PrimitiveShapeVisitor.h

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#ifndef PRIMITIVESHAPEVISITOR_HEADER
#define PRIMITIVESHAPEVISITOR_HEADER
 
#ifndef DLL_LINKAGE
#define DLL_LINKAGE
#endif
 
class DLL_LINKAGE PlanePrimitiveShape;
class DLL_LINKAGE SpherePrimitiveShape;
class DLL_LINKAGE CylinderPrimitiveShape;
class DLL_LINKAGE ConePrimitiveShape;
class DLL_LINKAGE TorusPrimitiveShape;
 
class DLL_LINKAGE PrimitiveShapeVisitor
{
public:
    virtual ~PrimitiveShapeVisitor() {}
    virtual void Visit(const PlanePrimitiveShape& plane) = 0;
    virtual void Visit(const SpherePrimitiveShape& sphere) = 0;
    virtual void Visit(const CylinderPrimitiveShape& cylinder) = 0;
    virtual void Visit(const ConePrimitiveShape& cone) = 0;
    virtual void Visit(const TorusPrimitiveShape& torus) = 0;
};
 
template< class BaseT >
class PrimitiveShapeVisitorShell
    : public BaseT
{
public:
    PrimitiveShapeVisitorShell() {}
 
    template< class T >
    PrimitiveShapeVisitorShell(const T& t)
        : BaseT(t)
    {}
 
    template< class A, class B >
    PrimitiveShapeVisitorShell(const A& a, const B& b)
        : BaseT(a, b)
    {}
 
    void Visit(const PlanePrimitiveShape& plane)
    {
        BaseT::Visit(plane);
    }
 
    void Visit(const SpherePrimitiveShape& sphere)
    {
        BaseT::Visit(sphere);
    }
 
    void Visit(const CylinderPrimitiveShape& cylinder)
    {
        BaseT::Visit(cylinder);
    }
 
    void Visit(const ConePrimitiveShape& cone)
    {
        BaseT::Visit(cone);
    }
 
    void Visit(const TorusPrimitiveShape& torus)
    {
        BaseT::Visit(torus);
    }
};
 
#endif