week02 06160832

今天教一個類似打洞機的程式

void setup(){

  size(800,300);

  for(int x=0;x<800;x+=16){

    for(int y=0;y<300;y+=30){

      rect(x,y,16,30);

    }

  }

}

void draw(){

  int nowX=mouseX/16*16, nowY=mouseY/30*30;

  fill(0);

  rect(nowX,nowY,16,30);

}

PImage img;

void setup(){

  size(500,500);

  img=loadImage("https://images.chinatimes.com/newsphoto/2017-12-01/900/A17A00_P_01_01.jpg");

    }

void draw(){

  image(img,mouseX,mouseY,200,200);

}

PImage img;

void setup(){

  size(800,300);

  img=loadImage("https://images.chinatimes.com/newsphoto/2017-12-01/900/A17A00_P_01_01.jpg");

  for(int x=0;x<800;x+=16){

    for(int y=0;y<300;y+=30){

      image(img,mouseX,mouseY,16,30);

    }

  }

}

void draw(){

  int nowX=mouseX/16*16, nowY=mouseY/30*30;

  if(mousePressed && mouseButton==LEFT){

  fill(0);

  image(img,nowX,nowY,16,30);

  }

  else if(mousePressed && mouseButton==RIGHT){

  fill(255);

  image(img,nowX,nowY,16,30);

  }

}

最後做出類似打洞機又可以還原圖片的程式

PImage img;

int [][] table = new int [45][10];

void setup(){

  size(711,377);

  img=loadImage("123.jpg");

}

void draw(){

  background(img);

  int nowI=mouseX/16, nowJ=mouseY/30;

  if(mousePressed && mouseButton==LEFT){

  table[nowI][nowJ]=1;

  }

  else if(mousePressed && mouseButton==RIGHT){

  table[nowI][nowJ]=0;

  }

  for(int i=0;i<45;i++){

    for(int j=0;j<10;j++){

      fill(0);

      if( table[i][j]==1)rect(i*16,j*30,16,30);

    }

}

}