bands.pde

//controls:
//click to freeze or unfreeze
//click s, w, or b to change stroke color

//Imports needed
import ddf.minim.analysis.*;
import ddf.minim.*;

//object needed to access microphone
AudioInput input;

//works with input to access microphone sound
Minim minim;
//needed analyze the sound
FFT fft;
//intitialise variables
int bands;
int hi;
int hi2;
int hi3;
int w;
boolean stop = false;
int outline = 0;
int shape = 0;
float s;
float s1;
boolean drift = false;
double focalPoint = 0;

void setup()
{
    
  size(513, 480);
    minim = new Minim(this);
    input = minim.getLineIn();
    //input will be based on your computers input capabilities
    fft = new FFT(input.bufferSize(), input.sampleRate()); 
    bands = 64;
    hi = 0;
    hi2 = 0;
    hi3 = 0;
    background(0);
}

void draw()
{
  if(!stop){//just paint new noise over previous if frozen
    background(0);
  }
    
  stroke(255);
 
  fft.forward(input.mix);
  
  
  //println(fft.specSize());
 
  for(int i=0; i<fft.specSize(); i++){
    
    if(-fft.getBand(i)*10< -100){//determine up or down
       s = fft.getBand(i) * 10;
    }else{
       s = fft.getBand(i) * -20;
    }
    s1 = fft.getBand(i) * -20;
    
    if(drift){
      driftColors(i);
    }else{
      heightColors(i);
    }
    
    //
    
    fill(hi,hi2,hi3);
    if(outline == 0){//determine stroke color
      stroke(hi,hi2,hi3);
    }else if(outline == 1){
      stroke(0);
    }else{
      stroke(255);
    }
    if(shape == 0){
      bubbles(i);
    }else if(shape == 1){
      ellipses(i);
    }
    
    
    
  }
  focalPoint+= -0.5;
  
}
void heightColors(int i){
  if(fft.getBand(i)*10 <= height/10){//determine color by height tier
      hi = 255;
      hi2 = 0;
      hi3 = 0;
    }else if(fft.getBand(i)*10 <= 2*height/10){
      hi = 255;
      hi2 = 242;
      hi3 = 0;
    }else if(fft.getBand(i)*10 <= 3*height/10){
      hi = 0;
      hi2 = 255;
      hi3 = 0;
    }
    else if(fft.getBand(i)*10 <= 4*height/10){
      hi = 0;
      hi2 = 182;
      hi3 = 255;
    }
    else{
      hi = 123;
      hi2 = 0;
      hi3 = 255;
    }
}
void driftColors(int i){
  
  i = (int)(i/(width/32) +focalPoint)%width;
  hi = (int)(Math.sin(0.3*i)*127+128);
  hi2 = (int)(Math.sin(0.3*i + 2)*127+128);
  hi3 = (int)(Math.sin(0.3*i + 4)*127+128);
  
}
void bubbles(int i){
  ellipse(i,height-fft.getBand(i)*10,5,5);
}

void ellipses(int i){
  w = width/bands;
  
  
  
    ellipse(i,height/2,10,s);//draw middle ellipses
    ellipse(width-i,height,10,s1);//draw bottom layer
    ellipse(width-i,0,10,-s1);//draw top layer
    
}
void mousePressed(){//if clicked, switch between frozen and not
  stop = !stop;
}
void keyPressed(){//change stroke color based on key pressed
  if(key == 'q'){//key q = stroke is same color as fill
    outline = 0;
  }else if(key == 'w'){//key w = stroke is black
    outline = 1;
  }else if(key == 'e'){//key e = stroke is white
    outline = 2;
  }else if(key == 'a'){//key a = bubbles
    shape = 0;
  }else if(key == 's'){//key s = 3 layers of ellipses
    shape = 1;
  }else if(key == 'z'){//key z = drift
    drift = !drift;
  }
}