| Interface | Description | 
|---|---|
| Combinable | 
 Interface for shapes that can be combined into a complex set of contours by using boolean operations. 
 | 
| Class | Description | 
|---|---|
| CombineContext | 
 CombineContext provides a suitcase of state used by Combinable shapes to generate a complex set of contours by
 applying boolean operations to one or more shapes. 
 | 
| CombineContext.TessCallbackAdapter | 
 Implementation of GLUtessellatorCallback that forwards GLU tessellator callbacks to protected methods on
 CombineContext. 
 | 
| ShapeCombiner |