# Sphere¶

class Sphere : public feasst::Shape

A sphere is given by a center point and a radius.

Public Functions

Sphere(const argtype &args, const Position center)

Parameters
• center: position of the center of the sphere in absolute coordinates.

args:

Sphere(const argtype &args)

Same as above, but the center is assumed to be the origin.

double nearest_distance(const Position &point) const

Return the distance from the point to the nearest point on the surface. The distance is negative if the point is inside of the shape and positive if it is outside.

double surface_area() const

Return the surface area (if implemented).

double volume() const

Return the volume (if implemented).

void surface_mesh(const int num, std::vector<Position> *points) const

Parameters
• num: The number of points.

Generate approximately equi-distance points on the surface using golden spiral methodology.