按下滑鼠 可以畫畫 背景可換顏色

void setup(){

  size(800,600);

}

void draw(){

  if(mousePressed)

  line(mouseX, mouseY, pmouseX, pmouseY);

}

void setup(){

  size(800,600);

  background(#EA0E42);

}

void draw(){

  if(mousePressed)

  line(mouseX, mouseY, pmouseX, pmouseY);

}