Week1 0913

1.


2.


3.
變色APP 背景綠色 滑鼠點時變紅色


void setup(){  //unity use
  size(800,600);
}
void draw(){
  if(mousePressed) background(250,0,0);
     else background(0,250,0);
}


4.
小畫家 畫線


if(mousePressed)  line(mouseX,mouseY,pmouseX,pmouseY);
//mousePressed 點下去才畫

5.



if(key=='3') strokeWeight(3); //畫筆粗細
if(key=='r') stroke(0,250,0);//畫筆顏色