public void build_scene()
{
Figure room = Figure.get_Hexahedron(10);
up_left = room.sides[0].get_point(0);
up_right = room.sides[0].get_point(1);
down_right = room.sides[0].get_point(2);
down_left = room.sides[0].get_point(3);
Point3D normal = Side.norm(room.sides[0]); // нормаль стороны комнаты
Point3D center = (up_left + up_right + down_left + down_right) / 4; // центр стороны комнаты
focus = center + normal * 10;
room.set_pen(new Pen(Color.Gray));
room.sides[0].drawing_pen = new Pen(Color.Green);
room.sides[1].drawing_pen = new Pen(Color.Gold);
room.sides[2].drawing_pen = new Pen(Color.DeepPink);
room.sides[3].drawing_pen = new Pen(Color.BlueViolet);
room.figure_material = new Material(0f, 0, 0.05f, 0.7f);
Light l1 = new Light(new Point3D(0f, 2f, 4.9f), new Point3D(1f, 1f, 1f));
Light l2 = new Light(new Point3D(-4.9f, -4.9f, 4.9f), new Point3D(1f, 1f, 1f));
lights.Add(l1);
lights.Add(l2);
Sphere s1 = new Sphere(new Point3D(-2.5f, 1.7f, -3.7f), 1.4f);
s1.set_pen(new Pen(Color.White));
s1.figure_material = new Material(0.05f, 0.9f, 0f, 0f, 1.05f);
Sphere s2 = new Sphere(new Point3D(-2.5f, -2, 2.5f), 2f);
s2.set_pen(new Pen(Color.White));
s2.figure_material = new Material(0.9f, 0f, 0f, 0.1f, 1f);
Figure cube1 = Figure.get_Hexahedron(2.8f);
cube1.offset(-0.5f, -1, -3.9f);
cube1.rotate_around(55, "CZ");
cube1.set_pen(new Pen(Color.Aqua));
cube1.figure_material = new Material(0f, 0f, 0.1f, 0.7f, 1.5f);
Figure cube2 = Figure.get_Hexahedron(1.5f);
cube2.offset(-0.5f, -0.9f, -1.7f);
cube2.rotate_around(120, "CZ");
cube2.set_pen(new Pen(Color.White));
cube2.figure_material = new Material(0.9f, 0f, 0f, 0.1f, 1.2f);
Figure cube3 = Figure.get_Hexahedron(2f);
cube3.offset(2.7f, 2.5f, -3.95f);
cube3.rotate_around(-10, "CZ");
cube3.set_pen(new Pen(Color.Red));
cube3.figure_material = new Material(0, 0.7f, 0.1f, 0.5f, 1f);
scene.Add(room);
scene.Add(cube1);
scene.Add(cube2);
scene.Add(cube3);
scene.Add(s1);
scene.Add(s2);
}