void setup() {
size(400, 400);
noFill();
}
void draw() {
int gap = 30;
int pos = 228;
int maxheight = 303;
int thickness = 1;
int dx = 163;
int dy = 186;
background(0);
stroke(255);
strokeWeight(thickness);
line(pos, gap, pos, maxheight - gap);
arc(pos - dx/2, maxheight - gap, dx, dy, 0, PI);
}