Week 02 林佑安

TODO:製作簡易小畫家

1.用滑鼠一直畫線，不會斷掉


2.滑鼠按下去才會畫線


3.把背景變成白色，並且按數字鍵1.2.3可以換顏色


4.可以用滾輪改粗細


程式碼:

void setup()
{
  size(600,600);
  background(255);
}
void draw()
{
  if(mousePressed) line(mouseX, mouseY, pmouseX, pmouseY);
}
void keyPressed()
{
  if(key=='1') stroke(#FF0015);
  if(key=='2') stroke(#FFD900);
  if(key=='3') stroke(#00FF1B);
  if(key=='4') strokeWeight(30);
  if(key=='5') strokeWeight(40);
}
int now=1;
void mouseWheel(MouseEvent event)
{
  float e = event.getCount();
  //println(e);
  now += e;
  if(now<1) now=1;
  strokeWeight(now);
  println(now);

}

5.按s可以儲存剛剛畫的圖，關掉後再開按r就可以開啟儲存的圖


6.按c可以叫出小畫家的調色盤


7.可以選調色盤的顏色


程式碼:

void setup()
{
  size(600,600);
  background(255);
}
void draw()
{
  if(bColorSelect)
  {
    loadPixels();
    stroke(pixels[mouseX+mouseY*width]);
  }
  else if(mousePressed) line(mouseX, mouseY, pmouseX, pmouseY);
}
boolean bColorSelect=false;
void keyPressed()
{
  if(key=='1') stroke(#FF0015);
  if(key=='2') stroke(#FFD900);
  if(key=='3') stroke(#00FF1B);
  if(key=='4') strokeWeight(30);
  if(key=='5') strokeWeight(40);
  if(key=='s') save("now.png");
  if(key=='r')
  {
    PImage img=loadImage("now.png");
    if(img!=null) image(img, 0,0);
  }
  if(key=='c' && bColorSelect==false)
  {
    bColorSelect=true;
    save("beforeColor.png");
    PImage img=loadImage("colorMap.png");
    image(img, 0,0);
  }
  else if(key=='c' && bColorSelect==true)
  {
    bColorSelect=false;
    PImage img=loadImage("beforeColor.png");
    if(img!=null) image(img, 0,0);
  }
}
int now=1;
void mouseWheel(MouseEvent event)
{
  float e = event.getCount();
  //println(e);
  now += e;
  if(now<1) now=1;
  strokeWeight(now);
  println(now);

}