Sphere SOP

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Summary
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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.

PythonIcon.pngsphereSOP_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.

Modify Bounds modifybounds -

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 -


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An Operator Family that reads, creates and modifies 3D polygons, curves, NURBS surfaces, spheres, meatballs and other 3D surface data.

A surface type in SOPs including polygon, curve (NURBS and Bezier), patch (NURBS and Bezier) and other shapes like sphere, tube, and metaball. Points and Primitives are part of the Geometry Detail, which is a part of a SOP.