week04 讀入圖片

讀入單一圖片 

PImage img;

size(184,184);

img = loadImage("kekw.jpg");

image( img,0,0);

讀入雙圖

PImage img;

PImage img2;

void setup(){

size(800,498);

img = loadImage("kekw.jpg");

img2 = loadImage("pog.jpg");

}

int x=0;

void draw(){

  

image( img,0,0);

image( img2,mouseX-54/2,mouseY-49/2);

}

符合物理運動的球

float x=250,y=200;

float vx=10.0,vy=10.0; //speed

void setup(){

   size(500,400); 

}

void draw(){

   ellipse(x,y,10,10);

   x+=vx;

   y+=vy;

  if(x>500||x<0) vx=-vx;

  if(y>400||y<0) vy=-vy;

}

符合牛頓第二物理運動的球

float x=250,y=200;

float vx=20.0,vy=20.0;

void setup(){

   size(1600,1200); 

}

void draw(){

  background(255);

  if(mousePressed) line(mouseX,mouseY,x,y);

  

   ellipse(x,y,10,10);

   ellipse(mouseX,mouseY,10,10);

   x+=vx;

   y+=vy;

  if(x>1600||x<0) vx=-vx;

  if(y>1200||y<0) vy=-vy;

}

void mouseReleased(){

    vx=x-mouseX;vy=y-mouseY;

}