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Ellipse2dC::Ellipse2dC(void) Ellipse2dC::Ellipse2dC(const Point2dSArray1dC &) Ellipse2dC::Fit(const Point2dSArray1dC &) Ellipse2dC::Centre(void) const Ellipse2dC::Size(void) const Ellipse2dC::Rotation(void) const Ellipse2dC::Angle(void) const Ellipse2dC::Value(RealT) const Ellipse2dC::Angle(Point2dC) const Ellipse2dC::Projection(const Point2dC &) const Ellipse2dC::Distance(const Point2dC &) const

Ellipse2dC
An ellipse in 2-D Space.
include	"amma/Ellipse.hh"
User Level:	Default
Library:	Magm
Example:	exMat2d.cc
Section:	Geometry.2-D
In Scope:	std

Comments:
This is AnGeoMix instead of AnGeo2 because of its dependance on 3d matrix.

Ellipse2dC()

Default constructor, unit circle.

Ellipse2dC(const Point2dSArray1dC & Pnts)

Create an ellipse from an array of points.

RealT Fit(const Point2dSArray1dC & Pnts)

Fit an ellipse to a set of points.

Point2dC Centre() const

Constant access to centre of circle.

Vector2dC Size() const

Get the size of ellipse, Major axis in X, and minor axis in Y.

Matrix2d2C Rotation() const

Get the rotation matrix.

RealT Angle() const

Get major axis of ellipse.

Point2dC Value(RealT Angle) const

Parametric place on ellipse.

RealT Angle(Point2dC Pnt) const

Angle to point.

Point2dC Projection(const Point2dC & Pnt) const

return the closest point on the ellipse to Pnt. NB. !!!!!! APPROXIMATION ONLY !!!!!!!!

RealT Distance(const Point2dC & p) const

Distance to closest point on perimeter. NB. !!!!!! APPROXIMATION ONLY !!!!!!!!