Class TimeStepPF

Defined in File TimeStepPF.h

Inheritance Relationships

Base Type

public SPH::TimeStep (Class TimeStep)

Class Documentation

class TimeStepPF : public SPH::TimeStep 

This class implements the Projective Fluids approach introduced by Weiler, Koschier and Bender [WKB16].

References:

[WKB16] Marcel Weiler, Dan Koschier, and Jan Bender. Projective fluids. In Proceedings of the 9th International Conference on Motion in Games, MIG ‘16, 79-84. New York, NY, USA, 2016. ACM. URL: http://doi.acm.org/10.1145/2994258.2994282

Public Functions

TimeStepPF()

virtual ~TimeStepPF(void)

virtual void step() override

virtual void reset() override

virtual void resize() override

inline virtual std::string getMethodName(): returns the name of the method

inline virtual int getNumIterations()

Public Static Functions

static void matrixVecProd(const Real *vec, Real *result, void *userData)

Public Static Attributes

static std::string METHOD_NAME = "Projective Fluids"

static int SOLVER_ITERATIONS = -1

static int MIN_ITERATIONS = -1

static int MAX_ITERATIONS = -1

static int MAX_ERROR = -1

static int STIFFNESS = -1

Protected Types

using VectorXr = Eigen::Matrix<Real, -1, 1>

using VectorXrMap = Eigen::Map<VectorXr>

using Solver = Eigen::ConjugateGradient<MatrixReplacement, Eigen::Lower | Eigen::Upper, JacobiPreconditioner3D>

Protected Functions

void preparePreconditioner()

void initialGuessForPositions(const unsigned int fluidModelIndex)

void solvePDConstraints()

void updatePositionsAndVelocity(const VectorXr &x)

void addAccellerationToVelocity()

void matrixFreeRHS(const VectorXr &x, VectorXr &result): compute the right hand side of the system in a matrix-free fashion and store the result in result

virtual void performNeighborhoodSearchSort(): Important: First call m_model->performNeighborhoodSearchSort() to call the z_sort of the neighborhood search.

virtual void emittedParticles(FluidModel *model, const unsigned int startIndex) override

virtual void initParameters() override

Protected Attributes

SimulationDataPF m_simulationData

Solver m_solver

unsigned int m_iterations

Real m_maxError

unsigned int m_minIterations

unsigned int m_maxIterations

Real m_stiffness

unsigned int m_numActiveParticlesTotal

Protected Static Functions

static FORCE_INLINE void diagonalMatrixElement (const unsigned int row, Vector3r &result, void *userData)