Math::sphere Class Reference

#include <sphere.h>

Detailed Description

A 3-dimensional sphere.

Copyright

(C) 2004 RadonLabs GmbH (C) 2013-2020 Individual contributors, see AUTHORS file

Public Member Functions
	sphere ()
	default constructor
	sphere (const point &_p, scalar _r)
	pos/radius constructor
	sphere (scalar _x, scalar _y, scalar _z, scalar _r)
	x,y,z,r constructor
	sphere (const sphere &rhs)
	copy constructor
void	set (const point &_p, scalar _r)
	set position and radius
void	set (scalar _x, scalar _y, scalar _z, scalar _r)
	set x,y,z, radius
bool	inside (const bbox &box) const
	return true if box is completely inside sphere
bool	intersects (const sphere &s) const
	check if 2 spheres overlap
bool	intersects (const bbox &box) const
	check if sphere intersects box
bool	intersects_ray (const line &l) const
	check if sphere intersects ray
bool	intersect_sweep (const vector &va, const sphere &sb, const vector &vb, scalar &u0, scalar &u1) const
	check if 2 moving sphere have contact
rectangle< scalar >	project_screen_rh (const mat4 &modelView, const mat4 &projection, scalar nearZ) const
	project sphere to screen rectangle (right handed coordinate system)
ClipStatus::Type	clipstatus (const bbox &box) const
	get clip status of box against sphere

Static Public Member Functions
static vec3	random_point_on_unit_sphere ()
	generate a random point on a unit sphere

Public Attributes
point	p
scalar	r

Constructor & Destructor Documentation

sphere() [1/4]

Math::sphere::sphere ( )

inline

default constructor

sphere() [2/4]

Math::sphere::sphere ( const point & _p, scalar _r )

inline

pos/radius constructor

sphere() [3/4]

Math::sphere::sphere ( scalar _x, scalar _y, scalar _z, scalar _r )

inline

x,y,z,r constructor

sphere() [4/4]

Math::sphere::sphere ( const sphere & rhs )

inline

copy constructor

Member Function Documentation

clipstatus()

ClipStatus::Type Math::sphere::clipstatus ( const bbox & box ) const

inline

get clip status of box against sphere

Get the clip status of a box against this sphere.

Inside means: the box is completely inside the sphere.

inside()

bool Math::sphere::inside ( const bbox & box ) const

inline

return true if box is completely inside sphere

Return true if the bounding box is inside the sphere.

intersect_sweep()

bool Math::sphere::intersect_sweep	(	const vector &	va,
		const sphere &	sb,
		const vector &	vb,
		scalar &	u0,
		scalar &	u1 ) const

check if 2 moving sphere have contact

Check if 2 moving spheres have contact.

Taken from "Simple Intersection Tests For Games" article in Gamasutra, Oct 18 1999

Parameters

va	[in] distance travelled by 'this'
sb	[in] the other sphere
vb	[in] distance travelled by sb
u0	[out] normalized intro contact
u1	[out] normalized outro contact

intersects() [1/2]

bool Math::sphere::intersects

(

const bbox &

box

)

const

check if sphere intersects box

Check if sphere intersects with box.

Taken from "Simple Intersection Tests For Games", Gamasutra, Oct 18 1999

intersects() [2/2]

bool Math::sphere::intersects ( const sphere & s ) const

inline

check if 2 spheres overlap

intersects_ray()

bool Math::sphere::intersects_ray

(

const line &

l

)

const

check if sphere intersects ray

project_screen_rh()

rectangle< scalar > Math::sphere::project_screen_rh	(	const mat4 &	view,
		const mat4 &	projection,
		scalar	nearZ ) const

project sphere to screen rectangle (right handed coordinate system)

Project the sphere (defined in global space) to a screen space rectangle, given the current View and Projection matrices.

The method assumes that the sphere is at least partially visible.

random_point_on_unit_sphere()

vec3 Math::sphere::random_point_on_unit_sphere ( )

static

generate a random point on a unit sphere

set() [1/2]

void Math::sphere::set ( const point & _p, scalar _r )

inline

set position and radius

set() [2/2]

void Math::sphere::set ( scalar _x, scalar _y, scalar _z, scalar _r )

inline

set x,y,z, radius

Member Data Documentation

p

point Math::sphere::p

r

scalar Math::sphere::r

---

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

• /github/workspace/code/foundation/math/sphere.h
• /github/workspace/code/foundation/math/sphere.cc