// This file is generated by WOK (CPPExt). // Please do not edit this file; modify original file instead. // The copyright and license terms as defined for the original file apply to // this header file considered to be the "object code" form of the original source. #ifndef _HLRBRep_Algo_HeaderFile #define _HLRBRep_Algo_HeaderFile #ifndef _Standard_HeaderFile #include #endif #ifndef _Standard_DefineHandle_HeaderFile #include #endif #ifndef _Handle_HLRBRep_Algo_HeaderFile #include #endif #ifndef _HLRBRep_InternalAlgo_HeaderFile #include #endif #ifndef _Handle_MMgt_TShared_HeaderFile #include #endif #ifndef _Standard_Integer_HeaderFile #include #endif class TopoDS_Shape; class MMgt_TShared; //! A framework to compute a shape as seen in a projection plane. This is done by
//! calculating the visible and the hidden parts of the shape.
//! HLRBRep_Algo works with three types of entity:
//! - shapes to be visualized
//! - edges in these shapes (these edges are
//! the basic entities which will be visualized or hidden), and
//! - faces in these shapes which hide the edges.
//! HLRBRep_Algo is based on the principle of comparing each edge of the shape to be
//! visualized with each of its faces, and calculating the visible and the hidden parts of each edge.
//! For a given projection, HLRBRep_Algo calculates a set of lines characteristic of the
//! object being represented. It is also used in conjunction with the
//! HLRBRep_HLRToShape extraction utilities, which reconstruct a new, simplified shape
//! from a selection of calculation results. This new shape is made up of edges, which
//! represent the shape visualized in the projection.
//! HLRBRep_Algo takes the shape itself into account whereas HLRBRep_PolyAlgo
//! works with a polyhedral simplification of the shape. When you use HLRBRep_Algo, you
//! obtain an exact result, whereas, when you use HLRBRep_PolyAlgo, you reduce
//! computation time but obtain polygonal segments. In the case of complicated
//! shapes, HLRBRep_Algo may be time-consuming.
//! An HLRBRep_Algo object provides a framework for:
//! - defining the point of view
//! - identifying the shape or shapes to be visualized
//! - calculating the outlines
//! - calculating the visible and hidden lines of the shape.
//! Warning
//! - Superimposed lines are not eliminated by this algorithm.
//! - There must be no unfinished objects inside the shape you wish to visualize.
//! - Points are not treated.
//! - Note that this is not the sort of algorithm used in generating shading, which
//! calculates the visible and hidden parts of each face in a shape to be visualized by
//! comparing each face in the shape with every other face in the same shape.
class HLRBRep_Algo : public HLRBRep_InternalAlgo { public: //! Constructs an empty framework for the
//! calculation of visible and hidden lines of a shape in a projection.
//! Use the function:
//! - Projector to define the point of view
//! - Add to select the shape or shapes to be visualized
//! - Update to compute the outlines of the shape, and
//! - Hide to compute the visible and hidden lines of the shape.
Standard_EXPORT HLRBRep_Algo(); Standard_EXPORT HLRBRep_Algo(const Handle(HLRBRep_Algo)& A); //! add the Shape .
Standard_EXPORT void Add(const TopoDS_Shape& S,const Handle(MMgt_TShared)& SData,const Standard_Integer nbIso = 0) ; //! Adds the shape S to this framework, and
//! specifies the number of isoparameters nbiso desired in visualizing S.
//! You may add as many shapes as you wish. Use the function Add once for each shape.
Standard_EXPORT void Add(const TopoDS_Shape& S,const Standard_Integer nbIso = 0) ; //! return the index of the Shape and
//! return 0 if the Shape is not found.
Standard_EXPORT Standard_Integer Index(const TopoDS_Shape& S) ; //! nullify all the results of OutLiner from HLRTopoBRep.
Standard_EXPORT void OutLinedShapeNullify() ; DEFINE_STANDARD_RTTI(HLRBRep_Algo) protected: private: }; // other Inline functions and methods (like "C++: function call" methods) #endif