ProjectionPicker 是一个单按钮小部件，用于在透视投影和正交投影之间切换。 The ProjectionPicker is a single button widget for switching between perspective and orthographic projections.
| 名称 Name | 类型 Type | 说明 Description |
|---|---|---|
container |
Element | string | 将包含小部件的 DOM 元素或 ID。 The DOM element or ID that will contain the widget. |
scene |
Scene | 要使用的场景实例。 The Scene instance to use. |
抛出： Throws:
-
DeveloperError ：文档中不存在 ID 为“container”的元素。 : Element with id "container" does not exist in the document.
示例： Example:
// In HTML head, include a link to the ProjectionPicker.css stylesheet,
// and in the body, include: <div id="projectionPickerContainer"></div>
// Note: This code assumes you already have a Scene instance.
const projectionPicker = new Cesium.ProjectionPicker('projectionPickerContainer', scene);成员 Members
获取父容器。 Gets the parent container.
获取视图模型。 Gets the view model.
方法 Methods
销毁小部件。如果从布局中永久删除小部件，则应调用。 Destroys the widget. Should be called if permanently removing the widget from layout.
返回： Returns:
如果对象已被销毁，则为 true，否则为 false。 true if the object has been destroyed, false otherwise.