Sphere SOP

Summary

The Sphere SOP generates spherical objects of different geometry types. It is capable of creating non-uniform scalable spheres of all geometry types.

If an input is provided, the sphere's radius is automatically determined as a function of the input's bounding geometry.

sphereSOP_Class

Parameters - Page

Primitive Type type - ⊞ - Select from the following types. For information on the different types, see the Geometry category articles. Depending on the primitive type chosen, some SOP options may not apply.

• Primitive prim -

• Polygon poly -

• Mesh mesh -

• NURBS nurbs -

• Bezier bezier -

Connectivity surftype - ⊞ - This option is used to select the type of surface, when using a Mesh Primitive Type.

• Rows rows - Creates horizontal lines.

• Columns cols - Creates vertical lines.

• Rows and Columns rowcol - Both Rows and Columns. Looks like Quads in wire frame display, but all polygons are open (if the primitive type is polygon).

• Triangles triangles - Build the grid with Triangles.

• Quadrilaterals quads - Generates sides composed of quadrilaterals (default).

• Alternating Triangles alttriangles - Generates triangles that are opposed; similar to the Triangles option.

Orient Bounds orientbounds - Available only when an input is connected to the Sphere SOP to set bounds for the sphere. When Orient Bounds = On it will rotate the geometry to match the orientation of the input SOP used for bounds.

Modify Bounds modifybounds - Available only when an input is connected to the Sphere SOP to set bounds for the sphere. When Modify Bounds = On the transform parameters below will further modify the rotation, position, and radius of the bounds.

Radius rad - ⊞ - The radius of the sphere in X, Y and Z.

• X radx -

• Y rady -

• Z radz -

Center t - ⊞ - Offset of sphere center from object center.

• X tx -

• Y ty -

• Z tz -

Orientation orient - ⊞ - Determines axis for sphere. Poles of sphere align with orientation axis.

• X Axis x -

• Y Axis y -

• Z Axis z -

Frequency freq - This controls the level of polygons used to create the sphere, when using the Polygon Primitive Type.

Rows rows - Number of rows in a sphere when using the mesh, imperfect NURBS and imperfect Bzier.

Columns cols - Number of columns in a sphere when using the mesh, imperfect NURBS and imperfect Bzier.

U Order orderu - If a spline curve is selected, it is built at this order for U.

V Order orderv - If a spline curve is selected, it is built at this order for V.

Imperfect imperfect - This option applies only to Bzier and NURBS spheres. If selected, the spheres are approximated nonrational curves, otherwise they are perfect rational curves.

Unique Points per Pole upole - Applies to Mesh, NURBS and Bzier surfaces only. This option determines whether points at the poles are shared or are individual to the columns.

Accurate Bounds accurate - If the SOP is being used to generate a bounding sphere for it's input geometry, this parameter tells the SOP to use a more accurate (but slower) bounding sphere calculation.

Texture Coordinates texture - ⊞ - Adds UV texture coordinates to the sphere.

• Off off - No UV coordinates added to surface.

• By Primitive Type byprimtype - Adds vertex UV coordinates.

• Equirectangular Inside (Spherical Polar) equirectangularin -

• Equirectangular Outside (Spherical Polar) equirectangularout -

• Equidistant Azimuth (Fish Eye 180) equiazimuth -

• Equidistant Azimuth (Fish Eye 360) equiazimuth360 -

Compute Normals normals - Creates normals on the geometry.

Operator Inputs

• Input 0 -

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