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#ifndef _CONSTRAINTALGORITHM_H_ | 
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#define _CONSTRAINTALGORITHM_H_ | 
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 | 
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#include <iostream> | 
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#include <map> | 
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#include "CallbackFunctor.hpp" | 
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#include "TypeInfo.hpp" | 
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#include "ConstraintIterator.hpp" | 
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using namespace std; | 
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 | 
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class ConstraintManager; | 
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class ConstraintPair; | 
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class JointConstraintPair; | 
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class DistanceConstraintPair; | 
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class SimInfo; | 
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 | 
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enum ConsAlgoStatus{ | 
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  consPairHandlerFail = -3, | 
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  consElemHandlerFail = -2, | 
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  consFail = -1, | 
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  consSuccess = 0, | 
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  consAlready = 1}; | 
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 | 
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//////////////////////////////////////////////////////////////////////////////// | 
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//Declaration of ConstraintAlgorithm | 
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//////////////////////////////////////////////////////////////////////////////// | 
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//base class of constraint algorithm | 
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//Actuallly we encount a triple dispatch problem here, something like  | 
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//ConstrainPair(ConsPairType*, ConsElementType1*, ConsElementType2*) | 
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//To solve this problem, we apply visitor pattern and standard double dispatch technique  | 
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class ConstraintAlgorithm{ | 
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 | 
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  public: | 
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    ~ConstraintAlgorithm(); | 
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    virtual void doConstrain(); | 
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 | 
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    //using RTTI (Run Time Type Information) to dispatch  | 
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    int doConstrainPair(ConstraintPair* consPair); | 
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    void registerCallback(const TypeInfo& ti, CallbackFunctor* functor); | 
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    void unRegister(TypeInfo& ti); | 
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    bool haveError() { return error;} | 
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  protected: | 
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    ConstraintAlgorithm(SimInfo* rhs); | 
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 | 
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    SimInfo* info; | 
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    ConstraintPairIterator* cpIter; | 
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    ConstraintElementIterator* ceIter; | 
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 | 
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    map<TypeInfo, CallbackFunctor*> callbackMap; | 
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 | 
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    bool error; | 
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}; | 
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 | 
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//////////////////////////////////////////////////////////////////////////////// | 
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//Declaration of ConsAlgoFramework | 
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//////////////////////////////////////////////////////////////////////////////// | 
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class ConsAlgoFramework{ | 
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  public: | 
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    ~ConsAlgoFramework(); | 
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     | 
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    void doPreConstraint(); | 
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 | 
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  protected: | 
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    ConsAlgoFramework(SimInfo* rhs); | 
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 | 
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  private: | 
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    ConstraintElementIterator* ceIter; | 
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     | 
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}; | 
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 | 
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#endif //endif _CONSTRAINTALGORITHM_H_ |