初始提交: UE5.3项目基础框架

Plugins/CesiumForUnreal/Source/CesiumRuntime/Private/Cesium3DTilesetRoot.cpp

@@ -0,0 +1,71 @@
+// Copyright 2020-2024 CesiumGS, Inc. and Contributors
+
+#include "Cesium3DTilesetRoot.h"
+#include "Cesium3DTileset.h"
+#include "CesiumRuntime.h"
+#include "CesiumUtility/Math.h"
+#include "Engine/World.h"
+#include "VecMath.h"
+
+UCesium3DTilesetRoot::UCesium3DTilesetRoot()
+    : _absoluteLocation(0.0, 0.0, 0.0), _tilesetToUnrealRelativeWorld(1.0) {
+  PrimaryComponentTick.bCanEverTick = false;
+}
+
+void UCesium3DTilesetRoot::HandleGeoreferenceUpdated() {
+  UE_LOG(
+      LogCesium,
+      Verbose,
+      TEXT("Called HandleGeoreferenceUpdated for tileset root %s"),
+      *this->GetName());
+  this->_updateTilesetToUnrealRelativeWorldTransform();
+}
+
+const glm::dmat4&
+UCesium3DTilesetRoot::GetCesiumTilesetToUnrealRelativeWorldTransform() const {
+  return this->_tilesetToUnrealRelativeWorld;
+}
+
+// Called when the game starts
+void UCesium3DTilesetRoot::BeginPlay() {
+  Super::BeginPlay();
+
+  this->_updateAbsoluteLocation();
+  this->_updateTilesetToUnrealRelativeWorldTransform();
+}
+
+bool UCesium3DTilesetRoot::MoveComponentImpl(
+    const FVector& Delta,
+    const FQuat& NewRotation,
+    bool bSweep,
+    FHitResult* OutHit,
+    EMoveComponentFlags MoveFlags,
+    ETeleportType Teleport) {
+  bool result = USceneComponent::MoveComponentImpl(
+      Delta,
+      NewRotation,
+      bSweep,
+      OutHit,
+      MoveFlags,
+      Teleport);
+
+  this->_updateAbsoluteLocation();
+  this->_updateTilesetToUnrealRelativeWorldTransform();
+
+  return result;
+}
+
+void UCesium3DTilesetRoot::_updateAbsoluteLocation() {
+  const FVector& newLocation = this->GetRelativeLocation();
+  this->_absoluteLocation = VecMath::createVector3D(newLocation);
+}
+
+void UCesium3DTilesetRoot::_updateTilesetToUnrealRelativeWorldTransform() {
+  ACesium3DTileset* pTileset = this->GetOwner<ACesium3DTileset>();
+
+  this->_tilesetToUnrealRelativeWorld = VecMath::createMatrix4D(
+      pTileset->ResolveGeoreference()
+          ->ComputeEarthCenteredEarthFixedToUnrealTransformation());
+
+  pTileset->UpdateTransformFromCesium();
+}