Alyson Marshall

sinewave wave;
int t, cycle;
float A, f;
boolean save;
void setup() {
  size(900, 600);
  background(0);
  fill(255);
  stroke(255);
  t = 1;  
  A = height/2;
  f = 0.1;
  cycle = 1;
  save = false;
}

void draw() {
  background(0);
  wave = new sinewave(A, f, t, cycle);
  wave.setup();
  wave.draw();
  println("Save: "+save+", Amplitude: "+A+", Frequency: "+f+", Time: "+t+", Cycle: "+cycle);
}

void mousePressed() {
  if(mouseButton == LEFT){
    cycle++; //if left mouse button is pressed add wave
  }
  if(mouseButton == RIGHT && cycle > 1){
    cycle--; //if right mouse button is pressed remove wave
  }
}

void keyPressed() {
  if(key == 'a'){
    A++; //press 'a' key to increase wave height
    if(save == true){
      saveFrame("sine-###.png");
    }
  }
  if(key == 's' && A > 1){
    if(save == true){ 
      saveFrame("sine-###.png");
    }
    A--; //press 's' key to decrease wave height
  }
  if(key == 'f'){
    f+=0.1; //press 'f' key to increase number of dots
    if(save == true){
      saveFrame("sine-###.png");
    }
  }
  if(key == 'd' && f > 0.1){
    if(save == true){
      saveFrame("sine-###.png");
    }
    f-=0.1;//press 'd' key to increase number of dots
  }
  if(key == 't'){
    if(save == true){
      saveFrame("sine-###.png");
    }
    t++; //press 't' key to increase wave width
  }
  if(key == 'r' && t > 1){
    if(save == true){
      saveFrame("sine-###.png");
    }
    t--; //press 'r' key to decrease wave width
  }
  if(key == ' '){
    if(save == false){
      save = true; //if space bar is pressed save image
    }
    else{
      save = false;
    }
  }
}
class sinewave {
    float x[];
    float y[];
    float A, f, t;
    int cycle, c;
    int max;  
  sinewave(float _A, float _f, float _t, int _cycle){
    A = _A;
    f = _f;
    t = _t;
    cycle = _cycle;
    c = 1;
  }
  void setup() {
    max = (width/int(t))*cycle;
    x = new float[max];
    y = new float[max];

  
    for(int i = 0; i < max; i++){
      x[i] = i * t;
      if(x[i] > width){
        if(x[i] % width == 0){
          c++;
        }
        x[i] -= width*c;
      }
    }
  
    for(int j = 0; j < max; j++){
      float ytemp = A * sin(j * f);
      y[j] = map(ytemp, -height, height, 0, height);
    }
  }
  void draw() {
    for(int i = 0; i < x.length; i++){
      fill(255);
      stroke(255);
      ellipse(x[i], y[i], 1, 1);
    }
  }
}