Sphere Class Reference

#include <Sphere.h>

Inherits Primitive.

Inheritance diagram for Sphere:

[legend]Collaboration diagram for Sphere:

[legend]List of all members.

Public Member Functions
	Sphere (const Vec3f &center, float radius)
virtual	~Sphere ()
bool	intersect (Ray &ray) const
Vec3f	normal (const Ray &ray) const
virtual TexCoordinate	texCoord (const Ray &ray) const
void	axes (const Ray &ray, Vec3f &x, Vec3f &y) const
Protected Member Functions
void	calcBounds ()
Protected Attributes
Vec3f	mCenter
	Position of sphere center.
float	mRadius

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Detailed Description

Represents a sphere

Author:

Alex Busenius

Christian Engels

Definition at line 15 of file Sphere.h.

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Constructor & Destructor Documentation

Sphere::Sphere	(	const Vec3f &	center,
		float	radius
	)			[inline]

Init constructor

Parameters:

	center	Position of the sphere center
	radius	Sphere radius

Definition at line 23 of file Sphere.h.

References calcBounds().

virtual Sphere::~Sphere

(

)

[inline, virtual]

Definition at line 31 of file Sphere.h.

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Member Function Documentation

bool Sphere::intersect

(

Ray &

ray

)

const [inline, virtual]

Intersects the ray. And sets ray.hit and ray.t to the appropiate values

Returns:

true if something hit, false if not

Implements Primitive.

Definition at line 38 of file Sphere.h.

References Ray::dir(), Vec3f::dot(), EPSILON, Ray::hitPoint(), mCenter, mRadius, Ray::org(), Ray::setHit(), Ray::setUV(), Ray::t(), Vec3f::x(), Vec3f::y(), and Vec3f::z().

Referenced by SphereObject::doIntersect().

Vec3f Sphere::normal

(

const Ray &

ray

)

const [inline, virtual]

Calculate a normal in global coordinates given barycentric coordinates of the hitpoint

Returns:

the normal of the ray with the apropiate position

Implements Primitive.

Definition at line 84 of file Sphere.h.

References Ray::hit(), Vec3f::normal(), Ray::obj(), PhysicalObject::toGlobalCoordinates(), Ray::u(), and Ray::v().

Referenced by axes().

virtual TexCoordinate Sphere::texCoord

(

const Ray &

ray

)

const [inline, virtual]

Returns:

the Texture Coordinate

Reimplemented from Primitive.

Definition at line 99 of file Sphere.h.

References Ray::u(), and Ray::v().

void Sphere::axes	(	const Ray &	ray,
		Vec3f &	x,
		Vec3f &	y
	)			const [inline, virtual]

gives axis of the triangle (perpenticular to the normal) this is used in bump mapping

See also:

Shader::normal()

Implements Primitive.

Definition at line 107 of file Sphere.h.

References Vec3f::cross(), EPSILON, Ray::hit(), Vec3f::normal(), normal(), Ray::obj(), Vec3f::setX(), Vec3f::x(), Vec3f::y(), and Vec3f::z().

void Sphere::calcBounds

(

)

[inline, protected, virtual]

Calculate sphere bounds

Implements Primitive.

Definition at line 141 of file Sphere.h.

References Box::extend(), Primitive::mBounds, mCenter, and mRadius.

Referenced by Sphere().

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Member Data Documentation

Vec3f Sphere::mCenter [protected]

Position of sphere center.

Definition at line 133 of file Sphere.h.

Referenced by calcBounds(), and intersect().

float Sphere::mRadius [protected]

Definition at line 136 of file Sphere.h.

Referenced by calcBounds(), and intersect().

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

• src/Sphere.h

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