Barrier¶

class Barrier;¶

Inheritance diagram for ipc::Barrier:

Base class for barrier functions.

Subclassed by ipc::ClampedLogBarrier, ipc::ClampedLogSqBarrier, ipc::CubicBarrier

Public Functions¶

Barrier() = default;¶

virtual ~Barrier() = default;¶

virtual double operator()(const double d, const double dhat) const
    = 0;¶

Evaluate the barrier function.

Parameters:¶

const double d¶

Distance.

const double dhat¶

Activation distance of the barrier.

Returns:¶

The value of the barrier function at d.

virtual double first_derivative(
    const double d, const double dhat) const
    = 0;¶

Evaluate the first derivative of the barrier function wrt d.

Parameters:¶

const double d¶

Distance.

const double dhat¶

Activation distance of the barrier.

Returns:¶

The value of the first derivative of the barrier function at d.

virtual double second_derivative(
    const double d, const double dhat) const
    = 0;¶

Evaluate the second derivative of the barrier function wrt d.

Parameters:¶

const double d¶

Distance.

const double dhat¶

Activation distance of the barrier.

Returns:¶

The value of the second derivative of the barrier function at d.

virtual double units(const double dhat) const = 0;¶

Get the units of the barrier function.

Parameters:¶

const double dhat¶

The activation distance of the barrier.

Returns:¶

The units of the barrier function.