Cesium控制模型旋转2019-11-15

/**
 * 模型水平方向旋转——主要用于大包翻转台
 * 例子正值、负值代表正反方向旋转
 * modelRotate(entity,270,10);modelRotate(entity,-90,5);
 * @param model 模型
 * @param angle 旋转角度
 * @param seconds 多少秒旋转结束
 */
function modelHeadingRotate(model,angle,seconds) {
    let state = false;
    if(angle>0){
        state = true;
    }
    let modelHPR = Cesium.Transforms.fixedFrameToHeadingPitchRoll(computeModelMatrix(model,Cesium.JulianDate.now()));
    let angle_ = Cesium.Math.toRadians(angle);
    let starthpr={heading:modelHPR.heading},endhpr={heading:modelHPR.heading+angle_};
    let center = model.position._value;
    let heading_ = Math.abs((endhpr.heading-starthpr.heading)/(seconds*20));
    let index = 0;
    let interval = setInterval(function(){
        let nowhpr  = Cesium.Transforms.fixedFrameToHeadingPitchRoll(computeModelMatrix(model,Cesium.JulianDate.now()));
        if(state){
            if(index>angle_){
                clearInterval(interval);
            }else{
                index+=heading_;
                model.orientation=Cesium.Transforms.headingPitchRollQuaternion(center, new Cesium.HeadingPitchRoll(nowhpr.heading+=heading_,0,0));
            }
        }else{
            if(index>angle_){
                index-=heading_;
                model.orientation=Cesium.Transforms.headingPitchRollQuaternion(center, new Cesium.HeadingPitchRoll(nowhpr.heading-=heading_,0,0));
            }else{
                clearInterval(interval);
            }
        }
    },50);

}
/**
 * 模型水平方向旋转——主要用于大包翻转台
 * 例子正值、负值代表正反方向旋转
 * modelRotate(entity,270,10);modelRotate(entity,-90,5);
 * @param model 模型
 * @param angle 旋转角度
 * @param seconds 多少秒旋转结束
 */
function modelRollRotate(model,angle,seconds) {
    let state = false;
    if(angle>0){
        state = true;
    }
    let modelHPR = Cesium.Transforms.fixedFrameToHeadingPitchRoll(computeModelMatrix(model,Cesium.JulianDate.now()));
    let angle_ = Cesium.Math.toRadians(angle);
    let starthpr={roll:modelHPR.roll},endhpr={roll:modelHPR.roll+angle_};
    let center = model.position._value;
    let roll_ = Math.abs((endhpr.roll-starthpr.roll)/(seconds*20));
    let index = 0;
    let interval = setInterval(function(){
        let nowhpr  = Cesium.Transforms.fixedFrameToHeadingPitchRoll(computeModelMatrix(model,Cesium.JulianDate.now()));
        if(state){
            if(index>angle_){
                clearInterval(interval);
            }else{
                index+=roll_;
                model.orientation=Cesium.Transforms.headingPitchRollQuaternion(center, new Cesium.HeadingPitchRoll(0,0,nowhpr.roll+=roll_));
            }
        }else{
            if(index>angle_){
                index-=roll_;
                model.orientation=Cesium.Transforms.headingPitchRollQuaternion(center, new Cesium.HeadingPitchRoll(0,0,nowhpr.roll-=roll_));
            }else{
                clearInterval(interval);
            }
        }
    },50);

}