// Created on: 1993-09-21 // Created by: Christian CAILLET // Copyright (c) 1993-1999 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_ToolLocation_HeaderFile #define _IGESData_ToolLocation_HeaderFile #include #include #include #include #include #include #include class IGESData_IGESModel; class IGESData_Protocol; class IGESData_IGESEntity; class gp_GTrsf; class gp_Trsf; class IGESData_ToolLocation; DEFINE_STANDARD_HANDLE(IGESData_ToolLocation, Standard_Transient) //! This Tool determines and gives access to effective Locations //! of IGES Entities as defined by the IGES Norm. These Locations //! can be for each Entity : //! - on one part, explicitly defined by a Transf in Directory //! Part (this Transf can be itself compound); if not defined, //! no proper Transformation is defined //! - on the other part, implicitly defined by a reference from //! another Entity : its Parent //! Both implicit and explicit locations are combinable. //! //! Implicit definition can be itself defined, either through the //! definition of an Entity (i.e. a Composite Curve references //! a list of Curves), or by a specific Associativity, of type //! SingleParentEntity, by which the Location of the Parent is //! applied to the Childs defined by this Associativity. //! Remark that a Transf itself has no Location, but it can be //! compound //! //! This is a TShared object, then it is easier to use in an //! interactive session class IGESData_ToolLocation : public Standard_Transient { public: //! Creates a ToolLocation on a given Model, filled with the help //! of a Protocol (which allows to known Entities referenced by //! other ones) Standard_EXPORT IGESData_ToolLocation(const Handle(IGESData_IGESModel)& amodel, const Handle(IGESData_Protocol)& protocol); //! Does the effective work of determining Locations of Entities Standard_EXPORT void Load(); //! Sets a precision for the Analysis of Locations //! (default by constructor is 1.E-05) Standard_EXPORT void SetPrecision (const Standard_Real prec); //! Sets the "Reference" information for as being //! Sets an Error Status if already set (see method IsAmbiguous) Standard_EXPORT void SetReference (const Handle(IGESData_IGESEntity)& parent, const Handle(IGESData_IGESEntity)& child); //! Sets the "Associativity" information for as being //! (it must be the Parent itself, not the Associativity) Standard_EXPORT void SetParentAssoc (const Handle(IGESData_IGESEntity)& parent, const Handle(IGESData_IGESEntity)& child); //! Resets all information about dependences for Standard_EXPORT void ResetDependences (const Handle(IGESData_IGESEntity)& child); //! Unitary action which defines Entities referenced by //! (except those in Directory Part and Associativities List) //! as Dependent (their Locations are related to that of ) Standard_EXPORT void SetOwnAsDependent (const Handle(IGESData_IGESEntity)& ent); //! Returns True if is kind of TransfEntity. Then, it has //! no location, while it can be used to define a Location) Standard_EXPORT Standard_Boolean IsTransf (const Handle(IGESData_IGESEntity)& ent) const; //! Returns True if is an Associativity (IGES Type 402). //! Then, Location does not apply. Standard_EXPORT Standard_Boolean IsAssociativity (const Handle(IGESData_IGESEntity)& ent) const; //! Returns True if has a Transformation Matrix in proper //! (referenced from its Directory Part) Standard_EXPORT Standard_Boolean HasTransf (const Handle(IGESData_IGESEntity)& ent) const; //! Returns the Explicit Location defined by the Transformation //! Matrix of . Identity if there is none Standard_EXPORT gp_GTrsf ExplicitLocation (const Handle(IGESData_IGESEntity)& ent) const; //! Returns True if more than one Parent has been determined for //! , by adding direct References and Associativities Standard_EXPORT Standard_Boolean IsAmbiguous (const Handle(IGESData_IGESEntity)& ent) const; //! Returns True if is dependent from one and only one other //! Entity, either by Reference or by Associativity Standard_EXPORT Standard_Boolean HasParent (const Handle(IGESData_IGESEntity)& ent) const; //! Returns the unique Parent recorded for . //! Returns a Null Handle if there is none Standard_EXPORT Handle(IGESData_IGESEntity) Parent (const Handle(IGESData_IGESEntity)& ent) const; //! Returns True if the Parent, if there is one, is defined by //! a SingleParentEntity Associativity //! Else, if HasParent is True, it is by Reference Standard_EXPORT Standard_Boolean HasParentByAssociativity (const Handle(IGESData_IGESEntity)& ent) const; //! Returns the effective Location of the Parent of , if //! there is one : this Location is itself given as compound //! according dependences on the Parent, if there are some. //! Returns an Identity Transformation if no Parent is recorded. Standard_EXPORT gp_GTrsf ParentLocation (const Handle(IGESData_IGESEntity)& ent) const; //! Returns the effective Location of an Entity, i.e. the //! composition of its proper Transformation Matrix (returned by //! Transf) and its Parent's Location (returned by ParentLocation) Standard_EXPORT gp_GTrsf EffectiveLocation (const Handle(IGESData_IGESEntity)& ent) const; //! Analysis a Location given as a GTrsf, by trying to convert it //! to a Trsf (i.e. to a True Location of which effect is //! described by an Isometry or a Similarity) //! Works with the Precision given by default or by SetPrecision //! Calls ConvertLocation (see below) Standard_EXPORT Standard_Boolean AnalyseLocation (const gp_GTrsf& loc, gp_Trsf& result) const; //! Conversion of a Location, from GTrsf form to Trsf form //! Works with a precision given as argument. //! Returns True if the Conversion is possible, (hence, //! contains the converted location), False else //! , if given, indicates the unit in which is defined //! in meters. It concerns the translation part (to be converted. //! //! As a class method, it can be called separately Standard_EXPORT static Standard_Boolean ConvertLocation (const Standard_Real prec, const gp_GTrsf& loc, gp_Trsf& result, const Standard_Real uni = 1); DEFINE_STANDARD_RTTIEXT(IGESData_ToolLocation,Standard_Transient) protected: private: Standard_Real theprec; Handle(IGESData_IGESModel) themodel; Interface_GeneralLib thelib; TColStd_Array1OfInteger therefs; TColStd_Array1OfInteger theassocs; }; #endif // _IGESData_ToolLocation_HeaderFile