My Processing code

gistfile1.java

float randShift=.2; 
int quadW=15; 
int quadH = quadW; 
float[] q={-quadW/2,-quadH/2,quadW,quadH}; 

void setup() { 
    size(900,600);
    background(255); 
    smooth(); 
    noStroke(); 
    colorMode(RGB, 255);
    /*generateatablestructureof 
    quadsprogressivleyaddingmore 
    randomizationto eachquad*/ 
    for(int i=0,k=1;i<height-quadH; i+=quadH, k++){ 
    /* resetting the transformation matrix 
    keeps the translations from continually 
    accumulating. Try commenting out the 
    resetMatrix() call to see the effect. */ 
    resetMatrix(); 
    translate(0,quadH*k); 
    for (int j=0; j<width-quadW; j+=quadW){ 
        translate(quadW, 0); 
        println(quadW);
        fill(random(0,255),random(0,255),random(0,255)); 
        //r(k)isafunctioncall 
        quad(q[0]+r(k), q[1]+r(k), 
            q[0]+q[2]+r(k), q[1]+r(k),  
            q[0]+q[2]+r(k),q[1]+q[3]+r(k), 
            q[0]+r(k), q[1]+q[3]+r(k)); 
    } 
   } 
} 
float r(int i){ 
    return random(-i*randShift, i*randShift); 
}

gistfile2.java

//http://f.hatena.ne.jp/yanxu/20081104190832
void setup(){
  size(700,500);
  background(0);
  //strokeWeight(.1);

  int cols=20;
  int rows=20;
  
  for(int i=0;i<cols;i++){
    for(int j=0;j<rows;j++){
      int x=i*30+30;
      int y=j*20+30;
      drawRect(x,y);
    }
  }
  
}

void drawRect(int x,int y){
  stroke(random(100,255),random(100,255),random(100,255));
  strokeWeight(random(.1,3));
  int w=20;
  int h=10;
  /*
  line(x,y,x+w,y);
  line(x+w,y,x+w,y+h);
  line(x,y+h,x+w,y+h);
  line(x,y+h,x,y);
  */
  line(x+random(-4,4),y+random(-4,4),x+w+random(-4,4),y+random(-4,4));
  line(x+w+random(-4,4),y+random(-4,4),x+w+random(-4,4),y+h+random(-4,4));
  line(x+random(-4,4),y+h+random(-4,4),x+w+random(-4,4),y+h+random(-4,4));
  line(x+random(-4,4),y+h+random(-4,4),x+random(-4,4),y+random(-4,4));
}

randomColors.java

void setup() {
    int w = 20;
    int h = 20;
    int skip = w+10;
    int cols = 30;
    int rows = 20;
    
    size(skip*cols,skip*rows);
    background(255);
    colorMode(RGB,255);
    smooth();
    
    for(int i=1;i<cols;i++){
        for(int j=1;j<rows;j++){
            color c = color(random(0,255),random(0,255),random(0,255));
            fill(c);
            rect(i*skip,j*skip,w,h);
        }
    }
}

wuxiaad.java

void setup() {
  size(570,160);
  background(255);
  
  PImage model = loadImage("/Users/yanxu/Desktop/rousi.jpg");//190*239
  image(model,-30,-45,180,220);
  filter(BLUR,4);
  
/*  for(int i=0;i<model.width-40;i+=5){
    for(int j=0;j<model.height-65;j+=5){
      color c= model.get(i,j);
      fill(c);
      rect(i+155,j,5,5);
    }
  }
*/

  PImage ad1 = loadImage("/Users/yanxu/Desktop/ad1.jpg");//320*240
  image(ad1,width-300,-30);

  PImage ad_text = loadImage("/Users/yanxu/Desktop/ad_text.png");//113*110
  image(ad_text,160,20,100,110);
  
  save("/Users/yanxu/Desktop/wuxia_ad.tif");
}