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  3. TSegment2

TSegment2

2D Line Segment stored as Center point, normalized Direction vector, and scalar Extent

API > API/Runtime > API/Runtime/GeometryCore

References

   
Module GeometryCore
Header /Engine/Source/Runtime/GeometryCore/Public/SegmentTypes.h
Include #include "SegmentTypes.h"

Syntax

template<typename T>  
struct TSegment2

Remarks

2D Line Segment stored as Center point, normalized Direction vector, and scalar Extent

Variables

  Type Name Description
Public variable TVector2< T > Center Center point of segment
Public variable TVector2< T > Direction Normalized Direction vector of segment
Public variable T Extent Extent of segment, which is half the total length

Constructors

  Type Name Description
Public function    
Public function  

TSegment2 ( const TVector2< T >& Point0,
const TVector2< T >& Point1
)

 Construct a Segment from two Points
Public function  

TSegment2 ( const TVector2< T >& CenterIn,
const TVector2< T >& DirectionIn,
T ExtentIn
)

 Construct a segment from a Center Point, normalized Direction, and scalar Extent

Functions

  Type Name Description
Public function Const T

DistanceSquared ( const TVector2< T >& Point,
T& DistParameterOut
)

  
Public function Const T

DistanceSquared ( const TVector2< T >& Point
)

  
Public function Const TVector2< T >  
Public function Static T

FastDistanceSquared ( const TVector2< T >& StartPt,
const TVector2< T >& EndPt,
const TVector2< T >& QueryPt,
T Tolerance
)

 Calculate distance from QueryPoint to segment (StartPt,EndPt)
Public function Const TVector2< T >

GetPointFromIndex ( int i
)

  
Public function Const bool

Intersects ( const TSegment2< T >& OtherSegment,
T DotThresh,
T IntervalThresh
)

 Test if this segment intersects with OtherSegment.
Public function Const T

Length ()

  
Public function Const TVector2< T >

NearestPoint ( const TVector2< T >& QueryPoint
)

  
Public function Const TVector2< T >

PointAt ( T DistanceParameter
)

  
Public function Const TVector2< T >

PointBetween ( T UnitParameter
)

  
Public function Const T

Project ( const TVector2< T >& QueryPoint
)

  
Public function Const T

ProjectUnitRange ( const TVector2< T >& QueryPoint
)

  
Public function void

Reverse ()

 Reverse the segment
Public function void

SetEndPoint ( const TVector2< T >& Point
)

 Update the Segment with a new end point
Public function void

SetStartPoint ( const TVector2< T >& Point
)

 Update the Segment with a new start point
Public function Const TVector2< T >  
Protected function void

update_from_endpoints ( const TVector2< T >& p0,
const TVector2< T >& p1
)

 Update segment based on new endpoints
Public function int

WhichSide ( const TVector2< T >& QueryPoint,
T Tolerance
)

 Determine which side of the segment the query point lies on
Public function Static int

WhichSide ( const TVector2< T >& StartPt,
const TVector2< T >& EndPt,
const TVector2< T >& QueryPt,
T Tolerance
)

 Determine which side of the segment the query point lies on

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