madness::SDFCylinder Class Reference

A cylinder (3 dimensions) More...

#include <sdf_shape_3D.h>

Inheritance diagram for madness::SDFCylinder:

Collaboration diagram for madness::SDFCylinder:

Public Member Functions
	SDFCylinder (const double radius, const double length, const coord_3d &axpt, const coord_3d &axis)
	Constructor for cylinder.
coord_3d	grad_sdf (const coord_3d &pt) const
double	sdf (const coord_3d &pt) const
	Computes the normal distance.
Public Member Functions inherited from madness::SignedDFInterface< 3 >
virtual	~SignedDFInterface ()
virtual Vector< double, NDIM >	grad_sdf (const Vector< double, NDIM > &x) const=0
	Returns the gradient of the signed distance from the surface (i.e., dsdf(x)/dx[i] )
virtual double	sdf (const Vector< double, NDIM > &x) const=0
	Returns the signed distance from the surface,.

Protected Attributes
double	a
	half the length of the cylinder
coord_3d	axis
	the axial direction of the cylinder
coord_3d	center
	the central axial point of the cylinder (distance a from both ends)
double	radius
	the radius of the cylinder

Detailed Description

A cylinder (3 dimensions)

Constructor & Destructor Documentation

SDFCylinder()

madness::SDFCylinder::SDFCylinder ( const double  radius, const double  length, const coord_3d &  axpt, const coord_3d &  axis  )

inline

Constructor for cylinder.

Parameters

radius	The radius of the cylinder
length	The length of the cylinder
axpt	The central axial point of the cylinder (equidistant from both ends)
axis	The axial direction of the cylinder

Member Function Documentation

grad_sdf()

coord_3d madness::SDFCylinder::grad_sdf ( const coord_3d &  pt ) const

inline

Computes the gradient of the SDF.

Parameters

pt	Point at which to compute the gradient

Returns

the gradient

References MADNESS_EXCEPTION.

sdf()

double madness::SDFCylinder::sdf ( const coord_3d &  pt ) const

inline

Computes the normal distance.

This SDF naively uses contours, and should be improved before serious usage.

Parameters

pt	Point at which to compute the distance from the surface

Returns

The signed distance from the surface

References a, axis, center, dist(), madness::nonlinear_vector_solver(), and radius.

Member Data Documentation

a

double madness::SDFCylinder::a

protected

half the length of the cylinder

Referenced by sdf().

axis

coord_3d madness::SDFCylinder::axis

protected

the axial direction of the cylinder

Referenced by sdf().

center

coord_3d madness::SDFCylinder::center

protected

the central axial point of the cylinder (distance a from both ends)

Referenced by sdf().

radius

double madness::SDFCylinder::radius

protected

the radius of the cylinder

Referenced by sdf().

---

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

• sdf_shape_3D.h