Face< 2, T > Class Template Reference

A 2-D face on a b-rep. More...

List of all members.

Public Types
typedef T	Number
	The number type.
typedef ads::FixedArray< 2, T >	Point
	A Cartesian point.
typedef geom::ScanConversionPolygon< Number >	Polygon
	A polygon.
Public Member Functions
Constructors, etc.
	Face ()
	Default constructor. Uninitialized data.
	Face (const Point &source, const Point &target, const Point &normal, int index)
	Construct from points, normal, and indices.
	Face (const Face &other)
	Copy constructor.
Face &	operator= (const Face &other)
	Assignment operator.
void	make (const Point &source, const Point &target, const Point &normal, int index)
	Make from points, the tangent and the normal.
	~Face ()
	Trivial destructor.
Accessors.
const Point &	getSource () const
const Point &	getTarget () const
Number	getLength () const
const Point &	getTangent () const
const Point &	getNormal () const
int	getFaceIndex () const
Mathematical operations.
Number	computeDistance (const Point &p) const
	Find the signed distance.
Number	computeDistanceChecked (const Point &p) const
	Compute distance with checking.
Number	computeDistanceUnsigned (const Point &p) const
	Return the unsigned distance to the face.
Number	computeDistanceUnsignedChecked (const Point &p) const
	Return the unsigned distance to the face.
Number	computeClosestPoint (const Point &p, Point *cp) const
	Find the signed distance and closest point.
Number	computeClosestPointChecked (const Point &p, Point *cp) const
	Find the signed distance and closest point.
Number	computeClosestPointUnsigned (const Point &p, Point *cp) const
	Find the unsigned distance and closest point.
Number	computeClosestPointUnsignedChecked (const Point &p, Point *cp) const
	Find the unsigned distance and closest point.
Number	computeGradient (const Point &p, Point *grad) const
	Find the signed distance and the gradient of the distance.
Number	computeGradientChecked (const Point &p, Point *grad) const
	Find the signed distance and the gradient of the distance.
Number	computeGradientUnsigned (const Point &p, Point *grad) const
	Find the unsigned distance and the gradient of this distance.
Number	computeGradientUnsignedChecked (const Point &p, Point *grad) const
	Find the unsigned distance and the gradient of this distance.
Number	computeClosestPointAndGradient (const Point &p, Point *cp, Point *grad) const
	Find the signed distance, closest point and gradient of the distance.
Number	computeClosestPointAndGradientChecked (const Point &p, Point *cp, Point *grad) const
	Find the signed distance, closest point and gradient of the distance.
Number	computeClosestPointAndGradientUnsigned (const Point &p, Point *cp, Point *grad) const
	Find the unsigned distance, closest point and gradient of this distance.
Number	computeClosestPointAndGradientUnsignedChecked (const Point &p, Point *cp, Point *grad) const
	Find the unsigned distance, closest point and gradient of this distance.
void	buildCharacteristicPolygon (Polygon *polygon, const Number height) const
	Make a polygon that contains the closest points with positive and negative distance.
void	buildCharacteristicPolygon (Polygon *polygon, const Face &prev, const Face &next, const Number height) const
	Make a clipped polygon that contains the closest points with either positive or negative distance.

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Detailed Description

template<typename T>
class Face< 2, T >

A 2-D face on a b-rep.

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Member Function Documentation

template<typename T>

void Face< 2, T >::buildCharacteristicPolygon	(	Polygon *	polygon,
		const Face< 2, T > &	prev,
		const Face< 2, T > &	next,
		const Number	height
	)			const [inline]

Make a clipped polygon that contains the closest points with either positive or negative distance.

Use the neighboring faces to clip the polygon. This routine enlarges the polygon in the tangential direction but not in the normal direction.

template<typename T>

void Face< 2, T >::buildCharacteristicPolygon	(	Polygon *	polygon,
		const Number	height
	)			const [inline]

Make a polygon that contains the closest points with positive and negative distance.

This routine enlarges the polygon in the tangential direction but not in the normal direction.

template<typename T>

Face< 2, T >::Number Face< 2, T >::computeDistanceChecked

(

const Point &

p

)

const [inline]

Compute distance with checking.

The points that are closest to the face lie in a strip. If the point, p, is within a distance, delta, of being inside the strip then return the distance. Otherwise return infinity.

template<typename T>

Number Face< 2, T >::computeDistanceUnsignedChecked

(

const Point &

p

)

const [inline]

Return the unsigned distance to the face.

The points that are closest to the face lie in a strip. If the point, p, is within a distance, delta, of being inside the strip then return the distance. Otherwise return infinity.

template<typename T>

void Face< 2, T >::make	(	const Point &	source,
		const Point &	target,
		const Point &	normal,
		int	index
	)			[inline]

Make from points, the tangent and the normal.

If you alread have a Face, this is more efficient than calling the constructor.

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

• Face2.ipp

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