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TQuadricError

QuadricError represents a quadratic function that evaluates distance to plane.

API > API/Runtime > API/Runtime/GeometryCore

QuadricError represents a quadratic function that evaluates distance to plane. Stores minimal 10-coefficient form, following http://mgarland.org/files/papers/qtheory.pdf (symmetric matrix A, vector b, constant c)

   
Name TQuadricError
Type struct
Header File /Engine/Source/Runtime/GeometryCore/Public/QuadricError.h
Include Path #include "QuadricError.h"

Syntax

template<typename RealType>  
struct TQuadricError

Derived Classes

Constructors

Name Remarks Include Path Unreal Specifiers

TQuadricError ( const TVector< RealType >& Normal,
const TVector< RealType >& Point
)

 Construct TQuadricError a plane with the given normal and a point on plane QuadricError.h  
  QuadricError.h  

TQuadricError ( const TQuadricError& a,
const TQuadricError& b
)

 Construct TQuadricError that is the sum of two other TQuadricErrors QuadricError.h  

Typedefs

Name Type Remarks Include Path
ScalarType RealType   QuadricError.h

Variables

Public

Name Type Remarks Include Path Unreal Specifiers
Axx RealType   QuadricError.h  
Axy RealType   QuadricError.h  
Axz RealType   QuadricError.h  
Ayy RealType   QuadricError.h  
Ayz RealType   QuadricError.h  
Azz RealType   QuadricError.h  
bx RealType   QuadricError.h  
by RealType   QuadricError.h  
bz RealType   QuadricError.h  
c RealType   QuadricError.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

void Add ( const TQuadricError& b
)

   QuadricError.h  

void Add ( RealType w,
const TQuadricError& b
)

 Add scalar multiple of a TQuadricError to this TQuadricError QuadricError.h  

void AddSeamQuadric ( const TQuadricError& b
)

   QuadricError.h  

RealType Evaluate ( const UE::Math::TVector< RealType >& pt
) const

 Evaluates p*A*p + 2*dot(p,b) + c QuadricError.h  

TVector< RealType > MultiplyA ( const UE::Math::TVector< RealType >& pt
) const

   QuadricError.h  

bool OptimalPoint ( UE::Math::TVector< RealType >& OutResult,
RealType minThresh
) const

   QuadricError.h  

void Scale ( RealType w
)

 Scale this quadric by the weight 'w' QuadricError.h  

bool SolveAxEqualsb ( UE::Math::TVector< RealType >& OutResult,
const RealType bvecx,
const RealType bvecy,
const RealType bvecz,
const RealType minThresh
) const

   QuadricError.h  

void Subtract ( const TQuadricError& b
)

   QuadricError.h  

void SubtractSeamQuadric ( const TQuadricError& b
)

   QuadricError.h  

Static

Name Remarks Include Path Unreal Specifiers

static bool InvertSymmetricMatrix ( const RealType SM,
RealType InvSM,
RealType minThresh
)

   QuadricError.h  

static TVector< RealType > MultiplySymmetricMatrix ( const RealType SM,
const UE::Math::TVector< RealType >& vec
)

   QuadricError.h  

static TVector< RealType > MultiplySymmetricMatrix ( const RealType SM,
const RealType vec
)

   QuadricError.h  

static TQuadricError Zero()

   QuadricError.h  

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