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  3. FEvolutionLinearSystem

FEvolutionLinearSystem

Assemble and solve the linear system generated by the force based solver in [FEvolution](API\Runtime\Chaos\FEvolution).

API > API/Runtime > API/Runtime/Chaos

Assemble and solve the linear system generated by the force based solver in FEvolution. Currently just supports using CG to solve the linear system generated by using newton's method with backward euler. The matrix format and CG is controlled by BlockSparseLinearSystem.

   
Name FEvolutionLinearSystem
Type class
Header File /Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/SoftsEvolutionLinearSystem.h
Include Path #include "Chaos/SoftsEvolutionLinearSystem.h"

Syntax

class FEvolutionLinearSystem

Constructors

Name Remarks Include Path Unreal Specifiers
  Chaos/SoftsEvolutionLinearSystem.h  
  Chaos/SoftsEvolutionLinearSystem.h  
  Chaos/SoftsEvolutionLinearSystem.h  
  Chaos/SoftsEvolutionLinearSystem.h  

Destructors

Name Remarks Include Path Unreal Specifiers

~FEvolutionLinearSystem()

   Chaos/SoftsEvolutionLinearSystem.h  

Variables

Protected

Name Type Remarks Include Path Unreal Specifiers
bDfDxTimesVTerm bool   Chaos/SoftsEvolutionLinearSystem.h  
CompactifiedIndices TArray< int32 >   Chaos/SoftsEvolutionLinearSystem.h  
LastSolveError FSolverReal   Chaos/SoftsEvolutionLinearSystem.h  
LastSolveIterations int32 Debug reporting. Chaos/SoftsEvolutionLinearSystem.h  
Matrix TBlockSparseSymmetricLinearSystem< FSolverReal, 3 >   Chaos/SoftsEvolutionLinearSystem.h  
NumCompactIndices int32   Chaos/SoftsEvolutionLinearSystem.h  
Parameters const FEvolutionLinearSystemSolverParameters *   Chaos/SoftsEvolutionLinearSystem.h  
RHS TArray< FSolverVec3 >   Chaos/SoftsEvolutionLinearSystem.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

void AddForce ( const FSolverParticlesRange& Particles,
const FSolverVec3& Force,
int32 ParticleIndex,
const FSolverReal Dt
)

   Chaos/SoftsEvolutionLinearSystem.h  

void AddSymmetricForceDerivative ( const FSolverParticlesRange& Particles,
const FSolverMatrix33*const Df1Dx2,
const FSolverMatrix33*const Df1Dv2,
int32 ParticleIndex1,
int32 ParticleIndex2,
const FSolverReal Dt
)

 Df1Dx2 is Derivative of F for ParticleIndex1 with respect to X of Particle2. Chaos/SoftsEvolutionLinearSystem.h  

FSolverReal GetLastSolveError()

   Chaos/SoftsEvolutionLinearSystem.h  

int32 GetLastSolveIterations()

   Chaos/SoftsEvolutionLinearSystem.h  

void Init ( const FSolverParticlesRange& Particles,
const FSolverReal Dt,
bool bInFirstNewtonIteration,
const FEvolutionLinearSystemSolverParameters& Params
)

   Chaos/SoftsEvolutionLinearSystem.h  

bool RequiresSPDForceDerivatives()

   Chaos/SoftsEvolutionLinearSystem.h  

void ReserveForParallelAdd ( const int32 NumDiagonalEntries,
const int32 NumOffDiagonalEntries
)

   Chaos/SoftsEvolutionLinearSystem.h  

bool Solve ( FSolverParticlesRange& Particles,
const FSolverReal Dt
)

   Chaos/SoftsEvolutionLinearSystem.h  

Operators

Name Remarks Include Path Unreal Specifiers
  Chaos/SoftsEvolutionLinearSystem.h  
  Chaos/SoftsEvolutionLinearSystem.h  

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