#include "math.h"
float pi = 3.14159265359;
int bi = 2*pi;
float frq = 1;
float ind [384];
float frd = 512;
float amplt = 5;
byte r = 3;
int n = 30;
#define apot 1
#define fpot 2
void setup() {
  Serial.begin(9600);


}

void loop() {
  amplt=analogRead(apot);
  frq=analogRead(fpot)/64;
  
  
  
  
  for (int i = 0; i<frd; i++) {
    switch (r) {
    case 1:
      
      Serial.println(sin ( 2 * pi / frd  * i * frq)*amplt);
    
      delay(1);
      break;
    case 2:
      if (sin (2 * pi / frd  * i *frq)>0){
        Serial.println(amplt);
      }
      else if (sin (2 * pi / frd  *i*frq)<0){
        Serial.println(-1*amplt);
      }
      else if (sin (2 * pi / frd  * i*frq) == 0){
        Serial.println(0);
      }
      delay(3);
      break;
    case 3:
      Serial.println(asin (sin (pi / frd * i*frq))*4/pi*amplt);
      delay(3);
      break;
    case 4:
      //ind[i]=pow((-1),1)/1*sin(pi/frd*i*1)+pow((-1),2)/2*sin(pi/frd*i*2)+pow((-1),3)/3*sin(pi/frd*i*3)+pow((-1),4)/4*sin(pi/frd*i*4)+pow((-1),5)/5*sin(pi/frd*i*5)+pow((-1),6)/6*sin(pi/frd*i*6)+pow((-1),7)/7*sin(pi/frd*i*7)+pow((-1),8)/8*sin(pi/frd*i*8)+pow((-1),9)/9*sin(pi/frd*i*9)+pow((-1),10)/10*sin(pi/frd*i*10)+pow((-1),11)/11*sin(pi/frd*i*11)+pow((-1),12)/12*sin(pi/frd*i*12);
      if (i<frd/2) {
        if (i%2==0) {
          Serial.println(2*(pi / frd * i-floor(pi / frd * i*frq+0.5))*amplt)
        }
        else {
          Serial.println((2*(pi / frd * i-floor(pi / frd *i * frq+0.5))+2*(pi / frd * (i+1) * frq-floor(pi / frd * (i+1) * frq +0.5)))/2*amplt);
        }
      }
      
        
      }

      
      
      break;
    }


    
  }
    

}