Vektor2D normAnf = new Vektor2D(punkte.get(0));
Vektor2D orthoAnf;
normAnf.sub(punkte.get(1));
normAnf.normal();
orthoAnf = new Vektor2D(normAnf);
orthoAnf.ortho();
Iterator<Vektor2D> it1 = pfeilAnfang.iterator();
Polygon2D zwisch = new Polygon2D(pfeilAnfang.size());
while (it1.hasNext()) {
aktVek = it1.next();