"neat little something" in Processing for DATT 1100

sketch_151111a.pde

void setup() {
  size(480, 480, P2D);
  noStroke();
}

long i = 0;
float x = random(width);
float y = random(height);
long duration = 10;
float prevX = width/2;
float prevY = height/2;
float distance = getDistance();

float getDistance() {
  return sqrt(pow(prevX-x, 2) + pow(prevY-y, 2));
}

void draw() {
  float relativePointInTime = 1.0*i/duration;
  fill(relativePointInTime*255);
  float currentX = relativePointInTime*x + (1-relativePointInTime)*prevX;
  float currentY = relativePointInTime*y + (1-relativePointInTime)*prevY;
  ellipse(currentX, currentY, 80, 80);
  if(i < duration) {
    i++;
  } else {
    i = 0;
    prevX = x;
    prevY = y;
    x = random(width);
    y = random(height);
    distance = getDistance();
  }
}

sketch_151111a_with_recording.pde

import com.hamoid.*;

// Download and install from http://funprogramming.org/VideoExport-for-Processing/
VideoExport videoExport;

void setup() {
  size(480, 480, P2D);
  noStroke();
  
  videoExport = new VideoExport(this, "internetVideo.mp4");

  // The standard frame rate for internet videos is about 
  // 30 frames per second 
  videoExport.setFrameRate(30);
  
  // By default Processing tries to play at 60 frames
  // per second. That means that your exported videos
  // may feel slow, as they are played at half the
  // speed of the original. You may want to play your
  // sketch at 30 fps too, so the sketch and the video
  // run at similar frame rates. To compensate for the 
  // lower frame rate you may have to adjust your sketch
  // to make your objects move faster.
  frameRate(30);
}

long i = 0;
float x = random(width);
float y = random(height);
long duration = 10;
float prevX = width/2;
float prevY = height/2;
float distance = getDistance();

float getDistance() {
  return sqrt(pow(prevX-x, 2) + pow(prevY-y, 2));
}

void draw() {
  float relativePointInTime = 1.0*i/duration;
  fill(relativePointInTime*255);
  float currentX = relativePointInTime*x + (1-relativePointInTime)*prevX;
  float currentY = relativePointInTime*y + (1-relativePointInTime)*prevY;
  ellipse(currentX, currentY, 80, 80);
  videoExport.saveFrame();
  if(i < duration) {
    i++;
  } else {
    i = 0;
    prevX = x;
    prevY = y;
    x = random(width);
    y = random(height);
    distance = getDistance();
  }
}