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Util

API > API/Runtime > API/Runtime/GeometryCore

Classes

  Type Name Description
Public class ExpandEnumerable Generic "enumerable" object that provides begin/end semantics for an ExpandIterator suitable for use with range-based for.  
Public class ExpandIterator Wrapper around existing iterator that returns multiple values, of potentially different type, for each value that input iterator returns.  
Public class FArrayIndexSetsDecomposition FArrayIndexSetsDecomposition represents a decomposition of an integer index set into subsets, which are stored as arrays (ie this is just an array of arrays, where each sub-array has a unique integer identifier)  
Public class FCompactMaps Stores index remapping for vertices and triangles.  
Public class FElementLinearization FElementLinearization maps a potentially-sparse index list into a linear array.  
Public struct FGeometryError FGeometryError represents an error code/message emitted by a geometry operation.  
Public struct FGeometryResult FGeometryResult represents a combined "success/failure/etc" state for a geometry operation along with a set of Error and Warning codes/messages.  
Public struct FGeometryWarning FGeometryWarning represents a warning code/message emitted by a geometry operation.  
Public class FilteredIterator Wrapper around an existing iterator that skips over values for which the filter_func returns false.  
Public class FIndexFlagSet This class provides optionally sparse or dense boolean flags for a set of integer indices  
Public class FIndexPriorityQueue This is a min-heap priority queue class that does not use an object for each queue node.  
Public struct FMeshTriInfoCache Basic cache of per-triangle information for a mesh  
Public struct FModuloIteration FModuloIteration is used to iterate over a range of indices [0,N) using modulo-arithmetic.  
Public struct FOptionallySparseIndexMap Index map that supports dense or sparse storage, or a simple formula-based map (e.g. constant, identity, shift) For dense and sparse, the formula can be used to set default values.  
Public class FProgressCancel FProgressCancel is intended to be passed to long-running computes to do two things: 1) provide progress info back to caller 2) allow caller to cancel the computation  
Public class FRefCountVector FRefCountVector is used to keep track of which indices in a linear Index list are in use/referenced.  
Public class FSmallListSet FSmallListSet stores a set of short integer-valued variable-size lists.  
Public class FUniqueIndexSet FUniqueIndexSet is used to construct a list of unique elements of integers in range [0, MaxValue].  
Public class MappedIterator Wrapper around an object of type IteratorT that provides STL iterator-like semantics, that converts from the iteration type (FromType) to a new type (ToType).  
Public struct TBoundsGridIndexer3    
Public class TDynamicVector Blocked array with fixed, power-of-two sized blocks.  
Public class TDynamicVectorN    
Public class TPairExpandEnumerable Generic "enumerable" object that provides begin/end semantics for an TPairExpandIterator suitable for use with range-based for.  
Public class TPairExpandIterator Wrapper around existing integer iterator that returns either 0, 1, or 2 integers for each value that the original iterator returns.  
Public struct TScaleGridIndexer2 Convert between integer grid coordinates and scaled real-valued coordinates (ie assumes integer grid origin == real origin)  
Public struct TScaleGridIndexer3 Convert between integer grid coordinates and scaled real-valued coordinates (ie assumes integer grid origin == real origin)  
Public struct TShiftGridIndexer2 Convert between integer grid coordinates and scaled+translated real-valued coordinates  
Public struct TShiftGridIndexer3 Convert between integer grid coordinates and scaled+translated real-valued coordinates  
Public struct TSparseListSet TSparseListSet stores a sparse set of indexed variable-size lists.  
Public class TVector2Arrays Structure-of-Array (SoA) storage for a list of 2-vectors  
Public class TVector3Arrays Structure-of-Array (SoA) storage for a list of 3-vectors  

Typedefs

Name Description
FBoundsGridIndexer3d  
FBoundsGridIndexer3f  
FScaleGridIndexer2d  
FScaleGridIndexer2f  
FScaleGridIndexer3d  
FScaleGridIndexer3f  
FShiftGridIndexer2d  
FShiftGridIndexer2f  
FShiftGridIndexer3d  
FShiftGridIndexer3f  
TDynamicVector2d  
TDynamicVector2f  
TDynamicVector2i  
TDynamicVector3d  
TDynamicVector3f  
TDynamicVector3i  

Enums

  Type Name Description
Public enum UE::Geometry::EGeometryResultType EGeometryResultType is a generic result-code for use by geometry operations.  

Functions

  Type Name Description
Public function void

BufferUtil::AppendElements ( TArray< T >& AppendTo,
EnumerableType Enumerable
)

 Append enumerable elements to an array
Public function int

BufferUtil::CountValid ( const TArray< T >& Data,
const TFunction< bool(T)>& Predicate,
int MaxIndex,
int StartIndex
)

 Count number of elements in array (or within requested range) that pass Predicate test
Public function int

BufferUtil::FilterInPlace ( TArray< T >& Data,
const TFunction< bool(T)>& Predicate,
int MaxIndex,
int StartIndex
)

 Removes elements of array (or within requested range) that do not pass Predicate, by shifting forward.
Public function TVector< T >

IndexUtil::ApplyMap ( const TVector< T >& Val,
Func MapFunc
)

  
Public function FIndex3i

IndexUtil::ApplyMap ( const FIndex3i& Val,
Func MapFunc
)

  
Public function void

IndexUtil::ApplyMap ( TVector< T >& Val,
Func MapFunc
)

 Replace Val with MapFunc[Val] using index operator
Public function void

IndexUtil::ApplyMap ( FIndex3i& Val,
Func MapFunc
)

 Replace Val with MapFunc[Val] using index operator
Public function bool

IndexUtil::ArrayCheck ( const TArray< T >& ToCheck,
Func CheckFn
)

  
Public function int

IndexUtil::FindEdgeIndexInTri ( T VertexID1,
T VertexID2,
const Vec& TriangleVerts
)

 Find unordered edge [VertexID1,VertexID2] in TriangleVerts
Public function int

IndexUtil::FindEdgeOtherVertex ( const FIndex2i& EdgeVerts,
int VertexID
)

  
Public function int

IndexUtil::FindSharedEdgeVertex ( const FIndex2i& EdgeVerts1,
const FIndex2i& EdgeVerts2
)

  
Public function int

IndexUtil::FindTriIndex ( T VertexID,
const Vec& TriangleVerts
)

  
Public function int

IndexUtil::FindTriOrderedEdge ( T VertexID1,
T VertexID2,
const Vec& TriangleVerts
)

 Find ordered edge [VertexID1,VertexID2] in TriangleVerts
Public function int

IndexUtil::FindTriOtherIndex ( T VertexID1,
T VertexID2,
const Vec& TriangleVerts
)

 Find ordered edge [VertexID1,VertexID2] in TriangleVerts and then return the index of the remaining third vertex
Public function int

IndexUtil::FindTriOtherVtx ( T VertexID1,
T VertexID2,
const Vec& TriangleVerts
)

 Find ordered edge [VertexID1,VertexID2] in TriangleVerts and then return the remaining third vertex
Public function int

IndexUtil::FindTriOtherVtx ( int VertexID1,
int VertexID2,
const TDynamicVector< FIndex3i >& TriIndexArray,
int TriangleIndex
)

 Find ordered edge [VertexID1,VertexID2] in a triangle that is in an array of triangles, and return remaining third vertex
Public function int

IndexUtil::FindTriOtherVtxUnsafe ( T VertexID1,
T VertexID2,
const Vec& TriangleVerts
)

 Find third vertex of triangle that is not VertexID1 or VertexID2.
Public function int

IndexUtil::GetOtherTriIndex ( int i0,
int i1
)

 If i0 and i1 are unordered indices into a triangle, each in range 0-2, return the third index
Public function bool

IndexUtil::OrientTriEdge ( T& Vertex1,
T& Vertex2,
const Vec& TriangleVerts
)

 Assuming [Vertex1,Vertex2] is an unordered edge in TriangleVerts, return Vertex1 and Vertex2 in the correct order (ie the same as TriangleVerts)
Public function int

IndexUtil::OrientTriEdgeAndFindOtherVtx ( T& Vertex1,
T& Vertex2,
const Vec& TriangleVerts
)

 Assuming [Vertex1,Vertex2] is an unordered edge in TriangleVerts, return Vertex1 and Vertex2 in the correct order (ie the same as TriangleVerts), and returns the vertex ID of the other vertex
Public function bool

IndexUtil::SamePairUnordered ( T a0,
T a1,
T b0,
T b1
)

  
Public function GEOMETRYCORE_API void

RevolveUtil::GenerateSweepCurve ( const FVector3d& RevolutionAxisOrigin,
const FVector3d& RevolutionAxisDirection,
double DegreesOffset,
double DegreesPerStep,
double DownAxisOffset,
int TotalNumFrames,
TArray< FFrame3d >& SweepCurveOut
)

 Generates a sweep curve with the initial frame at the origin and the rest rotated around the given axis.
Public function GEOMETRYCORE_API void

RevolveUtil::MakeProfileCurveMidpointOfFirstStep ( TArray< FVector3d >& ProfileCurve,
double DegreesPerStep,
const FVector3d& RevolutionAxisOrigin,
const FVector3d& RevolutionAxisDirection
)

 Shifts the profile curve in such a way that it becomes the midpoint of the first rotation step (i.e., rotates it back half a step while projecting it outward onto the plane passing through the profile).
Public function GEOMETRYCORE_API bool

RevolveUtil::ProfileIsCCWRelativeRevolve ( TArray< FVector3d >& ProfileCurve,
const FVector3d& RevolutionAxisOrigin,
const FVector3d& RevolutionAxisDirection,
bool bProfileCurveIsClosed
)

 Returns true if the profile curve is counterclockwise relative to the rotation direction.
Public function GEOMETRYCORE_API void

RevolveUtil::WeldPointsOnAxis ( TArray< FVector3d >& ProfileCurve,
const FVector3d& RevolutionAxisOrigin,
const FVector3d& RevolutionAxisDirection,
double Tolerance,
TSet< int32 >& ProfileVerticesToWeldOut
)

 Checks the profile curve for points that lie within a particular tolerance of the revolution axis.
Public function FColor  
Public function FLinearColor X11 Colors - https://www.w3.org/TR/css-color-3/#html4 python code to parse text file:
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function void Apply a Linear to sRGB color transformation on a given color vector.
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function VectorType

UE::Geometry::LinearColors::MakeColor3f ( float R,
float G,
float B
)

  
Public function VectorType

UE::Geometry::LinearColors::MakeColor4f ( float R,
float G,
float B,
float A
)

  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function VectorType Select a Color from a fixed color palette based on given Index
Public function FColor Select a FColor from a fixed color palette based on given Index
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function void Apply an sRGB to Linear color transformation on a given color vector.
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  
Public function FColor  
Public function FLinearColor  

Variables

  Type Name Description
Public variable const int[6] BoxFaceNormals Box Face Normal Axes associated with BoxFaces.
Public variable const int[6][4] BoxFaces Corner vertices of box faces - see FOrientedBox3.GetCorner for points associated w/ indexing
Public variable const FVector2i[4] BoxFacesUV Corner unit-UV ordering of box faces - {0,0}, {1,0}, {1,1}, {0,1}
Public variable const FVector3i[26] GridOffsets26 All permutations of (+-1, +-1, +-1), can be used to iterate over connected face/edge/corner neighbours of a grid cell
Public variable const FVector2i[4] GridOffsets4 Integer indices offsets in x/y directions
Public variable const FVector3i[6] GridOffsets6 Integer indices offsets in x/y/z directions, corresponds w/ BoxFaces directions
Public variable const FVector2i[8] GridOffsets8 Integer indices offsets in x/y directions and diagonals

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