[游戏开发]cesium for unreal文档中的更新

以前调试过cesium for unreal，再调试时一惊，发现api变了。
静下心来思考流程
1，样本条要放在actor里
2，包含样本条的actor坐标放在原点
3,样本条坐标和法向量都要从经纬高到ue空间转换

变的只是api，所以深入了代码看了下，传递的经纬度从度数到了弧度。

废话不多说，上代码

//按照datatable进行获取数据
UCLASS()
class CESIUM_FLY_API APlaneTrack : public AActor
{
GENERATED_BODY()

public:
// Sets default values for this actor’s properties
APlaneTrack();

protected:
// Called when the game starts or when spawned
virtual void BeginPlay() override;

public:
// Called every frame
virtual void Tick(float DeltaTime) override;

public:
//用于保存航班数据的虚幻引擎数据表
UPROPERTY(EditAnywhere, Category = “FlightTracker”)
UDataTable* aircraftsRawDataTable;

//从两点间插值创建样条线轨迹
UFUNCTION(BlueprintCallable)
void LoadSplineTrackPoints();

UFUNCTION(BlueprintCallable)
USplineComponent* GetSplineTrack()
{
	return splineTrack;
}

//Cesium工具类，包含很多有用的坐标转换相关的函数
UPROPERTY(EditAnywhere, Category = "FlightTracker")
	ACesiumGeoreference* cesiumGeoreference;

private:
//根组件
class USceneComponent* RootScene;
//代表航班轨迹的样条线成员变量
USplineComponent* splineTrack;

};

// Called when the game starts or when spawned
void APlaneTrack::BeginPlay()
{
Super::BeginPlay();

}

// Called every frame
void APlaneTrack::Tick(float DeltaTime)
{
Super::Tick(DeltaTime);
}

void APlaneTrack::LoadSplineTrackPoints()
{
if (this->aircraftsRawDataTable == nullptr)
{
return;
}
if (nullptr == this->cesiumGeoreference)
{
return;
}

//初始化轨迹
splineTrack = NewObject<USplineComponent>(this,TEXT("SplineTrack"));
splineTrack->RegisterComponent();
//让样本线在运行模式下可见
splineTrack->SetDrawDebug(true);
//设置样本条的颜色
splineTrack->SetUnselectedSplineSegmentColor(FLinearColor(1.0f, 0.0f, 0.0f));
//设置样条线的粗细或者宽度
splineTrack->ScaleVisualizationWidth = 70.0f;
splineTrack->AttachToComponent(RootScene, FAttachmentTransformRules::KeepRelativeTransform);
int32 pointIndex = 0;
for (auto& row : this->aircraftsRawDataTable->GetRowMap())
{
	FAircraftRawData* point = (FAircraftRawData*)row.Value;
	//获取经纬高，转为Ue4坐标
	double pointLatitude = point->latitude;
	double pointLongitude = point->longitude;
	double pointHeight = point->height;

#if 1 //先统一加1000
pointHeight += 100;
#endif
//计算ue里的坐标
glm::dvec3 posXYZ = this->cesiumGeoreference->TransformLongitudeLatitudeHeightToUnreal(glm::dvec3(
FMath::DegreesToRadians(pointLongitude),
FMath::DegreesToRadians(pointLatitude),
FMath::DegreesToRadians(pointHeight)));
FVector splinePointPosition = FVector(posXYZ.x, posXYZ.y, posXYZ.z);
this->splineTrack->AddSplinePointAtIndex(splinePointPosition, pointIndex, ESplineCoordinateSpace::World, false);

	//获取飞机的向上方向
	const CesiumGeospatial::Ellipsoid& ell = CesiumGeospatial::Ellipsoid::WGS84;
	glm::dvec3 upVector = ell.geodeticSurfaceNormal(CesiumGeospatial::Cartographic(
		FMath::DegreesToRadians(pointLongitude),
		FMath::DegreesToRadians(pointLatitude),
		FMath::DegreesToRadians(pointHeight)));
	
	//计算飞机上的UE向上方向
	glm::dvec3 unrealUp = this->cesiumGeoreference->TransformLongitudeLatitudeHeightToUnreal(upVector);
	this->splineTrack->SetUpVectorAtSplinePoint(pointIndex, FVector(unrealUp.x, unrealUp.y, unrealUp.z), ESplineCoordinateSpace::World, false);
	pointIndex++;


}
this->splineTrack->UpdateSpline();
//this->AttachToComponent(this->cesiumGeoreference->GetRootComponent(), FAttachmentTransformRules::KeepRelativeTransform);

}
另外数据库里的高度都是负值，钻到地底下了。所以都加个100

运行Ok