how to draw 3d primitif object

Box

2. Type AI_BOX at the command prompt.

Command: ai_box

Initializing... 3D Objects loaded. Corner of box: pick point

Specify length of box: 4

Specify width of box or [Cube]: 2

Specify height of box: 2

Specify rotation angle of box about the Z axis or [Reference]: 0

Pyramid

1. Type AI_PYRAMID at the command prompt.

Command: ai_pyramid

Specify first corner point for base of pyramid: pick point

Specify second corner point for base of pyramid:

4

Specify third corner point for base of pyramid: 4

Specify fourth corner point for base of pyramid or

[Tetrahedron]: 4

Specify apex point of tetrahedron or [Top]: .xy

of pick

(need Z): 4

Wedge

1. Type AI_WEDGE at the command prompt.

Command: ai_wedge

Specify corner point of wedge: pick point

Specify length of wedge: 4

Specify width of wedge: 2

Specify height of wedge: 2

Specify rotation angle of wedge about the Z axis: 0

Dome

1. Type AI_DOME at the command prompt.

Command: ai_dome

Specify center point of dome: pick point

Specify radius of dome or [Diameter]: 3

Enter number of longitudinal segments for surface of dome <16>:

20

Enter number of latitudinal segments for surface of dome

<8>: 10

Sphere

1. Type AI_SPHERE at the command prompt.

Command: ai_sphere

Specify center point of sphere: pick point

Specify radius of sphere or [Diameter]: 3

Enter number of longitudinal segments for surface of sphere <16>:

25

Enter number of latitudinal segments for surface of sphere <16>: 25

Cone

1. Type AI_CONE at the command prompt.

Command: ai_cone

Specify center point for base of cone: pick point

Specify radius for base of cone or [Diameter]: 2

Specify radius for top of cone or [Diameter] <0>: 5

Specify height of cone: 3

Enter number of segments for surface of cone <16>:

enter

Torus

1. Type AI_TORUS at the command prompt.

Command: ai_torus

Specify center point of torus: pick point

Specify radius of torus or [Diameter]: 6

Specify radius of tube or [Diameter]: 1

Enter number of segments around tube circumference

<16>: enter

Enter number of segments around torus circumference

<16>: enter

Dish

1. Type AI_DISH at the command prompt.

Command: ai_dish

Specify center point of dish: pick point

Specify radius of dish or [Diameter]: 3

Enter number of longitudinal segments for surface of dish

<16>: 20

Enter number of latitudinal segments for surface of dish

<8>: 15

Mesh

1. Type ai_mesh at the command prompt.

Command: ai_mesh

Initializing... 3D Objects loaded. Specify first corner point of mesh:

1,1,1

Specify second corner point of mesh: 4,1,1

Specify third corner point of mesh: 4,4,2

Specify fourth corner point of mesh: 1,4,1

Enter mesh size in the M direction: 20

Enter mesh size in the N direction: 10