# abstract new ZoomNavigationControl(terria, zoomIn)
参数:
| 名称 | 类型 | 描述 |
|---|---|---|
terria |
Object | The Terria instance. |
zoomIn |
boolean | is used for zooming in (true) or out (false) |
成员变量
方法
# abstract protected activate()
When implemented in a derived class, performs an action when the user clicks on this control
