float angle = 0.0;
int n = 10;
int n1 = 4;
int rds = 150;
void setup()
{
size(500,500);
}

void draw()
{
angle += n1*TWO_PI/n;
int x1 = round(250 + rds*cos(angle));
int y1 = round(250 + rds*sin(angle));
angle += n1*TWO_PI/n;
int x2 = round(250 + rds*cos(angle));
int y2 = round(250 + rds*sin(angle));
line(x1,y1,x2,y2);
ellipse(round(250 + (rds+10)*cos(angle)),round(250 + (rds+10)*sin(angle)),10,10);
if (angle > 30) angle = 0;
}