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  3. TAttrBasedQuadricError

TAttrBasedQuadricError

Quadric Error type for use in volume memory-less simplification with volume preservation constraints.

API > API/Runtime > API/Runtime/GeometryCore

Quadric Error type for use in volume memory-less simplification with volume preservation constraints. using the normal as three additional attributes to contribute to the quadric error. See: http://hhoppe.com/newqem.pdf

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

Syntax

template<typename RealType>  
class TAttrBasedQuadricError : public UE::Geometry::TVolPresQuadricError< RealType >

Inheritance Hierarchy

Constructors

Name Remarks Include Path Unreal Specifiers
  QuadricError.h  
  QuadricError.h  

TAttrBasedQuadricError ( const TVector< RealType >& P0,
const TVector< RealType >& P1,
const TVector< RealType >& P2,
const TVector< RealType >& N0,
const TVector< RealType >& N1,
const TVector< RealType >& N2,
const TVector< RealType >& NFace,
const TVector< RealType >& CenterPoint,
RealType AttrWeight
)

 Triangle Quadric constructor. Take vertex locations, vertex normals, face normal, and center of face. QuadricError.h  

Typedefs

Name Type Remarks Include Path
BaseClass TVolPresQuadricError< RealType >   QuadricError.h
BaseStruct TQuadricError< RealType >   QuadricError.h
ScalarType RealType   QuadricError.h

Variables

Public

Name Type Remarks Include Path Unreal Specifiers
a RealType Accumulated area QuadricError.h  
attrweight RealType Weight used to internally scale the attribute/ used to increase or decrease the importance of the normal in computing the optimal position QuadricError.h  
d RealType   QuadricError.h  
grad TVector< RealType > Additional planes for the attributes. QuadricError.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

void Add ( RealType w,
const TAttrBasedQuadricError& other
)

 Area Weighted Add QuadricError.h  

void ComputeAttributes ( const TVector< RealType >& point,
TVector< RealType >& attr
) const

   QuadricError.h  

RealType Evaluate ( const TVector< RealType >& point
) const

   QuadricError.h  

RealType Evaluate ( const TVector< RealType >& point,
const TVector< RealType >& InAttr
) const

   QuadricError.h  

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

 The optimal point minimizing the quadric error with respect to a volume conserving constraint QuadricError.h  

Static

Name Remarks Include Path Unreal Specifiers

static TAttrBasedQuadricError Zero()

   QuadricError.h  

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