#include <InversionBarrierForm.hpp>

Inheritance diagram for polyfem::solver::InversionBarrierForm:

Collaboration diagram for polyfem::solver::InversionBarrierForm:

Public Member Functions
	InversionBarrierForm (const Eigen::MatrixXd &rest_positions, const Eigen::MatrixXi &elements, const int dim, const double vhat)

std::string	name () const override

bool	is_step_valid (const Eigen::VectorXd &x0, const Eigen::VectorXd &x1) const override
	Determine if a step from solution x0 to solution x1 is allowed.

Public Member Functions inherited from polyfem::solver::Form
virtual	~Form ()

virtual void	init (const Eigen::VectorXd &x)
	Initialize the form.

virtual void	finish ()

virtual double	value (const Eigen::VectorXd &x) const
	Compute the value of the form multiplied with the weigth.

Eigen::VectorXd	value_per_element (const Eigen::VectorXd &x) const
	Compute the value of the form multiplied with the weigth.

virtual void	first_derivative (const Eigen::VectorXd &x, Eigen::VectorXd &gradv) const
	Compute the first derivative of the value wrt x multiplied with the weigth.

void	second_derivative (const Eigen::VectorXd &x, StiffnessMatrix &hessian) const
	Compute the second derivative of the value wrt x multiplied with the weigth.

virtual double	max_step_size (const Eigen::VectorXd &x0, const Eigen::VectorXd &x1) const
	Determine the maximum step size allowable between the current and next solution.

virtual void	line_search_begin (const Eigen::VectorXd &x0, const Eigen::VectorXd &x1)
	Initialize variables used during the line search.

virtual void	line_search_end ()
	Clear variables used during the line search.

virtual void	post_step (const polysolve::nonlinear::PostStepData &data)
	Update fields after a step in the optimization.

virtual void	solution_changed (const Eigen::VectorXd &new_x)
	Update cached fields upon a change in the solution.

virtual void	update_quantities (const double t, const Eigen::VectorXd &x)
	Update time-dependent fields.

virtual void	init_lagging (const Eigen::VectorXd &x)
	Initialize lagged fields TODO: more than one step.

virtual void	update_lagging (const Eigen::VectorXd &x, const int iter_num)
	Update lagged fields.

virtual int	max_lagging_iterations () const
	Get the maximum number of lagging iteration allowable.

virtual bool	uses_lagging () const
	Does this form require lagging?

void	set_project_to_psd (bool val)
	Set project to psd.

bool	is_project_to_psd () const
	Get if the form's second derivative is projected to psd.

void	enable ()
	Enable the form.

void	disable ()
	Disable the form.

void	set_enabled (const bool enabled)
	Set if the form is enabled.

bool	enabled () const
	Determine if the form is enabled.

virtual double	weight () const
	Get the form's multiplicative constant weight.

void	set_weight (const double weight)
	Set the form's multiplicative constant weight.

virtual bool	is_step_collision_free (const Eigen::VectorXd &x0, const Eigen::VectorXd &x1) const
	Checks if the step is collision free.

void	set_output_dir (const std::string &output_dir)

virtual void	set_scale (const double scale)
	sets the scale for the form

Protected Member Functions
double	value_unweighted (const Eigen::VectorXd &x) const override
	Compute the value of the form.

void	first_derivative_unweighted (const Eigen::VectorXd &x, Eigen::VectorXd &gradv) const override
	Compute the first derivative of the value wrt x.

void	second_derivative_unweighted (const Eigen::VectorXd &x, StiffnessMatrix &hessian) const override
	Compute the second derivative of the value wrt x.

Protected Member Functions inherited from polyfem::solver::Form
std::string	resolve_output_path (const std::string &path) const

virtual Eigen::VectorXd	value_per_element_unweighted (const Eigen::VectorXd &x) const
	Compute the value of the form multiplied per element.

Static Protected Member Functions
static double	element_volume (const Eigen::MatrixXd &element_vertices)

static Eigen::VectorXd	element_volume_gradient (const Eigen::MatrixXd &element_vertices)

static Eigen::MatrixXd	element_volume_hessian (const Eigen::MatrixXd &element_vertices)

Private Attributes
Eigen::MatrixXd	rest_positions_

Eigen::MatrixXi	elements_

int	dim_

double	vhat_

Additional Inherited Members
Protected Attributes inherited from polyfem::solver::Form
bool	project_to_psd_ = false
	If true, the form's second derivative is projected to be positive semidefinite.

double	weight_ = 1
	weight of the form (e.g., AL penalty weight or Δt²)

bool	enabled_ = true
	If true, the form is enabled.

std::string	output_dir_

Detailed Description

Definition at line 10 of file InversionBarrierForm.hpp.

Constructor & Destructor Documentation

◆ InversionBarrierForm()

polyfem::solver::InversionBarrierForm::InversionBarrierForm	(	const Eigen::MatrixXd &	rest_positions,
		const Eigen::MatrixXi &	elements,
		const int	dim,
		const double	vhat
	)

Definition at line 14 of file InversionBarrierForm.cpp.

Member Function Documentation

◆ element_volume()

double polyfem::solver::InversionBarrierForm::element_volume ( const Eigen::MatrixXd & element_vertices )

staticprotected

Definition at line 114 of file InversionBarrierForm.cpp.

References polyfem::utils::tetrahedron_volume(), and polyfem::utils::triangle_area().

Referenced by is_step_valid().

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◆ element_volume_gradient()

Eigen::VectorXd polyfem::solver::InversionBarrierForm::element_volume_gradient ( const Eigen::MatrixXd & element_vertices )

staticprotected

Definition at line 123 of file InversionBarrierForm.cpp.

References polyfem::utils::tetrahedron_volume_gradient(), and polyfem::utils::triangle_area_2D_gradient().

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◆ element_volume_hessian()

Eigen::MatrixXd polyfem::solver::InversionBarrierForm::element_volume_hessian ( const Eigen::MatrixXd & element_vertices )

staticprotected

Definition at line 148 of file InversionBarrierForm.cpp.

References polyfem::utils::tetrahedron_volume_hessian(), and polyfem::utils::triangle_area_2D_hessian().

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◆ first_derivative_unweighted()

void polyfem::solver::InversionBarrierForm::first_derivative_unweighted	(	const Eigen::VectorXd &	x,
		Eigen::VectorXd &	gradv
	)		const

overrideprotectedvirtual

Compute the first derivative of the value wrt x.

Parameters

[in]	x	Current solution
[out]	gradv	Output gradient of the value wrt x

Implements polyfem::solver::Form.

Definition at line 44 of file InversionBarrierForm.cpp.

References dim_, elements_, polyfem::utils::maybe_parallel_for(), rest_positions_, polyfem::utils::unflatten(), V, vhat_, and x.

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◆ is_step_valid()

bool polyfem::solver::InversionBarrierForm::is_step_valid	(	const Eigen::VectorXd &	x0,
		const Eigen::VectorXd &	x1
	)		const

overridevirtual

Determine if a step from solution x0 to solution x1 is allowed.

Parameters

x0	Current solution
x1	Proposed next solution

Returns: True if the step is allowed

Reimplemented from polyfem::solver::Form.

Definition at line 173 of file InversionBarrierForm.cpp.

References dim_, element_volume(), elements_, rest_positions_, polyfem::utils::unflatten(), and V.

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◆ name()

std::string polyfem::solver::InversionBarrierForm::name ( ) const

inlineoverridevirtual

Implements polyfem::solver::Form.

Definition at line 16 of file InversionBarrierForm.hpp.

◆ second_derivative_unweighted()

void polyfem::solver::InversionBarrierForm::second_derivative_unweighted	(	const Eigen::VectorXd &	x,
		StiffnessMatrix &	hessian
	)		const

overrideprotectedvirtual

Compute the second derivative of the value wrt x.

Parameters

[in]	x	Current solution
[out]	hessian	Output Hessian of the value wrt x

Implements polyfem::solver::Form.

Definition at line 72 of file InversionBarrierForm.cpp.

References polyfem::utils::create_thread_storage(), dim_, elements_, polyfem::utils::maybe_parallel_for(), rest_positions_, polyfem::utils::unflatten(), V, vhat_, and x.

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◆ value_unweighted()

double polyfem::solver::InversionBarrierForm::value_unweighted ( const Eigen::VectorXd & x ) const

overrideprotectedvirtual

Compute the value of the form.

Parameters

x	Current solution

Returns: Computed value

Implements polyfem::solver::Form.

Definition at line 20 of file InversionBarrierForm.cpp.

References dim_, elements_, polyfem::utils::maybe_parallel_for(), rest_positions_, polyfem::utils::unflatten(), V, vhat_, and x.

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Member Data Documentation

◆ dim_

int polyfem::solver::InversionBarrierForm::dim_

private

Definition at line 49 of file InversionBarrierForm.hpp.

Referenced by first_derivative_unweighted(), is_step_valid(), second_derivative_unweighted(), and value_unweighted().

◆ elements_

Eigen::MatrixXi polyfem::solver::InversionBarrierForm::elements_

private

Definition at line 48 of file InversionBarrierForm.hpp.

Referenced by first_derivative_unweighted(), is_step_valid(), second_derivative_unweighted(), and value_unweighted().

◆ rest_positions_

Eigen::MatrixXd polyfem::solver::InversionBarrierForm::rest_positions_

private

Definition at line 47 of file InversionBarrierForm.hpp.

Referenced by first_derivative_unweighted(), is_step_valid(), second_derivative_unweighted(), and value_unweighted().

◆ vhat_

double polyfem::solver::InversionBarrierForm::vhat_

private

Definition at line 50 of file InversionBarrierForm.hpp.

Referenced by first_derivative_unweighted(), second_derivative_unweighted(), and value_unweighted().

The documentation for this class was generated from the following files:

src/polyfem/solver/forms/InversionBarrierForm.hpp
src/polyfem/solver/forms/InversionBarrierForm.cpp

Public Member Functions

Protected Member Functions

Static Protected Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ InversionBarrierForm()

Member Function Documentation

◆ element_volume()

◆ element_volume_gradient()

◆ element_volume_hessian()

◆ first_derivative_unweighted()

◆ is_step_valid()

◆ name()

◆ second_derivative_unweighted()

◆ value_unweighted()

Member Data Documentation

◆ dim_

◆ elements_

◆ rest_positions_

◆ vhat_