week03筆記

用一筆畫 畫出東西

程式碼
void setup(){
  size(600,400);
}
void draw(){
  if(mousePressed){
    if(key=='1')stroke(255,0,0); \\改顏色
    if(key=='2')stroke(0,255,0);
    if(key=='3')stroke(0,0,255);
    if(key=='4')strokeWeight(4); \\改粗細
    if(key=='5')strokeWeight(10);
    line (mouseX,mouseY,pmouseX,pmouseY);
  }
}

用滑鼠點擊就可以直接選顏色和條粗細
先設定區域在打指令
程式碼
void setup(){
  size(600,400);
  fill(255,0,0);rect(0,0,50,50); \\\設定區域 選顏色
  fill(0,255,0);rect(0,50,50,50);
  fill(0,0,255);rect(0,100,50,50);
  fill(255,255,0);rect(0,150,50,50);
  fill(0,255,255);rect(0,200,50,50);
  line(25,250,25,250);   \\\畫一個三角形 條粗細
  line(25,250,25-7,400);
  line(25,250,25+7,400);
}
void draw(){
  if(mouseX<50 && mousePressed){
    if(mouseY<50)stroke(255,0,0);
    else if(mouseY<100)stroke(0,255,0);
    else if(mouseY<150)stroke(0,0,255);
    else if(mouseY<200)stroke(255,255,0);
    else if(mouseY<250)stroke(0,255,255);
    else {
      strokeWeight((mouseY-250)/10);
    }
  }
  if(mouseX>50 && mousePressed){
    line (mouseX,mouseY,pmouseX,pmouseY);
  }
}

打不出來的鍵就只能用keycode寫用keycode畫出線程式碼void setup(){  size(600,400);  fill(255,0,0);rect(0,0,50,50);  fill(0,255,0);rect(0,50,50,50);  fill(0,0,255);rect(0,100,50,50);  fill(255,255,0);rect(0,150,50,50);  fill(0,255,255);rect(0,200,50,50);  line(25,250,25,250);  line(25,250,25-7,400);  line(25,250,25+7,400);}void draw(){
}void mousePressed(){  if(mouseX<50){    if(mouseY<50)stroke(255,0,0);    else if(mouseY<100)stroke(0,255,0);    else if(mouseY<150)stroke(0,0,255);    else if(mouseY<200)stroke(255,255,0);    else if(mouseY<250)stroke(0,255,255);    else {      strokeWeight((mouseY-250)/10);    }  }}void mouseDragged(){    if(mouseX>50){    line (mouseX,mouseY,pmouseX,pmouseY);  }}void keyPressed(){  if(key=='1') stroke(255,0,0);  if(keyCode ==UP) line(300,200,300,0);  if(keyCode ==DOWN)line(300,200,300,400);  if(keyCode ==LEFT)line(300,200,0,200);  if(keyCode ==RIGHT)line(300,200,600,200);}