Subject: Creating spheres

You can create spheres. The latitude lines of a sphere are always parallel with the xy plane of the current UCS; the central axis is always parallel with the z-axis. You posi­tion a sphere by specifying its center point. You determine the size of a sphere by specifying either its radius or its diameter.

To create a sphere as an ACIS solid

   1   Do one of the following to choose Sphere ():

   On the ribbon, choose Draw 3D > Sphere (in Draw 3D Solids).

   On the menu, choose Draw > 3D Solids > Sphere.  

   On the Draw 3D Solids toolbar, click the Sphere tool.

   Type sphere and then press Enter.

   2   Specify the center of the sphere.

   3   Specify the radius or diameter.

To create a sphere as a Facet Model mesh

   1   Do one of the following to choose Sphere ():

   On the ribbon, choose Draw 3D > Sphere (in Facet Model Meshes).

   On the menu, choose Draw > Facet Model > Sphere.  

   On the Facet Model Meshes toolbar, click the Sphere tool.

   Type fmsphere and then press Enter.

   2   Specify the center of the sphere.

   3   Specify the radius or diameter.

To create a sphere as a 3D mesh

   1   Do one of the following to choose Sphere ():

   On the ribbon, choose Draw 3D > Sphere (in Draw 3D Meshes).

   On the menu, choose Draw > 3D Meshes > Sphere.  

   On the Draw 3D Meshes toolbar, click the Sphere tool.

   Type ai_sphere and then press Enter.

   2   Specify the center of the sphere.

   3   Specify the radius or diameter.

   4   Specify the number of longitudinal sections that are perpendicular to the xy plane.

   5   Specify the number of latitudinal sections that are parallel to the xy plane.

 

Center (A) and radius (B) of the sphere.

 

The resulting sphere.

Creating_spheres
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