48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
// Copyright 2020-2024 CesiumGS, Inc. and Contributors
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#pragma once
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#include "Math/BoxSphereBounds.h"
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#include "Math/TransformNonVectorized.h"
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#include <Cesium3DTilesSelection/BoundingVolume.h>
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#include <glm/mat3x3.hpp>
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#include <glm/mat4x4.hpp>
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struct CalcBoundsOperation {
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const FTransform& localToWorld;
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const glm::dmat4& highPrecisionTransform;
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// Bounding volumes are expressed in tileset coordinates, which is usually
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// ECEF.
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//
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// - `localToWorld` goes from model coordinates to Unreal world
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// coordinates, where model coordinates include the tile's transform as
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// well as any glTF node transforms.
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// - `highPrecisionTransform` transforms from model coordinates to tileset
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// coordinates.
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//
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// So to transform a bounding volume, we need to first transform by the
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// inverse of `highPrecisionTransform` in order bring the bounding volume
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// into model coordinates, and then transform by `localToWorld` to bring the
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// bounding volume into Unreal world coordinates.
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glm::dmat4 getModelToUnrealWorldMatrix() const;
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glm::dmat4 getTilesetToUnrealWorldMatrix() const;
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FBoxSphereBounds
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operator()(const CesiumGeometry::BoundingSphere& sphere) const;
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FBoxSphereBounds
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operator()(const CesiumGeometry::OrientedBoundingBox& box) const;
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FBoxSphereBounds
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operator()(const CesiumGeospatial::BoundingRegion& region) const;
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FBoxSphereBounds operator()(
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const CesiumGeospatial::BoundingRegionWithLooseFittingHeights& region)
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const;
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FBoxSphereBounds
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operator()(const CesiumGeospatial::S2CellBoundingVolume& s2) const;
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}; |