Yang_week02

Color:

背景顏色:

background(R,G,B);

background(H,S,B);

線框:

stroke(顏色);

填色:

fill(R,G,B);

fill(H,S,B);

Practice1:

void setup(){

  size(500,500);

}

void draw(){

   if(mousePressed) background(255,255,0);

   else background(0,255,0);

}  

❗滑鼠點擊切換顏色

Practice2:

void setup(){

  size(500,500);

}

void draw(){

   if(mousePressed) 

   line(mouseX,mouseY,pmouseX,pmouseY);///前面為新座標、

}                                                                              後面為舊座標

🔔自製小畫家可以任意畫圖寫字

Practice3:

void setup(){

  size(500,500);

}

void draw(){

    fill(#ff0000);rect(0,0,100,100);      ///色塊

    fill(#ffff00);rect(0,100,100,100);

    fill(#00ff00);rect(0,200,100,100);

    fill(#0000ff);rect(0,300,100,100);

    fill(#ff00ff);rect(0,400,100,100);  

   if(mousePressed && mouseX<100){     ///判斷滑鼠點擊色塊位置

     if(mouseY<100)stroke(#ff0000);

     else if(mouseY<200)stroke(#ffff00);

     else if(mouseY<300)stroke(#00ff00);

     else if(mouseY<400)stroke(#0000ff);

     else if(mouseY<500)stroke(#ff00ff);

   }

   else if(mousePressed&& mouseX>100){     ///畫圖區塊

      line(mouseX,mouseY,pmouseX,pmouseY); 

   }

}  

Practice4:

void setup(){

  size(500,500);

  fill(#ff0000);rect(0,0,100,100);

  fill(#ffff00);rect(0,100,100,100);

  fill(#00ff00);rect(0,200,100,100);

  fill(#0000ff);rect(0,300,100,100);

  fill(#ff00ff);rect(0,400,100,100);

  strokeWeight(5);

}

void keyPressed(){   ///存檔

   save("yes.png") ;

}  

void draw(){

    

   if(mousePressed && mouseX<100){ 

     if(mouseY<100)stroke(#ff0000);

     else if(mouseY<200)stroke(#ffff00);

     else if(mouseY<300)stroke(#00ff00);

     else if(mouseY<400)stroke(#0000ff);

     else if(mouseY<500)stroke(#ff00ff);

   }

   else if(mousePressed&& mouseX>100){

      line(mouseX,mouseY,pmouseX,pmouseY); 

   }

}