processing in 實踐

gistfile1.java

//show photos
PImage photo_a;
PImage photo_b;
PImage photo_c;
int mode = 0;

void setup() //設定
{
  size(300, 300);
  photo_a = loadImage("a.jpg");
  photo_b = loadImage("b.jpg");
  photo_c = loadImage("c.jpg");
  frameRate(10);
}

void draw() //繪圖
{ 
  background(0);
  if (mode == 0) image(photo_a, 30, 10, 30, 30);
  if (mode == 1) image(photo_b, 30, 50, 30, 30);
  if (mode == 2) image(photo_c, 30, 90, 30, 30);
}
void mousePressed() //滑鼠按下
{  
  mode = mode + 1; 
  println("mode:"+mode);
  if (mode == 3) mode = 0;
  println(mouseX);
}