Creating Spheres

The Sphere tool creates spheres using one of three modes.

The sphere radius can be changed with the Reshape tool (see Reshaping Extruded Objects and Solid Primitives), the radius can be modified in the Object Info palette, and the resolution can be adjusted through the 3D Conversion Resolution setting (see 3D Preferences).

Sphere by Radius

To create a sphere by radius:

1. Click the Sphere tool from the 3D Modeling tool set, and select the Radius mode.

2. Click to set the center of sphere base.

3. Move the mouse to the desired radius and click to set the radius of the sphere base. The radius can also be set in the Data bar.

Sphere by Diameter

To create a sphere by diameter:

1. Click the Sphere tool from the 3D Modeling tool set, and select the Diameter mode.

2. Click to set the first point on the sphere base diameter.

3. Move the mouse to the desired diameter and click to set the diameter of the sphere base.

Sphere by Center and Radius

To create a sphere by center and radius:

1. Click the Sphere tool from the 3D Modeling tool set, and select the Center and Radius mode.

2. Click to set the center of the sphere base on the working plane.

3. Move the mouse and click to set the height of the sphere above the working plane.

4. Move the mouse to the desired radius and click to set the radius of the sphere base. The radius can also be set in the Data bar.

The center and height, relative to the working plane, of the sphere is automatically established if the first click is on a snap point—for example a 3D locus or vertex on another 3D object.

When in a non-isometric view, the sphere is created centered on the working plane.

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