比奇堡佳齁勝 14

 void setup() {

  size(500, 500);

}

int x=-1, y=-1;

void draw() {

  if (x!=-1) {

    ellipse(x, y, 1, 1);

    y++;//往下滴(x,y)座標中y慢慢變大,就是往下的感覺

  }

}

void mouseDragged() { //按下右鍵，才會滴水滴

  if (mouseButton==LEFT)line(mouseX, mouseY, pmouseX, pmouseY);

  if (mouseButton==RIGHT) {

    x=mouseX;

    y=mouseY;

  }

}

void setup(){

  size(500,500);

  background(255);//背景設成白色

}

void draw(){

  //pixels

}

void mouseDragged(){

  if(mouseButton==LEFT){//左鍵拖曳

    line(mouseX,mouseY,pmouseX,pmouseY);

    loadPixels();//取出畫面的像素

    for(int i=1; i<width*height; i++){//全部的點,都循一下色彩

      if(pixels[i] != -1)pixels[i]=color(random(255),random(255),random(255));

    }//如果不是白色就是有畫圖碰到的pixels,都變成亂數的彩色

  }

}

}

沒加 background(255);//點擊會變彩色

PImage img;

void setup() {

  size(500, 500);

  img = createImage(500, 500, RGB);//用來畫圖的畫布

  img.loadPixels();

  for (int i=0; i<500*500; i++)img.pixels[i] = color(#FFFFF2);//-14

  img.updatePixels();

}

int x=250, y=0;

void draw() {

  background(img);

  ellipse(x, y, 20, 20);

  if (img.pixels[x+y*250]==-14)y++;

}

void mouseDragged() {

background(img);

  line(mouseX, mouseY, pmouseX, pmouseY);

  loadPixels();//取出畫面的像素

  img.loadPixels();

  for (int i=0; i<500*500; i++) img.pixels[i]=pixels[i];//把畫面色彩,搬到img裡

  img.updatePixels();

  updatePixels();

}

PImage img;

void setup() {

  size(500, 500);

  img = createImage(500, 500, RGB);//用來畫圖的畫布

}//換黑背景,可以用mouse刮出彩色的線條

//int x=250, y=0;

ArrayList<PVector> p = new ArrayList<PVector>();//很多個點p

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++;

  }

  //if (y<498 && img.pixels[x+y*250]==-16777216)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];//把畫面色彩,搬到img裡

  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));

  }

}

void setup() {

  size(500, 500);

  background(#FFFFF2);

}

void draw() {

  if (mousePressed && mouseButton==LEFT) line(mouseX, mouseY, pmouseX, pmouseY);

  if (mousePressed && mouseButton==RIGHT) {

    loadPixels();//把畫面,讀入pixels[]陣列裡

    color c1 = pixels[mouseX+mouseY*500];//原本的色彩

    color c2 = color(random(255), random(255), random(255));//亂數色彩

    if (c1!=c2)myFloodFill(mouseX, mouseY, c1, c2);

    updatePixels();//把陣列的數值,放回畫面

  }

}

boolean isOk(int x, int y, color c1) {

  if (x<0 || y<0 || x>=500 || y>=500)return false;//超過邊界,不能做

  if (pixels[x+y*500]!=c1)return false;//色彩原本的c1色彩不同,就不要變色

  return true;

}

void myFloodFill(int x,int y, color c1, color c2) {

  pixels[x+y*500]=c2;//這一格,設成新色彩

  if (isOK(x+1, y, c1))myFloodFill(x+1, y, c1, c2);//試右邊,色彩對嗎

  if (isOK(x-1, y, c1))myFloodFill(x-1, y, c1, c2);//試左邊,色彩對嗎

  if (isOK(x, y+1, c1))myFloodFill(x, y+1, c1, c2);

  if (isOK(x, y-1, c1))myFloodFill(x, y-1, c1, c2);

}//不要點太大區域,因為函式呼叫函式太多層,會被警告出錯

void setup(){

  size(500,500);

  PImage img = loadImage("234.png");

  cursor(img);

}

void draw(){

  background(#FFFFF2);

}

截圖看不到鼠標--><--

PImage img234,img123;

void setup(){

  size(500,500);

  

  img234 = loadImage("234.png");

  img123 = loadImage("123.png");

  cursor(img123);

}

void draw(){

  background(#FFFFF2);

  if(frameCount%120==0)cursor(img123);

  if(frameCount%120==60)cursor(img234);

}

PImage img234,img123;

void setup(){

  size(500,500);

  

  img234 = loadImage("234.png");

  img123 = loadImage("123.png");

  img123 = img234;

}

void draw(){

  background(#FFFFF2);

  imageMode(CENTER);

  image(img123,mouseX,mouseY);

  imageMode(CENTER);

  if(frameCount%120==0)cursor(img123);

  if(frameCount%120==60)cursor(img234);

}