G3D::Triangle Class Reference

A generic triangle representation. More...

Public Member Functions
	Triangle (class BinaryInput &b)
	Triangle ()
	Triangle (const Point3 &v0, const Point3 &v1, const Point3 &v2)
	~Triangle ()
float	area () const
Vector3	barycentric (const Point3 &P) const
	result[i] is the weight applied to vertex(i) when blending More...
Point3	center () const
	Barycenter. More...
void	deserialize (class BinaryInput &b)
const Vector3 &	edge01 () const
	vertex[1] - vertex[0] More...
const Vector3 &	edge02 () const
	vertex[2] - vertex[0] More...
void	getBounds (class AABox &) const
void	getRandomSurfacePoint (Point3 &P, Vector3 &N=Vector3::ignore, Random &rnd=Random::common()) const
size_t	hashCode () const
bool	intersect (const class Ray &ray, float &distance, float baryCoord[3]) const
	Intersect the ray at distance less than distance. More...
const Vector3 &	normal () const
bool	operator== (const Triangle &other) const
	For two triangles to be equal they must have the same vertices in the same order. More...
Triangle	otherSide () const
	Invert winding. More...
const Plane &	plane () const
Vector3::Axis	primaryAxis () const
Point3	randomPoint (Random &rnd=Random::common()) const
	Returns a random point in the triangle. More...
void	serialize (class BinaryOutput &b)
const Point3 &	vertex (int n) const
	0, 1, or 2 More...

Friends
class	CollisionDetection
class	Ray

Detailed Description

A generic triangle representation.

This should not be used as the underlying triangle for creating models; it is intended for providing fast property queries but requires a lot of storage and is mostly immutable.

Constructor & Destructor Documentation

Triangle() [1/3]

G3D::Triangle::Triangle ( class BinaryInput &  b )

explicit

Triangle() [2/3]

G3D::Triangle::Triangle

(

)

Referenced by otherSide().

Triangle() [3/3]

G3D::Triangle::Triangle	(	const Point3 &	v0,
		const Point3 &	v1,
		const Point3 &	v2
	)

~Triangle()

G3D::Triangle::~Triangle

(

)

Member Function Documentation

area()

float G3D::Triangle::area

(

)

const

Referenced by G3D::TriangleShape::area().

barycentric()

Vector3 G3D::Triangle::barycentric

(

const Point3 &

P

)

const

result[i] is the weight applied to vertex(i) when blending

center()

Point3 G3D::Triangle::center

(

)

const

Barycenter.

Referenced by G3D::TriangleShape::center().

deserialize()

void G3D::Triangle::deserialize

(

class BinaryInput &

b

)

edge01()

const Vector3& G3D::Triangle::edge01 ( ) const

inline

vertex[1] - vertex[0]

Referenced by G3D::Ray::intersectionTime(), and G3D::PrecomputedRay::intersectionTime().

edge02()

const Vector3& G3D::Triangle::edge02 ( ) const

inline

vertex[2] - vertex[0]

Referenced by G3D::Ray::intersectionTime(), and G3D::PrecomputedRay::intersectionTime().

getBounds()

void G3D::Triangle::getBounds

(

class AABox &

)

const

Referenced by G3D::TriangleShape::boundingAABox(), BoundsTrait< class G3D::Triangle * >::getBounds(), and BoundsTrait< class G3D::Triangle >::getBounds().

getRandomSurfacePoint()

void G3D::Triangle::getRandomSurfacePoint ( Point3 &  P, Vector3 &  N = Vector3::ignore, Random &  rnd = Random::common()  ) const

inline

Referenced by G3D::TriangleShape::getRandomSurfacePoint().

hashCode()

size_t G3D::Triangle::hashCode ( ) const

inline

Referenced by HashTrait< G3D::Triangle >::hashCode().

intersect()

bool G3D::Triangle::intersect	(	const class Ray &	ray,
		float &	distance,
		float	baryCoord[3]
	)		const

Intersect the ray at distance less than distance.

Parameters

distance	Set to the maximum distance (can be G3D::inf()) to search for an intersection. On return, this is the smaller of the distance to the intersection, if one exists, and the original value.
baryCoord	If a triangle is hit before distance, a the barycentric coordinates of the hit location on the triangle. Otherwise, unmodified.

Returns

True if there was an intersection before the original distance.

normal()

const Vector3& G3D::Triangle::normal

(

)

const

Referenced by G3D::CollisionDetection::collisionTimeForMovingPointFixedTriangle(), and getRandomSurfacePoint().

operator==()

bool G3D::Triangle::operator== ( const Triangle &  other ) const

inline

For two triangles to be equal they must have the same vertices in the same order.

That is, vertex[0] == vertex[0], etc.

otherSide()

Triangle G3D::Triangle::otherSide ( ) const

inline

Invert winding.

plane()

const Plane& G3D::Triangle::plane

(

)

const

primaryAxis()

Vector3::Axis G3D::Triangle::primaryAxis ( ) const

inline

randomPoint()

Point3 G3D::Triangle::randomPoint

(

Random &

rnd = Random::common()

)

const

Returns a random point in the triangle.

Referenced by getRandomSurfacePoint(), and G3D::TriangleShape::randomInteriorPoint().

serialize()

void G3D::Triangle::serialize

(

class BinaryOutput &

b

)

vertex()

const Point3& G3D::Triangle::vertex ( int  n ) const

inline

0, 1, or 2

Referenced by G3D::CollisionDetection::collisionTimeForMovingPointFixedTriangle(), G3D::Ray::intersectionTime(), G3D::PrecomputedRay::intersectionTime(), and otherSide().

Friends And Related Function Documentation

CollisionDetection

friend class CollisionDetection

friend

Ray

friend class Ray

friend