particle.h

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#pragma once
#ifndef DSY_PARTICLE_H
#define DSY_PARTICLE_H
 
#include "Filters/svf.h"
#include <stdint.h>
#include <cstdlib>
#ifdef __cplusplus
 
namespace daisysp
{
class Particle
{
  public:
    Particle() {}
    ~Particle() {}
 
    void Init(float sample_rate);
 
    float Process();
 
    float GetNoise();
 
    void SetFreq(float frequency);
 
    void SetResonance(float resonance);
 
    void SetRandomFreq(float freq);
 
    void SetDensity(float density);
 
    void SetGain(float gain);
 
    void SetSpread(float spread);
 
    void SetSync(bool sync);
 
  private:
    static constexpr float kRandFrac  = 1.f / (float)RAND_MAX;
    static constexpr float kRatioFrac = 1.f / 12.f;
    float                  sample_rate_;
    float aux_, frequency_, density_, gain_, spread_, resonance_;
    bool  sync_;
 
 
    float rand_phase_;
    float rand_freq_;
 
 
    float pre_gain_;
    Svf   filter_;
};
} // namespace daisysp
#endif
#endif