SoGate.h

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#ifndef COIN_SOGATE_H
#define COIN_SOGATE_H
 
#include <Inventor/engines/SoSubEngine.h>
#include <Inventor/fields/SoMField.h>
#include <Inventor/fields/SoSFBool.h>
#include <Inventor/fields/SoSFTrigger.h>
 
class SoEngineOutput;
 
 
class COIN_DLL_API SoGate : public SoEngine {
  typedef SoEngine inherited;
 
  SO_ENGINE_HEADER(SoGate);
 
public:
  static void initClass(void);
  SoGate(SoType type);
 
  SoSFBool enable;
  SoSFTrigger trigger;
  SoMField * input;
 
  SoEngineOutput * output;
 
protected:
  virtual void inputChanged(SoField * which);
 
private:
  SoGate(void);
  virtual ~SoGate(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);
 
  // SoGate 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_SOGATE_H