Creates a new instance of
ScreenSpaceZoomCameraController.
| Name | Type | Description |
|---|---|---|
options |
ScreenSpaceZoomCameraController.ControllerOptions | optional The options for configuring the controller. |
Example:
TODOMembers
Determines if the controller is enabled and should be updated by the host scene.
The rate at which the camera's zoom velocity decays over time.
-
Default Value:
6.0
The ratio of the camera's distance to the zoom target that defines how much the camera zooms in and out per second.
-
Default Value:
0.06
The rate at which the camera zooms in and out based on the mouse wheel delta.
-
Default Value:
0.1
Methods
Invoked when the controller is added to the DOM. Implement
connectedCallback to set up any DOM event listeners.
| Name | Type | Description |
|---|---|---|
element |
HTMLElement | The DOM element containing the Cesium scene. |
Invoked when the controller is removed from the DOM. Implement
disconnectedCallback to tear down any DOM event listeners.
| Name | Type | Description |
|---|---|---|
element |
HTMLElement | The DOM element containing the Cesium scene. |
Invoked when the controller is being updated the first time, immediately before
update is called. Implement firstUpdate to perform one-time work after the relevant scene has begun its render loop. Some examples might include initializing simulation time values or adding a primitive to the scene.
| Name | Type | Description |
|---|---|---|
scene |
Scene | |
time |
JulianDate | The current simulation time. |
See:
Invoked once per frame. Implement
update to modify the camera or other parts of the scene.
| Name | Type | Description |
|---|---|---|
scene |
Scene | |
time |
JulianDate | The current simulation time. |
Type Definitions
Properties:
| Name | Type | Description |
|---|---|---|
startPosition |
Cartesian2 | The position of the mouse when the drag started. |
endPosition |
Cartesian2 | The position of the mouse when the drag ended. |