Class CM3ItemRing extends CM3Item
  CM3ItemRing Class
 
  
  Copyright (C) 2020, Humboldt State University, Jim Graham 
  
  This program is free software: you can redistribute it and/or modify it under the terms of the GNU General 
  Public License as published by the Free Software  Foundation, either version 3 of the License, or (at your 
  option) any later  version. 
   
  This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the 
  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 
  for more details. 
  
  You should have received a copy of the GNU General Public License along with this program. If not, see 
  
Settings Group: Dimensions
| Setting | Name | Type | Options | Default | Comments | 
|---|---|---|---|---|---|
| innerRadius | Inner Radius | CMTYPE_FLOAT | 10 | sphere radius. Default is 1. | |
| outerRadius | Outer Radius | CMTYPE_FLOAT | 20 | sphere radius. Default is 1. | |
| thetaSegments | Number of Segments | CMTYPE_INTEGER | 16,Range:[3,Infinity] | Number of segments. A higher number means the ring will be more round. Minimum is 3. Default is 8. | |
| phiSegments | phiSegments | CMTYPE_INTEGER | 1,Range:[1,Infinity] | ||
| thetaStart | Start Angle | CMTYPE_FLOAT | 0,Range:[0,Math.PI*2] | ||
| thetaLength | Central Angle | CMTYPE_FLOAT | Math.PI*2,Range:[0,Math.PI*2] |