Edge Class Reference

Class representing the edge of a polygon. More...

#include <Edge.h>

Inheritance diagram for Edge:

Collaboration diagram for Edge:

Public Member Functions
	Edge (int, int, const Vec3 &, const Vec3 &)
	Edge (int, int, const Vec3 &, const Vec3 &, Triangle *)
	Edge (int, int, const Vec3 &, const Vec3 &, Triangle *, Triangle *)
bool	isValidContact (const Vec3 &) const
Vec3	getBoundingBoxMin () const
Vec3	getBoundingBoxMax () const
Vec3	getDirectionFromPoint (const Vec3 &) const
void	moveNode (int, const Vec3 &)
void	move (const Vec3 &)
void	applyForce (const Vec3 &f)
pair< int, int >	getIDs () const
Public Member Functions inherited from AEdge
	AEdge (const Vec3 &, const Vec3 &)
virtual	~AEdge ()
double	sep (const Vec3 &) const
pair< bool, double >	dist (const Vec3 &) const
Vec3	getBoundingBoxMin () const
Vec3	getBoundingBoxMax () const

Private Attributes
Triangle *	m_t1
Triangle *	m_t2
int	m_id1
int	m_id2

Friends
ostream &	operator<< (ostream &, const Edge &)

Additional Inherited Members
Protected Attributes inherited from AEdge
Vec3	m_p0
Vec3	m_p1

Detailed Description

Class representing the edge of a polygon.

Author

Steffen Abe $Revision$ $Date$

Constructor & Destructor Documentation

Edge() [1/3]

Edge::Edge	(	int	id1,
		int	id2,
		const Vec3 &	p1,
		const Vec3 &	p2
	)

Construct edge from 2 points. Set triangle pointers to NULL

Parameters

id1	the id of p1
id2	the id of p2
p1
p2

References m_id1, m_id2, m_t1, m_t2, and NULL.

Edge() [2/3]

Edge::Edge	(	int	id1,
		int	id2,
		const Vec3 &	p1,
		const Vec3 &	p2,
		Triangle *	t1
	)

Construct edge from 2 points and 1 triangle pointer. Set other triangle pointer to NULL

Parameters

id1	the id of p1
id2	the id of p2
p1
p2
t1

References m_id1, m_id2, m_t1, m_t2, and NULL.

Edge() [3/3]

Edge::Edge	(	int	id1,
		int	id2,
		const Vec3 &	p1,
		const Vec3 &	p2,
		Triangle *	t1,
		Triangle *	t2
	)

Construct edge from 2 points and 2 triangle pointers.

Parameters

id1	the id of p1
id2	the id of p2
p1
p2
t1
t2

References m_id1, m_id2, m_t1, and m_t2.

Member Function Documentation

applyForce()

void Edge::applyForce

(

const Vec3 &

f

)

References Triangle::applyForce(), m_t1, m_t2, and NULL.

Referenced by EEdgeInteraction::calcForces().

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getBoundingBoxMax()

Vec3 Edge::getBoundingBoxMax

(

)

const

Get min. corner of axis-aligned bounding box.

References cmax(), AEdge::m_p0, and AEdge::m_p1.

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getBoundingBoxMin()

Vec3 Edge::getBoundingBoxMin

(

)

const

Get min. corner of axis-aligned bounding box.

References cmin(), AEdge::m_p0, and AEdge::m_p1.

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getDirectionFromPoint()

Vec3 Edge::getDirectionFromPoint

(

const Vec3 &

p

)

const

get unit direction vector between a point and the closest point along the supporting line of the edge (pointing away from the edge).

Parameters

p

the point

Warning

does not check if the closest point is actually within the edge or that the point is not on the line (potential div by 0)

References AEdge::m_p0, AEdge::m_p1, and Vec3::unit().

Referenced by EEdgeInteraction::calcForces().

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getIDs()

pair<int,int> Edge::getIDs ( ) const

inline

References m_id1, and m_id2.

isValidContact()

bool Edge::isValidContact

(

const Vec3 &

P

)

const

Check if any of the adjacent triangles (if there are any) has contact, i.e the perpendicular line from the supporting plane to the point hits the triangle, an thus makes the edge contact invalid

Parameters

P

the point

References Triangle::dist(), m_t1, m_t2, and NULL.

Referenced by EEdgeInteraction::calcForces().

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move()

void Edge::move

(

const Vec3 &

d

)

Translate whole edge

Parameters

d	the amount of movement

References AEdge::m_p0, and AEdge::m_p1.

moveNode()

void Edge::moveNode	(	int	id,
		const Vec3 &	d
	)

Move one of the corners. The identifier for the corner is the global node id. If the edge doesn't contain the node with the id , do nothing.

Parameters

id	the global id of the node to be moved
d	the amount of movement

References m_id1, m_id2, AEdge::m_p0, and AEdge::m_p1.

Friends And Related Function Documentation

operator<<

ostream& operator<< ( ostream &  ost, const Edge &  E  )

friend

output Edge to ostream

Member Data Documentation

m_id1

int Edge::m_id1

private

Referenced by Edge(), getIDs(), and moveNode().

m_id2

int Edge::m_id2

private

Referenced by Edge(), getIDs(), and moveNode().

m_t1

Triangle* Edge::m_t1

private

Referenced by applyForce(), Edge(), isValidContact(), and operator<<().

m_t2

Triangle * Edge::m_t2

private

Referenced by applyForce(), Edge(), isValidContact(), and operator<<().

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

• Geometry/Edge.h
• Geometry/Edge.cpp