# Spheres Panel

Use the Spheres panel to create a spherical surface and/or mesh.

Location: 2D page

## Full Sphere Subpanel

Option Action
center Select a point for the center of the sphere.
meshing options
mesh, keep surf
Create a surface from the selected entities and generate a mesh on the created surface.
The created surface is retained along with the mesh.
mesh, dele surf
Create a surface from the selected entities and generate a mesh on the created surface.
The created surface is deleted and only the corresponding mesh is retained.
mesh w/o surf
Create a mesh between the selected entities using linear interpolation without creating a surface.
surface only
Create a surface from selected entities, but do not generate a mesh.
Use the resulting surface to perform any desired geometry cleanup functions or automeshing.
radius Specify the value for the radius of the sphere.

## Four Points Subpanel

Option Action
node list Select a point for the center of the sphere.
meshing options
mesh, keep surf
Create a surface from the selected entities and generate a mesh on the created surface.
The created surface is retained along with the mesh.
mesh, dele surf
Create a surface from the selected entities and generate a mesh on the created surface.
The created surface is deleted and only the corresponding mesh is retained.
mesh w/o surf
Create a mesh between the selected entities using linear interpolation without creating a surface.
surface only
Create a surface from selected entities, but do not generate a mesh.
Use the resulting surface to perform any desired geometry cleanup functions or automeshing.

## User Controlled Subpanel

Option Action
center Select a point for the center of the sphere.
r Select the nodes that represent the point.
angle Select the nodes that represent the point.
angle type Select the type of angle used to determine how the angle node orients the sphere.
theta
Zero degrees for theta starts on the vector created by center to angle and theta spins in the plane created by center, r, and angle. Theta follows the right-hand rule, and starts at the normal of the plane created by the three selected nodes.
Phi
Follows the right-hand rule. Phi follows the vector created by center to r and spins in the plane created by center, r, and angle.
meshing options
mesh, keep surf
Create a surface from the selected entities and generate a mesh on the created surface.
The created surface is retained along with the mesh.
mesh, dele surf
Create a surface from the selected entities and generate a mesh on the created surface.
The created surface is deleted and only the corresponding mesh is retained.
mesh w/o surf
Create a mesh between the selected entities using linear interpolation without creating a surface.
surface only
Create a surface from selected entities, but do not generate a mesh.
Use the resulting surface to perform any desired geometry cleanup functions or automeshing.

## Command Buttons

Option Action
create Create the sphere.
reject Revert the most recent changes.
return Exit the panel.

## Create a Full Spherical Surface

 Figure 1. Center Selected Figure 2. Sphere Created

## Create a Sphere Using the Four Points Option

 Figure 3. Center Selected Figure 4. Sphere Created

## Create a Sphere using the User-Controlled Option

 Figure 5. Points Selected Figure 6. Sphere Created