gsPatchwiseFunction.h

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#pragma once

#include <gsCore/gsFunction.h>

namespace gismo
{

template <class T>
class gsPatchwiseFunction : public gsFunctionSet<T>
{
public:

    virtual ~gsPatchwiseFunction() { }    

    GISMO_UPTR_FUNCTION_PURE(gsPatchwiseFunction, clone)

    operator const gsFunction<T> & ()
    { 
        return piece(0); 
    }

public:

    virtual const gsFunction<T> & piece(const index_t i) const = 0;

    virtual index_t size() const = 0;

public:

    inline const gsFunction<T> & operator [] (const index_t i) const 
    {
        return piece(i);
    }

    std::ostream &print(std::ostream &os) const
    {
        os << "Patch-wise function.\n";
        return os; 
    }

    friend std::ostream & operator<<(std::ostream &os, const gsPatchwiseFunction &pwf)
    {
        return pwf.print(os);
    }
};

} // namespace gismo