My Sketch - OpenProcessing

mySketch
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int [] xball = new int [100];
int [] yball = new int [100];
int [] xrect = new int [100];
int [] yrect = new int [100];
int radius = 0;
int [] radius1 = new int [100];
int [] radius2 = new int [100];
int [] x = new int [100]; 
int [] y = new int [100]; 
int [] z = new int [100]; 
​
void setup(){
 size(1000,1000);
 for(int i = 0; i < 100; i++){
   xball[i] = (int)random(1000);
   yball[i]=(int)random(1000);
   xrect[i]=(int)random(1000);
   yrect[i]=(int)random(1000);
   radius1 [i]= (int)random(150);
   radius2 [i]= (int)random(150);
   x [i] = (int)random(255);
   y [i]= (int)random(255);
   z [i]= (int)random(255);
}
}
​
void draw(){
  background(0);
  for(int i = 0; i < 100; i ++){
 fill(x[i],y[i],z[i]);
 radius = (int)dist((float)mouseX,(float)xball[i],(float)mouseY,(float)yball[i])/10;
    ellipse(xball[i],yball[i],radius,radius);
  }
    for(int i = 0; i < 100; i ++){
 fill(x[i],y[i],z[i]);
    rect(xrect[i],yrect[i],radius1[i],radius2[i]);
  }
}
​
void mousePressed(){
   for(int i = 0; i < 100; i++){
   xball[i] = (int)random(1000);
   yball[i]=(int)random(1000);
}
}
​
void keyPressed(){
  if(key == 'w'||key == 'W'){
  for(int i = 0; i < 100; i++){
   radius1 [i]= (int)random(150);
   radius2 [i]= (int)random(150);
   x [i] = (int)random(255);
   y [i]= (int)random(255);
   z [i]= (int)random(255);
}
  
  }
}