Vec2 p3 = new Vec2(4.3f * s, -1.9f);
Vec2 p4 = new Vec2(3.1f * s, 0.8f);
Vec2 p5 = new Vec2(6.0f * s, 1.5f);
Vec2 p6 = new Vec2(2.5f * s, 3.7f);
FixtureDef fd1 = new FixtureDef();
FixtureDef fd2 = new FixtureDef();
fd1.filter.groupIndex = -1;
fd2.filter.groupIndex = -1;
fd1.density = 1.0f;
fd2.density = 1.0f;