cesium 模型旋转
时间: 2023-07-05 15:20:42 浏览: 29
要在Cesium中旋转模型,需要使用Cesium的实体(Entity)及其属性来实现。以下是一个旋转模型的示例代码:
```
var viewer = new Cesium.Viewer('cesiumContainer');
// 加载模型
var model = viewer.entities.add({
name : 'My Model',
position : Cesium.Cartesian3.fromDegrees(-75.62898254394531, 40.02804946899414, 0),
model : {
uri : 'path/to/model.gltf'
}
});
// 设置模型旋转
var initialHeading = Cesium.Math.toRadians(0);
var axis = new Cesium.Cartesian3(0.0, 0.0, 1.0);
var modelMatrix = Cesium.Transforms.headingPitchRollToFixedFrame(model.position, new Cesium.HeadingPitchRoll(initialHeading, 0.0, 0.0));
model.modelMatrix = modelMatrix;
viewer.clock.onTick.addEventListener(function(clock) {
// 每秒旋转10度
var seconds = clock.currentTime.secondsOfDay;
var angle = Cesium.Math.toRadians(seconds * 10);
var rotation = Cesium.Matrix3.fromAxisAngle(axis, angle);
modelMatrix = Cesium.Matrix4.multiplyByMatrix3(modelMatrix, rotation, modelMatrix);
model.modelMatrix = modelMatrix;
});
```
这个代码会加载一个模型,然后每秒钟旋转10度。你可以根据需要修改旋转速度和轴向。
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