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void setup()
{
size(500,500);
background(0);
}
void draw()
{
stroke(255);
/*line(0,25,500,25);
line(0,50,500,50);
line(0,75,500,75);/*
/*float winkel = map(mouseX,0,500,0,2+PI);
{
//rotate(winkel);
println(mouseX);
println(winkel);
line(0,100,500,100);
}*/
if(mouseY>225) {
if(mouseY<275) {
background (0);
stroke(255,0,0);
line(250,250,500-mouseX,500-mouseY);
line(250,250,mouseX,mouseY);
}
}
line(0,25,500,25);
line(0,50,500,50);
line(0,75,500,75);
line(0,100,500,100);
line(0,125,500,125);
line(0,150,500,150);
line(0,175,500,175);
line(0,200,500,200);
line(0,225,500,225);
line(0,275,500,275);
line(0,300,500,300);
line(0,325,500,325);
line(0,350,500,350);
line(0,375,500,375);
line(0,400,500,400);
line(0,425,500,425);
line(0,450,500,450);
line(0,475,500,475);
line(0,500,500,500);
}