SoEngine.h

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#ifndef COIN_SOENGINE_H
#define COIN_SOENGINE_H
 
#include <Inventor/fields/SoFieldContainer.h>
 
class SoEngineList;
class SoEngineOutput;
class SoEngineOutputList;
class SoEngineOutputData;
 
class COIN_DLL_API SoEngine : public SoFieldContainer {
  typedef SoFieldContainer inherited;
 
public:
  static void initClass(void);
  static void initClasses(void);
  static SoType getClassTypeId(void);
 
  void evaluateWrapper(void);
 
  virtual int getOutputs(SoEngineOutputList & l) const;
  SoEngineOutput * getOutput(const SbName & outputname) const;
  SbBool getOutputName(const SoEngineOutput * output, SbName & outputname) const;
  virtual const SoEngineOutputData * getOutputData(void) const = 0;
  static SoEngine * getByName(const SbName & name);
  static int getByName(const SbName & name, SoEngineList & el);
 
  SbBool isNotifying(void) const;
  virtual void notify(SoNotList * nl);
 
  SoEngine * copy(void) const;
  virtual SoFieldContainer * copyThroughConnection(void) const;
  SbBool shouldCopy(void) const;
 
  virtual void writeInstance(SoOutput * out);
 
 
protected:
  SoEngine(void);
  virtual ~SoEngine(void);
  virtual void evaluate(void) = 0;
 
  virtual SbBool readInstance(SoInput * in, unsigned short flags);
  virtual void inputChanged(SoField * which);
 
  static const SoFieldData ** getInputDataPtr(void);
  static const SoEngineOutputData ** getOutputDataPtr(void);
 
  void writeOutputTypes(SoOutput * out);
 
private:
  virtual void destroy(void); // overrides SoBase::destroy()
 
  static SoType classTypeId;
 
  enum InternalEngineFlags {
    FLAG_ISNOTIFYING = (1 << 0),
    FLAG_ISDIRTY = (1 << 1)
  };
 
  unsigned int flags;
 
  // needed for handling connections from SoEngineOutput
  friend class SoEngineOutput;
  void setDirty(void);
};
 
#if !defined(COIN_INTERNAL)
#include <Inventor/engines/SoEngineOutput.h>
#endif // COIN_INTERNAL
 
#endif // !COIN_SOENGINE_H