Diagonal line loop

[humano]

But, if you don´t want vertical lines, if you want them diagonal, is this the way?Why do I see them fragmented?

void setup() {
	size(1000,1000);
	background(255,255,255);
}
void draw() {
	for (int i=0; i<1000; i=i+20) {
  line(i,0,i+40,1000);
}
}