裁剪基类
    
    
    
    
    
    
        
| Name | Type | Description | 
|---|---|---|
| ys | Object | youScene对象 | 
| i3d | Model | LodScene | Model|LodScene对象 | 
- Implements:
See:
Methods
- 
    
    裁剪
- 
    
    还原
