int numSegments = 10;
  float[] x = new float[numSegments];
  float[] y = new float[numSegments];
  float[] angle = new float[numSegments];
  float segLength = 20;
  float targetX, targetY;
  
  void setup() {
    size(200, 200);
    smooth(); 
    strokeWeight(20.0);
    stroke(0, 100);
    x[x.length-1] = 0;     // Set base x-coordinate
    y[x.length-1] = height;  // Set base y-coordinate
  }
  
  void draw() {
    background(226);
    
    reachSegment(0, mouseX, mouseY);
    for(int i=1; i<numSegments; i++) {
      reachSegment(i, targetX, targetY);
    }
    for(int i=x.length-1; i>=1; i--) {
      positionSegment(i, i-1);  
    } 
    for(int i=0; i<x.length; i++) {
      segment(x[i], y[i], angle[i], (i+1)*2); 
    }
  }
  
  void positionSegment(int a, int b) {
    x[b] = x[a] + cos(angle[a]) * segLength;
    y[b] = y[a] + sin(angle[a]) * segLength; 
  }
  
  void reachSegment(int i, float xin, float yin) {
    float dx = xin - x[i];
    float dy = yin - y[i];
    angle[i] = atan2(dy, dx);  
    targetX = xin - cos(angle[i]) * segLength;
    targetY = yin - sin(angle[i]) * segLength;
  }
  
  void segment(float x, float y, float a, float sw) {
    strokeWeight(sw);
    pushMatrix();
    translate(x, y);
    rotate(a);
    line(0, 0, segLength, 0);
    popMatrix();
  }