Week05 享翊的上課筆記

Xeyes 跟著滑鼠轉動眼珠
void setup()
{
  size(800,800);
}
void draw()
  {
   background(128);
   strokeWeight(20);
   ellipse(100,200,180,360);
   ellipse(300,200,180,360);
 
   float angle1=atan2((mouseY-200)/2,mouseX-300);
   float newX1=300+100*cos(angle1)/2;
   float newY1=200+200*sin(angle1)/2;
   ellipse(newX1,newY1,10,10);
   float angle2=atan2((mouseY-200)/2,mouseX-100);
   float newX2=100+ 100*cos(angle2)/2;
   float newY2=200+ 200*sin(angle2)/2;
   ellipse(newX2,newY2,10,10);
 
  }



砲塔打泡泡

void setup()
{
  size(400,800);
}
float ballX=200,ballY=600;
float ballVX=0,ballVY=0;
float angle=0;
void draw()
{
  background(100,120,100);
  ellipse(200,600,100,100);fill(#FA9703);
  line(mouseX,mouseY,200,600);
  fill(#F9FA03); ellipse(ballX,ballY,30,30);
  angle=atan2(mouseY-600,mouseX-200);

  ballX+=ballVX;
  ballY+=ballVY; 
}
void mouseMoved()
{
  ballX=200+50*cos(angle);
  ballY=600+50*sin(angle);
}
void mousePressed()
{
  ballVX=cos(angle);
  ballVY=sin(angle);
}


利用陣列排列 10個陣列
void setup()
{
  size(400,800);
}
float [] ballX=new float [10];
float [] ballY=new float [10];
float [] ballVX=new float [10];
float [] ballVY=new float [10];

float []angle=new float[10];
int now=0;

void draw()
{
  background(100,120,100);
  ellipse(200,600,100,100);fill(#FA9703);
  for(int i=0;i<10;i++)
  {
    fill(#F9FA03); ellipse(ballX[i],ballY[i],30,30);
    ballX[i]+=ballVX[i];
    ballY[i]+=ballVY[i];
  }
  angle[now] =atan2(mouseY-600,mouseX-200);

}
void mouseMoved()
{
  ballX[now]=200+50*cos(angle[now]);
  ballY[now]=600+50*sin(angle[now]);
}
void mousePressed()
{
  ballVX[now]=cos(angle[now]);
  ballVY[now]=sin(angle[now]);
  now++;

}