スナイパースコープ

def setup():
    size(500,500)
    strokeWeight(5)
    
def draw():
    background(0)
    stroke(mouseX/2,mouseY/2,255)
    line(mouseX,0,mouseX,height)
    line(0,mouseY,width,mouseY,)
    noFill()
    
    rect(mouseX-5,mouseY-5,10,10)
    
    stroke(mouseX/2-30,mouseY/2-30,255-30)
    rect(mouseX-15,mouseY-15,30,30)
    
    stroke(mouseX/2-60,mouseY/2-60,255-60)
    rect(mouseX-25,mouseY-25,50,50)
    
    stroke(mouseX/2-90,mouseY/2-90,255-90)
    rect(mouseX-35,mouseY-35,70,70)
    
    stroke(mouseX/2-120,mouseY/2-120,255-120)
    rect(mouseX-45,mouseY-45,90,90)
    
    stroke(mouseX/2-150,mouseY/2-150,255-150)
    rect(mouseX-55,mouseY-55,110,110)
    
    stroke(mouseX/2-180,mouseY/2-180,255-180)
    rect(mouseX-65,mouseY-65,130,130)
    
    stroke(mouseX/2-210,mouseY/2-210,255-210)
    rect(mouseX-75,mouseY-75,150,150)
    
    stroke(mouseX/2-240,mouseY/2-240,255-240)
    rect(mouseX-85,mouseY-85,170,170)