/usr/include/opencascade/Vrml_ShapeHints.hxx is in libopencascade-visualization-dev 6.5.0.dfsg-2build1.
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// 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 _Vrml_ShapeHints_HeaderFile
#define _Vrml_ShapeHints_HeaderFile
#ifndef _Standard_HeaderFile
#include <Standard.hxx>
#endif
#ifndef _Standard_Macro_HeaderFile
#include <Standard_Macro.hxx>
#endif
#ifndef _Vrml_VertexOrdering_HeaderFile
#include <Vrml_VertexOrdering.hxx>
#endif
#ifndef _Vrml_ShapeType_HeaderFile
#include <Vrml_ShapeType.hxx>
#endif
#ifndef _Vrml_FaceType_HeaderFile
#include <Vrml_FaceType.hxx>
#endif
#ifndef _Standard_Real_HeaderFile
#include <Standard_Real.hxx>
#endif
#ifndef _Standard_OStream_HeaderFile
#include <Standard_OStream.hxx>
#endif
//! defines a ShapeHints node of VRML specifying properties of geometry and its appearance. <br>
//! The ShapeHints node indicates that IndexedFaceSets are solid, contain ordered vertices, or <br>
//! contain convex faces. <br>
//! These hints allow VRML implementations to optimize certain rendering features. <br>
//! Optimizations that may be performed include enabling back-face culling and disabling <br>
//! two-sided lighting. For example, if an object is solid and has ordered vertices, an <br>
//! implementation may turn on backface culling and turn off two-sided lighting. To ensure <br>
//! that an IndexedFaceSet can be viewed from either direction, set shapeType to be <br>
//! UNKNOWN_SHAPE_TYPE. <br>
//! If you know that your shapes are closed and will alwsys be viewed from the outside, set <br>
//! vertexOrdering to be either CLOCKWISE or COUNTERCLOCKWISE (depending on <br>
//! how you built your object), and set shapeType to be SOLID. Placing this near the top of <br>
//! your VRML file will allow the scene to be rendered much faster. <br>
//! The ShapeHints node also affects how default normals are generated. When an <br>
//! IndexedFaceSet has to generate default normals, it uses the creaseAngle field to determine <br>
//! which edges should be smoothly shaded and which ones should have a sharp crease. The <br>
//! crease angle is the angle between surface normals on adjacent polygons. For example, a <br>
//! crease angle of .5 radians (the default value) means that an edge between two adjacent <br>
//! polygonal faces will be smooth shaded if the normals to the two faces form an angle that is <br>
//! less than .5 radians (about 30 degrees). Otherwise, it will be faceted. <br>
class Vrml_ShapeHints {
public:
void* operator new(size_t,void* anAddress)
{
return anAddress;
}
void* operator new(size_t size)
{
return Standard::Allocate(size);
}
void operator delete(void *anAddress)
{
if (anAddress) Standard::Free((Standard_Address&)anAddress);
}
Standard_EXPORT Vrml_ShapeHints(const Vrml_VertexOrdering aVertexOrdering = Vrml_UNKNOWN_ORDERING,const Vrml_ShapeType aShapeType = Vrml_UNKNOWN_SHAPE_TYPE,const Vrml_FaceType aFaceType = Vrml_CONVEX,const Standard_Real aAngle = 0.5);
Standard_EXPORT void SetVertexOrdering(const Vrml_VertexOrdering aVertexOrdering) ;
Standard_EXPORT Vrml_VertexOrdering VertexOrdering() const;
Standard_EXPORT void SetShapeType(const Vrml_ShapeType aShapeType) ;
Standard_EXPORT Vrml_ShapeType ShapeType() const;
Standard_EXPORT void SetFaceType(const Vrml_FaceType aFaceType) ;
Standard_EXPORT Vrml_FaceType FaceType() const;
Standard_EXPORT void SetAngle(const Standard_Real aAngle) ;
Standard_EXPORT Standard_Real Angle() const;
Standard_EXPORT Standard_OStream& Print(Standard_OStream& anOStream) const;
protected:
private:
Vrml_VertexOrdering myVertexOrdering;
Vrml_ShapeType myShapeType;
Vrml_FaceType myFaceType;
Standard_Real myAngle;
};
// other Inline functions and methods (like "C++: function call" methods)
#endif
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