void DrawBillardtisch(){
	double x=7;
	double z=5;
	double h=2;
	double rb=1;
	Vec3 hoehe(0,h,0);
	Vec3 P1(-x,0,z);
	Vec3 P2(x,0,z);
	Vec3 P3(x,0,-z);
	Vec3 P4(-x,0,-z);

	//Boden
	SetMaterialColor(3, 0, 0.5, 0);
	DrawQuad(P1,P2,P3,P4);
	//seiten
	SetMaterialColor(3, 0, 0.6, 0);
	DrawQuad(P1+e2*h,P2+e2*h,P2,P1);
	DrawQuad(P2+e2*h,P3+e2*h,P3,P2);
	DrawQuad(P3+e2*h,P4+e2*h,P4,P3);
	DrawQuad(P4+e2*h,P1+e2*h,P1,P4);
	//rahmen
	SetMaterialColor(3, 0.6, 0.6, 0);
	DrawQuad(P1+e2*h-e1*rb+e3*rb,  P2+e2*h+e1*rb+e3*rb,  P2+e2*h,  P1+e2*h);
	DrawQuad(P2+e2*h+e1*rb+e3*rb,  P3+e2*h+e1*rb-e3*rb,  P3+e2*h,  P2+e2*h);
	DrawQuad(P3+e2*h+e1*rb-e3*rb,  P4+e2*h-e1*rb-e3*rb,  P4+e2*h,  P3+e2*h);
	DrawQuad(P4+e2*h-e1*rb-e3*rb,  P1+e2*h-e1*rb+e3*rb,  P1+e2*h,  P4+e2*h);

	DrawQuad(P2+e2*h+e1*rb+e3*rb,  P1+e2*h-e1*rb+e3*rb,  P1-e1*rb+e3*rb,  P2+e1*rb+e3*rb);
	DrawQuad(P3+e2*h+e1*rb-e3*rb,  P2+e2*h+e1*rb+e3*rb,  P2+e1*rb+e3*rb,  P3+e1*rb-e3*rb);
	DrawQuad(P4+e2*h-e1*rb-e3*rb,  P3+e2*h+e1*rb-e3*rb,  P3+e1*rb-e3*rb,  P4-e1*rb-e3*rb);
	DrawQuad(P1+e2*h-e1*rb+e3*rb,  P4+e2*h-e1*rb-e3*rb,  P4-e1*rb-e3*rb,  P1-e1*rb+e3*rb);

	DrawQuad(P1-e1*rb+e3*rb,  P2+e1*rb+e3*rb,  P2,  P1);
	DrawQuad(P2+e1*rb+e3*rb,  P3+e1*rb-e3*rb,  P3,  P2);
	DrawQuad(P3+e1*rb-e3*rb,  P4-e1*rb-e3*rb,  P4,  P3);
	DrawQuad(P4-e1*rb-e3*rb,  P1-e1*rb+e3*rb,  P1,  P4);



}