Constructor
new ZoomNavigation(viewer, zoomIn)
放大缩小构造类
Parameters:
| Name | Type | Description |
|---|---|---|
viewer |
Viewer | |
zoomIn |
Boolean | true or false |
Classes
Methods
(abstract, protected) activate()
When implemented in a derived class, performs an action when the user clicks
on this control
zoom(relativeAmount)
放大缩小实现类
Parameters:
| Name | Type | Description |
|---|---|---|
relativeAmount |
Number | 缩放比例 |
Returns:
none