Week14

void setup(){
   size(500, 500); 
}
int x = -1, y = -1;
void draw(){
  if(x != -1){
     ellipse(x,y, 1, 1);
     y++;
  }
}
void mouseDragged(){
   if(mouseButton==LEFT)line(mouseX, mouseY, pmouseX, pmouseY); 
   if(mouseButton==RIGHT){
     x = mouseX;
     y = mouseY;
   }
}
void setup(){
   size(500, 500); 
   background(255);
}
void draw(){
   //pixels()
}  
void mouseDragged(){
    if(mouseButton==LEFT){
        line(mouseX, mouseY, pmouseX, pmouseY);
        loadPixels();
        for(int i=0; i < width*height; i++){
          if(pixels[i] != -1) pixels[i] = color(random(255), random(255), random(255));
        }
        updatePixels();
    }
}



PImage img;
void setup(){
   size(500, 500);
   img = createImage(500, 500, RGB);
   img.loadPixels();
   for(int i=0; i<500*500; i++)img.pixels[i] = color(#FFFFF2);
   img.updatePixels();
}
int x = 250, y = 0;
void draw(){
  background(img);
  ellipse(x, y, 20, 20);
  if(y<498 && img.pixels[x+y*500]==-14) y++; 
}
void mouseDragged(){
  background(img);
  line(mouseX, mouseY, pmouseX, pmouseY);
  loadPixels();
  img.loadPixels();
  for(int i=0; i<500*500; i++) img.pixels[i] = pixels[i];
  img.updatePixels();
  updatePixels();
}
PImage img;
void setup(){
   size(500, 500);
   img = createImage(500, 500, RGB);
}
//int x = 250, y = 0;
ArrayList<PVector> p = new ArrayList<PVector>();
void draw(){
  background(img);
  for(PVector pp : p){
  ellipse(pp.x, pp.y, 20, 20);
  if(pp.y<498 && img.pixels[int(pp.x)+int(pp.y)*500]==-16777216) pp.y++;
  }
}
void mouseDragged(){
   background(img);
   stroke(random(255), random(255), random(255));
   line(mouseX, mouseY, pmouseX, pmouseY);
   loadPixels();
   img.loadPixels();
   for(int i=0; i<500*500; i++) img.pixels[i] = pixels[i];
   img.updatePixels();
   updatePixels();
   for(PVector pp : p){
     ellipse(pp.x, pp.y, 20, 20);
   }
}
void mousePressed(){
   if(mouseButton==RIGHT){
      p.add(new PVector(mouseX, mouseY)); 
   }
}


PImage img;
void setup(){
   size(500, 500);
   background(#FFFFF2);
}
void draw(){
  if(mousePressed && mouseButton==LEFT) line(mouseX, mouseY, pmouseX, pmouseY);
  if(mousePressed && mouseButton==RIGHT){
     loadPixels();
     color c1 = pixels[mouseX+mouseY*500];
     color c2 = color(random(255), random(255), random(255));
     if(c1!=c2)myFloodFill(mouseX, mouseY, c1, c2);
     updatePixels();
  }
}
boolean isOK(int x, int y, color c1){
  if(x<0 || y<0 || x>=500 || y>=500) return false;
  if(pixels[x + y*500] != c1) return false;
  return true;
}
void myFloodFill(int x, int y, color c1, color c2){
   pixels[x + y *500] = c2;
   if(isOK(x+1, y, c1)) myFloodFill(x+1, y, c1, c2);
   if(isOK(x-1, y, c1)) myFloodFill(x-1, y, c1, c2);
   if(isOK(x, y+1, c1)) myFloodFill(x, y+1, c1, c2);
   if(isOK(x, y-1, c1)) myFloodFill(x, y-1, c1, c2);
}//不要點太大的區域,因為「函式呼叫函式」太多層，會被警告出錯




滑鼠有圖片
void setup(){
   size(500, 500);
   PImage img = loadImage("cute.png");
   cursor(img);
}
void draw(){
  background(#FFFFF2);
}

滑鼠有兩張圖片相互切換
PImage imgCute, imgKitty;
void setup(){
   size(500, 500);
   imgCute = loadImage("cute.png");
   imgKitty = loadImage("kitty.png");
   cursor(imgKitty);
}
void draw(){
   background(#FFFFF2);
   if(frameCount%120==0) cursor(imgCute);
   if(frameCount%120==60) cursor(imgKitty);
}
PImage imgBigCute, imgBigKitty, imgCursor;
void setup(){
   size(500, 500);
   imgBigCute = loadImage("bicute.png");
   imgBigKitty = loadImage("bigKitty.png");
   imgCursor = imgBigKitty;
}
void draw(){
   background(#FFFFF2);
   imageMode(CENTER);
   image(imgCursor, mouseX, mouseY);
   imageMode(CORNER);
   if(frameCount%120==0) imgCursor = imgBigCute;
   if(frameCount%120==60) imgCursor = imgBigKitty;
}