cesium primitive立方体沿着y轴旋转 90 度代码

以下是 C 知道的回答：

可以使用以下代码将 Cesium primitive 立方体沿着 y 轴旋转 90 度：

var entity = viewer.entities.add({
    name: 'Rotating box',
    position: Cesium.Cartesian3.fromDegrees(-75.59777, 40.03883),
    box: {
        dimensions: new Cesium.Cartesian3(400000., 300000., 500000.),
        material: Cesium.Color.RED
    }
});

var initialOrientation = Cesium.Transforms.headingPitchRollQuaternion(
    entity.position.getValue(viewer.clock.currentTime),
    new Cesium.HeadingPitchRoll(., ., .)
);

var rotatingOrientation = Cesium.Quaternion.multiply(
    Cesium.Quaternion.fromAxisAngle(Cesium.Cartesian3.UNIT_Y, Cesium.Math.toRadians(90)),
    initialOrientation,
    new Cesium.Quaternion()
);

viewer.clock.onTick.addEventListener(function(clock) {
    var angle = Cesium.Math.TWO_PI * (clock.currentTime.secondsOfDay / 240.);
    var axis = new Cesium.Cartesian3(Math.cos(angle), Math.sin(angle), Math.sin(angle));
    entity.orientation = Cesium.Quaternion.multiply(
        Cesium.Quaternion.fromAxisAngle(axis, angle),
        rotatingOrientation,
        new Cesium.Quaternion()
    );
});

希望能对您有所帮助。