week02-哭啊轉守為攻

一開始先寫一個按滑鼠背景會變色

void setup(){ size(500,500); } void draw(){ if(mousePressed) background(255,0,0); else background(0,255,0); } 接下來改成類似小畫家的畫線程式

void setup(){ size(500,500); } void draw(){ if(mousePressed) line(mouseX,mouseY,0,0); } 真正變成小畫家

void setup(){ size(500,500); } void draw(){ if(mousePressed) line(mouseX,mouseY,pmouseX,pmouseY); }