57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
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// Copyright 2020-2024 CesiumGS, Inc. and Contributors
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#pragma once
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#include "Components/SceneComponent.h"
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#include <glm/mat4x4.hpp>
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#include <glm/vec3.hpp>
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#include "Cesium3DTilesetRoot.generated.h"
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UCLASS()
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class UCesium3DTilesetRoot : public USceneComponent {
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GENERATED_BODY()
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public:
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UCesium3DTilesetRoot();
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/**
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* @brief Gets the transform from the "Cesium Tileset" reference frame to the
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* "Unreal Relative World" reference frame.
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*
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* Gets a matrix that transforms coordinates from the "Cesium Tileset"
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* reference frame (which is _usually_ Earth-centered, Earth-fixed) to Unreal
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* Engine's relative world coordinates (i.e. relative to the world
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* OriginLocation).
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*
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* See {@link reference-frames.md}.
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*
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* This transformation is a function of :
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* * The location of the Tileset in "Unreal Absolute World" coordinates.
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* * The rotation and scale of the tileset relative to the Unreal World.
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* * `UWorld::OriginLocation`
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* * The transformation from ellipsoid-centered to georeferenced
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* coordinates, as provided by `CesiumGeoreference`.
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*/
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const glm::dmat4& GetCesiumTilesetToUnrealRelativeWorldTransform() const;
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UFUNCTION()
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void HandleGeoreferenceUpdated();
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protected:
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virtual void BeginPlay() override;
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virtual bool MoveComponentImpl(
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const FVector& Delta,
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const FQuat& NewRotation,
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bool bSweep,
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FHitResult* OutHit = NULL,
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EMoveComponentFlags MoveFlags = MOVECOMP_NoFlags,
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ETeleportType Teleport = ETeleportType::None) override;
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private:
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void _updateAbsoluteLocation();
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void _updateTilesetToUnrealRelativeWorldTransform();
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glm::dvec3 _absoluteLocation;
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glm::dmat4 _tilesetToUnrealRelativeWorld;
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};
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