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#ifndef COIN_SOCONCATENATE_H
#define COIN_SOCONCATENATE_H

#include <Inventor/engines/SoSubEngine.h>
#include <Inventor/engines/SoEngineOutput.h>
#include <Inventor/fields/SoMField.h>


class COIN_DLL_API SoConcatenate : public SoEngine {
  typedef SoEngine inherited;

  SO_ENGINE_HEADER(SoConcatenate);

  enum { NUMINPUTS = 10 }; // Constant.

public:
  static void initClass(void);
  SoConcatenate(SoType inputType);

  SoMField * input[NUMINPUTS];

  SoEngineOutput * output;

private:
  SoConcatenate(void);
  virtual ~SoConcatenate(void);

  virtual void evaluate(void);

  virtual SbBool readInstance(SoInput * in, unsigned short flags);
  virtual void writeInstance(SoOutput * out);

  void initialize(const SoType inputfieldtype);

  virtual void copyContents(const SoFieldContainer * from,
                            SbBool copyconnections);

  // SoConcatenate instances uses a dynamic set of inputs and outputs,
  // as they are not common for all instances of the class (like for
  // most of the other engines).
  SoFieldData * dynamicinput;
  SoEngineOutputData * dynamicoutput;

  // Avoid a g++/egcs warning due to the private default constructor.
  friend class dummy;
};

#endif // !COIN_SOCONCATENATE_H
