Springing

void setup(){

  size(600,600);

  background(255);

  smooth();

}

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int x= 12;

float i= 0;

 float r;

int a=600;

int b=20;

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void draw() 

{

    noStroke();

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    if (i<=150){ //no of times it runs

    pushMatrix();

    translate(a,a);

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    // r= 1+(4*10); //radius

    fill(random(0,50),random(0,50),100,40);

    noStroke();

   x-=5;

    rotate(radians(x)); //angle of rotation of each circle wrt each other

    stroke(3,200-i);

    noFill();

    ellipse(0,i,54,54);

    popMatrix();

    i=i+0.25; //increment

    a-=0.1; //translation point

    //b+=0.1;

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}

  } 

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