初始提交: UE5.3项目基础框架

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

@@ -0,0 +1,66 @@
+// Copyright 2020-2024 CesiumGS, Inc. and Contributors
+
+#include "CesiumEllipsoidFunctions.h"
+#include "VecMath.h"
+#include <CesiumGeospatial/Ellipsoid.h>
+#include <CesiumGeospatial/GlobeTransforms.h>
+#include <CesiumUtility/Math.h>
+
+using namespace CesiumGeospatial;
+using namespace CesiumUtility;
+
+FVector CesiumEllipsoidFunctions::ScaleToGeodeticSurface(
+    const CesiumGeospatial::Ellipsoid& Ellipsoid,
+    const FVector& EllipsoidCenteredEllipsoidFixedPosition) {
+  std::optional<glm::dvec3> result = Ellipsoid.scaleToGeodeticSurface(
+      VecMath::createVector3D(EllipsoidCenteredEllipsoidFixedPosition));
+  if (result) {
+    return VecMath::createVector(*result);
+  } else {
+    return FVector(0.0, 0.0, 0.0);
+  }
+}
+
+FVector CesiumEllipsoidFunctions::GeodeticSurfaceNormal(
+    const CesiumGeospatial::Ellipsoid& Ellipsoid,
+    const FVector& EllipsoidCenteredEllipsoidFixedPosition) {
+  return VecMath::createVector(Ellipsoid.geodeticSurfaceNormal(
+      VecMath::createVector3D(EllipsoidCenteredEllipsoidFixedPosition)));
+}
+
+FVector CesiumEllipsoidFunctions::
+    LongitudeLatitudeHeightToEllipsoidCenteredEllipsoidFixed(
+        const CesiumGeospatial::Ellipsoid& Ellipsoid,
+        const FVector& LongitudeLatitudeHeight) {
+  glm::dvec3 cartesian =
+      Ellipsoid.cartographicToCartesian(Cartographic::fromDegrees(
+          LongitudeLatitudeHeight.X,
+          LongitudeLatitudeHeight.Y,
+          LongitudeLatitudeHeight.Z));
+  return VecMath::createVector(cartesian);
+}
+
+FVector CesiumEllipsoidFunctions::
+    EllipsoidCenteredEllipsoidFixedToLongitudeLatitudeHeight(
+        const CesiumGeospatial::Ellipsoid& Ellipsoid,
+        const FVector& EllipsoidCenteredEllipsoidFixedPosition) {
+  std::optional<Cartographic> result = Ellipsoid.cartesianToCartographic(
+      VecMath::createVector3D(EllipsoidCenteredEllipsoidFixedPosition));
+  if (result) {
+    return FVector(
+        Math::radiansToDegrees(result->longitude),
+        Math::radiansToDegrees(result->latitude),
+        result->height);
+  } else {
+    return FVector(0.0, 0.0, 0.0);
+  }
+}
+
+FMatrix CesiumEllipsoidFunctions::EastNorthUpToEllipsoidCenteredEllipsoidFixed(
+    const CesiumGeospatial::Ellipsoid& Ellipsoid,
+    const FVector& EllipsoidCenteredEllipsoidFixedPosition) {
+  return VecMath::createMatrix(
+      CesiumGeospatial::GlobeTransforms::eastNorthUpToFixedFrame(
+          VecMath::createVector3D(EllipsoidCenteredEllipsoidFixedPosition),
+          Ellipsoid));
+}