FreedoX

Class: FdPlaneViewCameraHelper

FdCamera. FdPlaneViewCameraHelper

new FdPlaneViewCameraHelper()

无球场景下相机操作辅助类

Camera的一些设置函数如heading、pitch、lookAt、setView、flyTo等，由于其计算逻辑与椭球体相关，在无球的笛卡尔坐标系下不可用 为在无球的笛卡尔坐标系下提供类似的操作封装本类

方向角定义： 1.坐标系X轴正向朝东，Y轴正向朝北，Z轴正向朝上 2.偏航角（heading）：相机方向与正北向的夹角，偏东为正 3.俯仰角（pitch）：相机方向与水平面的夹角，向上为正

Example
Freedo.FdCamera.FdPlaneViewCameraHelper.flyToBoundingSphere(viewer.scene, tileset.boundingSphere, {
     offset: new Freedo.HeadingPitchRange(0.0, -0.5, 0.0),
     duration: 0.0
});

Methods

<static> cancelFlight()

取消相机飞行

<static> flyTo(scene, options)

相机飞行

Parameters:
Name Type Description
scene Scene

场景对象
options Object

选项对象:

Properties
Name Type Argument Description
destination Cartesian3

目标位置.
orientation Object <optional>

目标朝向: {direction:,up:} 或 {heading:,pitch:}.
duration Number <optional>

飞行时间.
complete Camera~FlightCompleteCallback <optional>

完成时执行的回调函数.
cancel Camera~FlightCancelledCallback <optional>

取消时执行的回调函数.
easingFunction EasingFunction | EasingFunction~Callback <optional>

插值方法.

<static> flyToBoundingSphere(scene, options)

相机飞行

Parameters:
Name Type Description
scene Scene

场景对象
options Object

选项对象:

Properties
Name Type Argument Description
destination Cartesian3

目标位置.
duration Number <optional>

飞行时间.
offset HeadingPitchRange <optional>

The offset from the target in the local east-north-up reference frame centered at the target.
complete Camera~FlightCompleteCallback <optional>

完成时执行的回调函数.
cancel Camera~FlightCancelledCallback <optional>

取消时执行的回调函数.
easingFunction EasingFunction | EasingFunction~Callback <optional>

插值方法.

<static> lookAt(camera, target, offset)

设置相机视角

Parameters:
Name Type Description
camera Camera

相机对象
target Cartesian3

看向的位置.
offset Cartesian3 | HeadingPitchRange

相对target的偏移.

<static> setView(camera, options)

设置相机视角

Parameters:
Name Type Description
camera Camera

相机对象
options Object

选项对象:

Properties
Name Type Argument Description
destination Cartesian3

目标位置.
orientation Object <optional>

目标朝向: {direction:,up:} 或 {heading:,pitch:}.