互動技術 week11 課堂筆記

 void setup()

{

  size(500,500);

}

float x=250, y=250;

float vx=2.0, vy=-2.5;

float boardX, boardY=470, boardW=500, boardH=20;

void draw()

{

  boardX = mouseX-boardW/2;

  background(#FFFFF2);

  ///int boardX = mouseX;

  rect(boardX, boardY, boardW, boardH);

  ellipse(x, y, 10, 10);

  x = x+vx;

  y = y+vy;

  if(x>500 || x<0) vx=-vx;

  if(y<0) vy=-vy;

  ///if(y>470 && x>boardX && x<boardX+100) vy=-vy;

  if((y>boardY && y<boardY+boardH) && (x>boardX && x<boardX+boardW))

  {

    vy=-vy;

    vx+=(mouseX-pmouseX)/2;

  }

  if(mousePressed && mouseButton == LEFT)  boardW *=1.01;

  if(mousePressed && mouseButton == RIGHT) boardW *=0.99;

}