//获取视角(返回视角)
function getCameraStatus() {
    var cameraState = _viewer.getCameraStatus();
    return JSON.stringify(cameraState);
}

//设置视角
function setCameraStatus(cameraState) {
    _viewer.setCameraStatus(cameraState);
    _viewer.render();
}

//获取视角拓展
function getCameraStatusEx(displayColor) {
    var color;
    if (displayColor == null || displayColor == "")
        color = new Glodon.Web.Graphics.Color("#D9D9FF", 0.8);
    else
        color = new Glodon.Web.Graphics.Color(displayColor.DisplayHtmlColor, displayColor.ColorTransparency);
    var cameraState = _viewer.getCameraStatus();
    if (_wt == null)
        initWalkThrough();
    var keyFrame = _wt.addKeyFrame();
    //创建快照
    _viewer.createSnapshotAsync(color, function (data) {
        var ex = { CameraStatus_3D: cameraState, KeyFrame: keyFrame, ThumbnailImage: data };
        callbackObj.setCameraStatusEx(JSON.stringify(ex));
    });
}
//获取当前模型快照
function createSnapshotAsync(displayColor) {
    var color;
    if (displayColor == null || displayColor == "")
        color = new Glodon.Web.Graphics.Color("#D9D9FF", 0.8);
    else
        color = new Glodon.Web.Graphics.Color(displayColor.DisplayHtmlColor, displayColor.ColorTransparency);
    //创建快照
    _viewer.createSnapshotAsync(color, function (data) {
        callbackObj.setSnapshot(data);
    });
}