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M_SPHERE(3)		     Library Functions Manual		     M_SPHERE(3)

NAME
     M_Sphere -- Agar-Math sphere structure

SYNOPSIS
     #include <agar/core.h>
     #include <agar/gui.h>
     #include <agar/math/m.h>

DESCRIPTION
     The M_Sphere structure describes a sphere in terms of an origin point p and
     a radius r:

     typedef struct m_sphere {
	     M_Vector3 p;
	     M_Real r;
     } M_Sphere;

INITIALIZATION
     M_Sphere M_SphereFromPt(M_Vector p, M_Real r)

     M_Sphere M_SphereRead(AG_DataSource *ds)

     void M_SphereWrite(AG_DataSource *ds, M_Sphere *S)

     M_Sphere M_SPHERE_INITIALIZER(M_Real x, M_Real y, M_Real z, M_Real r)

     The M_SphereFromPt() function returns a M_Sphere describing a sphere of ra-
     dius r centered at point p.

     The  M_SphereRead()  and  M_SphereWrite()	functions read or write a sphere
     structure from/to an AG_DataSource(3).

     The M_SPHERE_INITIALIZER()  macro	expands  to  a	static	initializer  for
     M_Sphere.

COMPUTATIONS
     M_Real M_SpherePointDistance(M_Sphere S, M_Vector3 p)

     M_Real M_SphereSurfaceArea(M_Sphere S)

     M_Real M_SphereVolume(M_Sphere S)

     The M_SpherePointDistance() routine computes the minimal distance between a
     sphere S and a point p.

     M_SphereSurfaceArea() returns the surface area of the sphere.  M_SphereVol-
     ume() returns the volume of the interior of the sphere.

SEE ALSO
     AG_DataSource(3),	 AG_Intro(3),  M_Circle(3),  M_Geometry(3),  M_Plane(3),
     M_Polygon(3), M_Rectangle(3), M_Sphere(3), M_Triangle(3), M_Vector(3)

HISTORY
     The M_Sphere structure first appeared in Agar 1.3.4.

Agar 1.7			December 21, 2022		     M_SPHERE(3)

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<https://man.freebsd.org/cgi/man.cgi?query=M_Sphere&sektion=3&manpath=FreeBSD+Ports+15.1.quarterly>

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