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SoEngine.h
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32 
33 #ifndef COIN_SOENGINE_H
34 #define COIN_SOENGINE_H
35 
36 #include <Inventor/fields/SoFieldContainer.h>
37 
38 class SoEngineList;
39 class SoEngineOutput;
40 class SoEngineOutputList;
41 class SoEngineOutputData;
42 
43 class COIN_DLL_API SoEngine : public SoFieldContainer {
45 
46 public:
47  static void initClass(void);
48  static void initClasses(void);
49  static SoType getClassTypeId(void);
50 
51  void evaluateWrapper(void);
52 
53  virtual int getOutputs(SoEngineOutputList & l) const;
54  SoEngineOutput * getOutput(const SbName & outputname) const;
55  SbBool getOutputName(const SoEngineOutput * output, SbName & outputname) const;
56  virtual const SoEngineOutputData * getOutputData(void) const = 0;
57  static SoEngine * getByName(const SbName & name);
58  static int getByName(const SbName & name, SoEngineList & el);
59 
60  SbBool isNotifying(void) const;
61  virtual void notify(SoNotList * nl);
62 
63  SoEngine * copy(void) const;
64  virtual SoFieldContainer * copyThroughConnection(void) const;
65  SbBool shouldCopy(void) const;
66 
67  virtual void writeInstance(SoOutput * out);
68 
69 
70 protected:
71  SoEngine(void);
72  virtual ~SoEngine(void);
73  virtual void evaluate(void) = 0;
74 
75  virtual SbBool readInstance(SoInput * in, unsigned short flags);
76  virtual void inputChanged(SoField * which);
77 
78  static const SoFieldData ** getInputDataPtr(void);
79  static const SoEngineOutputData ** getOutputDataPtr(void);
80 
81  void writeOutputTypes(SoOutput * out);
82 
83 private:
84  virtual void destroy(void); // overrides SoBase::destroy()
85 
86  static SoType classTypeId;
87 
88  enum InternalEngineFlags {
89  FLAG_ISNOTIFYING = (1 << 0),
90  FLAG_ISDIRTY = (1 << 1)
91  };
92 
93  unsigned int flags;
94 
95  // needed for handling connections from SoEngineOutput
96  friend class SoEngineOutput;
97  void setDirty(void);
98 };
99 
100 #if !defined(COIN_INTERNAL)
101 #include <Inventor/engines/SoEngineOutput.h>
102 #endif // COIN_INTERNAL
103 
104 #endif // !COIN_SOENGINE_H

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