Sphere

geometry={
  kind='sphere', 
    object={
      origin={0.0,0.0,0.0},
      radius=0.25,
      only_surface = true, -- If not defined default is set to false
    }
}

geometry={
  kind='sphere', 
    object={
      {
      origin={0.0,0.0,0.0},
      radius=0.25
      },
      {
      origin={-2.0,0.0,0.0},
      radius=0.25
      }
    }
} 

-- This is the standard seeder configuration, that should document the possible
-- and required configuration options.
-- It should always run out of the box!
-- ------------------------------------------------------------------------- --

-- Location to write the mesh in.
-- Note the trailing path seperator, needed, if all mesh files should be in a
-- directory. This directory has to exist before running Seeder in this case!
folder = 'mesh/'

-- Some comment,you might want to put into the mesh file for later reference.
comment = 'Simple Sample Seeder Mesh'

-- Debug output can be used to output preliminary tree in restart format
-- and this restart file can be converted to vtu format by Harvester
debug = { debugMode = true, debugFiles = false, debugMesh = 'debug/' }

-- Bounding cube: the root node of the octree, defining the complete universe,
-- from which all elements are derived by recursive bisection.
-- The origin is the corner from which on the cube is spanned with the given
-- length in each direction.
bounding_cube = { origin = {-1.0, -1.0, -1.0},
                  length = 2.0 }

-- A minimum level, by which all parts in the computational domain should at
-- least be resolved with. Default is 0.
minlevel = 5

-- *********************** Table of spatial objects *********************** --
-- Each spatial object is defined by an attribute and some geometric entity
-- attached to this attribute. Attributes might be defined multiple times.
-- Attributes are described by a kind (boundary, seed or refinement), a level
-- and maybe further kind specific values, like a label for the boundary.
-- Geometric objects might by right now:
-- - canoND (point, line, plane or box)
-- - STL
-- - Sphere
-- - Cylinder
--
-- Periodic boundaries are special, spatial objects of this kind can only make
-- use of geometric objects of the kind 'periodic'.
spatial_object = {
  {
    -- Defining a domain boundary
    attribute = { kind = 'boundary', -- or seed, refinement
                  label = 'solid',   -- some label to identify the boundary
                                     -- condition
                  level = 1          -- level to refine this object with,
                                     -- default = 0
                },
   -- Defining Geometry of the sphere
    geometry = {
      kind = 'sphere',
      object = {
        {
        radius = 0.2,
        origin = {0.0,0.0,0.0}, -- origin of the sphere
        only_surface = true       -- Use only surface of the object?
                                             -- default is: false.
        }
--       ,{
--        radius = 0.1,
--        origin = {-1.0,0.0,0.0}
--        }  
              }  
              }  
  },
  {
    -- Defining a seed to identify the part of the computational domain in
    -- the universe cube.
    attribute = { kind = 'seed' },
    geometry = { -- single point definition with a canoND object.
                 kind = 'canoND',
                 object = { origin = {-0.0, -1.0, -1.0} } -- origin of the cube for the defining the 'seed'
               }
  }
}
-- ------------------------------------------------------------------------ --