Returns a null handle if DefLevel is not DefSeveral.
   Standard_EXPORT occ::handle<IGESData_LevelListEntity> LevelList() const;
 
   //! Returns the definition status of
   //! the view. This can be: none, one or several.
   Standard_EXPORT virtual IGESData_DefList DefView() const;
 
   //! Returns the view of this IGES entity.
   //! This view can be a single view or a list of views.
   //! Warning A null handle is returned if the view is not defined.
   Standard_EXPORT occ::handle<IGESData_ViewKindEntity> View() const;
 
   //! Returns the view as a single view
   //! if it was defined as such and not as a list of views.
   //! Warning A null handle is returned if DefView does not have the value DefOne.
   Standard_EXPORT occ::handle<IGESData_ViewKindEntity> SingleView() const;
 
   //! Returns the view of this IGES entity as a list.
   //! Warning A null handle is returned if the
   //! definition status does not have the value DefSeveral.
   Standard_EXPORT occ::handle<IGESData_ViewKindEntity> ViewList() const;
 
   //! Returns True if a Transformation Matrix is defined
   Standard_EXPORT bool HasTransf() const;
 
   //! Returns the Transformation Matrix (under IGES definition)
   //! Returns a Null Handle if there is none
   //! for a more complete use, see Location & CompoundLocation
   Standard_EXPORT occ::handle<IGESData_TransfEntity> Transf() const;
 
   //! Returns True if a LabelDisplay mode is defined for this entity
   Standard_EXPORT bool HasLabelDisplay() const;
 
   //! Returns the Label Display
   //! Associativity Entity if there is one. Returns a null handle if there is none.
   Standard_EXPORT occ::handle<IGESData_LabelDisplayEntity> LabelDisplay() const;
 
   //! gives Blank Status (0 visible, 1 blanked)
   Standard_EXPORT int BlankStatus() const;
 
   //! gives Subordinate Switch (0-1-2-3)
   Standard_EXPORT int SubordinateStatus() const;
 
   //! gives Entity's Use Flag (0 to 5)
   Standard_EXPORT int UseFlag() const;
 
   //! gives Hierarchy status (0-1-2)
   Standard_EXPORT int HierarchyStatus() const;
 
   //! Returns the LineWeight Number (0 not defined), see also LineWeight
   Standard_EXPORT int LineWeightNumber() const;
 
   //! Returns the true Line Weight, computed from LineWeightNumber and
   //! Global Parameter in the Model by call to SetLineWeight
   Standard_EXPORT double LineWeight() const;
 
   //! Returns the definition status of Color.
   Standard_EXPORT virtual IGESData_DefType DefColor() const;
 
   //! Returns the color definition as
   //! an integer value if the color was defined as a rank.
   //! Warning A negative value is returned if the color was defined as an entity.
   Standard_EXPORT int RankColor() const;
 
   //! Returns the IGES entity which
   //! describes the color of the entity.
   //! Returns a null handle if this entity was defined as an integer.
   Standard_EXPORT occ::handle<IGESData_ColorEntity> Color() const;
 
   //! returns "reserved" alphanumeric values res1 and res2
   //! res1 and res2 have to be reserved as Character[9 at least]
   //! (remark : their content is changed)
   //! returned values are ended by null character in 9th
   //! returned Boolean is False if res1 and res2 are blank, true else
   Standard_EXPORT bool CResValues(char* res1, char* res2) const;
 
   //! Returns true if a short label is defined.
   //! A short label is a non-blank 8-character string.
   Standard_EXPORT bool HasShortLabel() const;
 
   //! Returns the label value for this IGES entity as a string.
   //! Warning If the label is blank, this string is null.
   Standard_EXPORT occ::handle<TCollection_HAsciiString> ShortLabel() const;
 
   //! Returns true if a subscript number is defined.
   //! A subscript number is an integer used to identify a label.
   Standard_EXPORT virtual bool HasSubScriptNumber() const;
 
   //! Returns the integer subscript number used to identify this IGES entity.
   //! Warning 0 is returned if no subscript number is defined for this IGES entity.
   Standard_EXPORT int SubScriptNumber() const;
 
   //! Initializes a directory field as an Entity of any kind
   //! See DirFieldEntity for more details
   Standard_EXPORT void InitDirFieldEntity(const int                               fieldnum,
                                           const occ::handle<IGESData_IGESEntity>& ent);
 
   //! Initializes Transf, or erases it if <ent> is given Null
   Standard_EXPORT void InitTransf(const occ::handle<IGESData_TransfEntity>& ent);
 
   //! Initializes View, or erases it if <ent> is given Null
   Standard_EXPORT void InitView(const occ::handle<IGESData_ViewKindEntity>& ent);
 
   //! Initializes LineFont : if <ent> is not Null, it gives LineFont,
   //! else <rank> gives or erases (if zero) RankLineFont
   Standard_EXPORT void InitLineFont(const occ::handle<IGESData_LineFontEntity>& ent,
                                     const int                                   rank = 0);
 
   //! Initializes Level : if <ent> is not Null, it gives LevelList,
   //! else <val> gives or erases (if zero) unique Level
   Standard_EXPORT void InitLevel(const occ::handle<IGESData_LevelListEntity>& ent,
                                  const int                                    val = 0);
 
   //! Initializes Color data : if <ent> is not Null, it gives Color,
   //! else <rank> gives or erases (if zero) RankColor
   Standard_EXPORT void InitColor(const occ::handle<IGESData_ColorEntity>& ent, const int rank = 0);
 
   //! Initializes the Status of Directory Part
   Standard_EXPORT void InitStatus(const int blank,
                                   const int subordinate,
                                   const int useflag,
                                   const int hierarchy);
 
   //! Sets a new Label to an IGES Entity
   //! If <sub> is given, it sets value of SubScriptNumber
   //! else, SubScriptNumber is erased
   Standard_EXPORT void SetLabel(const occ::handle<TCollection_HAsciiString>& label,
                                 const int                                    sub = -1);
 
   //! Initializes various data (those not yet seen above), or erases
   //! them if they are given as Null (Zero for <weightnum>) :
   //! <str> for Structure, <lab> for LabelDisplay, and
   //! <weightnum> for WeightNumber
   Standard_EXPORT void InitMisc(const occ::handle<IGESData_IGESEntity>&         str,
                                 const occ::handle<IGESData_LabelDisplayEntity>& lab,
                                 const int                                       weightnum);
 
   //! Returns True if an entity has one and only one parent, defined
   //! by a SingleParentEntity Type Associativity (explicit sharing).
   //! Thus, implicit sharing remains defined at model level
   //! (see class ToolLocation)
   Standard_EXPORT bool HasOneParent() const;
 
   //! Returns the Unique Parent (in the sense given by HasOneParent)
   //! Error if there is none or several
   Standard_EXPORT occ::handle<IGESData_IGESEntity> UniqueParent() const;
 
   //! Returns Location given by Transf in Directory Part (see above)
   //! It must be considered for local definition : if the Entity is
   //! set in a "Parent", that one can add its one Location, but this
   //! is not taken in account here : see CompoundLocation for that.
   //! If no Transf is defined, returns Identity
   //! If Transf is itself compound, gives the final result
   Standard_EXPORT gp_GTrsf Location() const;
 
   //! Returns Location considered for Vectors, i.e. without its
   //! Translation Part. As Location, it gives local definition.
   Standard_EXPORT gp_GTrsf VectorLocation() const;
 
   //! Returns Location by taking in account a Parent which has its
   //! own Location : that one will be combined to that of <me>
   //! The Parent is considered only if HasOneParent is True,
   //! else it is ignored and CompoundLocation = Location
   Standard_EXPORT gp_GTrsf CompoundLocation() const;
 
   //! says if a Name is defined, as Short Label or as Name Property
   //! (Property is looked first, else ShortLabel is considered)
   Standard_EXPORT bool HasName() const;
 
   //! returns Name value as a String (Property Name or ShortLabel)
   //! if SubNumber is defined, it is concatenated after ShortLabel
   //! as follows label(number). Ignored with a Property Name
   Standard_EXPORT occ::handle<TCollection_HAsciiString> NameValue() const;
 
   //! Returns True if the Entity is defined with an Associativity
   //! list, even empty (that is, file contains its length 0)
   //! Else, the file contained NO idencation at all about this list.
   Standard_EXPORT bool ArePresentAssociativities() const;
 
   //! gives number of recorded associativities (0 no list defined)
   Standard_EXPORT int NbAssociativities() const;
 
   //! Returns the Associativity List under the form of an EntityIterator.
   Standard_EXPORT Interface_EntityIterator Associativities() const;
 
   //! gives how many Associativities have a given type
   Standard_EXPORT int NbTypedAssociativities(const occ::handle<Standard_Type>& atype) const;
 
   //! returns the Associativity of a given Type (if only one exists)
   //! Error if none or more than one
   Standard_EXPORT occ::handle<IGESData_IGESEntity> TypedAssociativity(
     const occ::handle<Standard_Type>& atype) const;
 
   //! Sets "me" in the Associativity list of another Entity
   Standard_EXPORT void Associate(const occ::handle<IGESData_IGESEntity>& ent) const;
 
   //! Resets "me" from the Associativity list of another Entity
   Standard_EXPORT void Dissociate(const occ::handle<IGESData_IGESEntity>& ent) const;
 
   //! Returns True if the Entity is defined with a Property list,
   //! even empty (that is, file contains its length 0)
   //! Else, the file contained NO idencation at all about this list
   Standard_EXPORT bool ArePresentProperties() const;
 
   //! Gives number of recorded properties (0 no list defined)
   Standard_EXPORT int NbProperties() const;
 
   //! Returns Property List under the form of an EntityIterator
   Standard_EXPORT Interface_EntityIterator Properties() const;
 
   //! gives how many Properties have a given type
   Standard_EXPORT int NbTypedProperties(const occ::handle<Standard_Type>& atype) const;
 
   //! returns the Property of a given Type
   //! Error if none or more than one
   Standard_EXPORT occ::handle<IGESData_IGESEntity> TypedProperty(
     const occ::handle<Standard_Type>& atype,
     const int                         anum = 0) const;
 
   //! Adds a Property in the list
   Standard_EXPORT void AddProperty(const occ::handle<IGESData_IGESEntity>& ent);
 
   //! Removes a Property from the list
   Standard_EXPORT void RemoveProperty(const occ::handle<IGESData_IGESEntity>& ent);
 
   //! computes and sets "true" line weight according IGES rules from
   //! global data MaxLineWeight (maxv) and LineWeightGrad (gradw),
   //! or sets it to defw (Default) if LineWeightNumber is null
   Standard_EXPORT void SetLineWeight(const double defw, const double maxw, const int gradw);
 
   friend class IGESData_ReadWriteModule;
   friend class IGESData_GeneralModule;
   friend class IGESData_IGESReaderTool;
   friend class IGESData_DirChecker;
 
   DEFINE_STANDARD_RTTIEXT(IGESData_IGESEntity, Standard_Transient)
 
 protected:
   //! prepares lists of optional data, set values to defaults
   Standard_EXPORT IGESData_IGESEntity();
 
   //! Initializes Type and Form Numbers to new values. Reserved for
   //! special uses
   Standard_EXPORT void InitTypeAndForm(const int typenum, const int formnum);
 
   //! Loads a complete, already loaded, List of Asociativities
   //! (used during Read or Copy Operations)
   Standard_EXPORT void LoadAssociativities(const Interface_EntityList& list);
 
   //! Loads a complete, already loaded, List of Properties
   //! (used during Read or Copy Operations)
   Standard_EXPORT void LoadProperties(const Interface_EntityList& list);
 
   //! Removes all properties in once
   Standard_EXPORT void ClearProperties();
 
 private:
   //! Clears specific IGES data
   Standard_EXPORT void Clear();
 
   //! Adds an Associativity in the list (called by Associate only)
   Standard_EXPORT void AddAssociativity(const occ::handle<IGESData_IGESEntity>& ent);
 
   //! Removes an Associativity from the list (called by Dissociate)
   Standard_EXPORT void RemoveAssociativity(const occ::handle<IGESData_IGESEntity>& ent);
 
   //! Removes all associativities in once
   Standard_EXPORT void ClearAssociativities();
 
   int                                   theType;
   int                                   theForm;
   occ::handle<IGESData_IGESEntity>      theStructure;
   IGESData_DefSwitch                    theDefLineFont;
   occ::handle<IGESData_IGESEntity>      theLineFont;
   int                                   theDefLevel;
   occ::handle<IGESData_IGESEntity>      theLevelList;
   occ::handle<IGESData_IGESEntity>      theView;
   occ::handle<IGESData_IGESEntity>      theTransf;
   occ::handle<IGESData_IGESEntity>      theLabDisplay;
   int                                   theStatusNum;
   int                                   theLWeightNum;
   double                                theLWeightVal;
   IGESData_DefSwitch                    theDefColor;
   occ::handle<IGESData_IGESEntity>      theColor;
   char                                  theRes1[9];
   char                                  theRes2[9];
   occ::handle<TCollection_HAsciiString> theShortLabel;
   int                                   theSubScriptN;
   Interface_EntityList                  theAssocs;
   Interface_EntityList                  theProps;
 };
 
 #endif // _IGESData_IGESEntity_HeaderFile

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