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00001 /***************************************************/ 00014 /***************************************************/ 00015 00016 #ifndef STK_ENVELOPE_H 00017 #define STK_ENVELOPE_H 00018 00019 #include "Generator.h" 00020 00021 class Envelope : public Generator 00022 { 00023 public: 00024 00026 Envelope(void); 00027 00029 virtual ~Envelope(void); 00030 00032 virtual void keyOn(void); 00033 00035 virtual void keyOff(void); 00036 00038 void setRate(StkFloat rate); 00039 00041 void setTime(StkFloat time); 00042 00044 virtual void setTarget(StkFloat target); 00045 00047 virtual void setValue(StkFloat value); 00048 00050 virtual int getState(void) const; 00051 00053 virtual StkFloat tick(void); 00054 00056 virtual StkFloat *tick( StkFloat *vector, unsigned int vectorSize ); 00057 00059 00065 virtual StkFrames& tick( StkFrames& frames, unsigned int channel = 1 ); 00066 00067 protected: 00068 StkFloat value_; 00069 StkFloat target_; 00070 StkFloat rate_; 00071 int state_; 00072 }; 00073 00074 #endif
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