geom::CircularArc3< T > Class Template Reference

A circular arc in 3-dimensional space. More...

#include <CircularArc3.h>

List of all members.

Public Types
typedef T	Number
	The number type.
typedef ads::FixedArray< 3, Number >	Point
	The representation of a point.
Public Member Functions
Constructors etc.
	CircularArc3 ()
	Default constructor. Uninitialized memory.
	CircularArc3 (const Point &center, const Point &source, const Point &target)
	Construct from the center, the source, and the target.
	CircularArc3 (const CircularArc3 &other)
	Copy constructor.
CircularArc3 &	operator= (const CircularArc3 &other)
	Assignment operator.
	~CircularArc3 ()
	Trivial destructor.
void	make (const Point &center, const Point &source, const Point &target)
	Make from the center, the source, and the target.
Accesors.
const Circle &	getCircle () const
	Return the circle.
const Point &	getCenter () const
	Return the center.
Number	getRadius () const
	Return the radius.
const Point &	getFirstAxis () const
	Return the first axis.
const Point &	getSecondAxis () const
	Return the second axis.
Number	getAngle () const
	Return the angle.
Functor.
Point	operator() (const Number t) const
	Evaluate a point on the circular arc.
Translations.
CircularArc3 &	operator+= (const Point &x)
	Translate by p.
CircularArc3 &	operator-= (const Point &x)
	Translate by -p.
Validity.
bool	isValid () const
	Return true if the circular arc is valid.
Related Functions
(Note that these are not member functions.)
bool	operator== (const CircularArc3< T > &x, const CircularArc3< T > &y)
	Return true if the balls are equal.
bool	operator!= (const CircularArc3< T > &x, const CircularArc3< T > &y)
	Return true if the balls are not equal.
CircularArc3< T >	operator+ (const CircularArc3< T > &circularArc, const typename CircularArc3< T >::Point &vector)
	Return a circular arc translated by the vector.
CircularArc3< T >	operator- (const CircularArc3< T > &circularArc, const typename CircularArc3< T >::Point &vector)
	Return a circular arc translated by the negative of the vector.
std::istream &	operator>> (std::istream &in, CircularArc3< T > &x)
	Read a circular arc.
std::ostream &	operator<< (std::ostream &out, const CircularArc3< T > &x)
	Write the circular arc.

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Detailed Description

template<typename T = double>
class geom::CircularArc3< T >

A circular arc in 3-dimensional space.

Parameters:

T

is the number type. By default it is double.

A circular arc in 3-D is defined by a circle (acenter, a normal, and a radius), two vectors which form axes in the plane of the circle and an angle. The parametrization for t in [0..1] is:

x = center + radius * (axis0 * cos(angle * t) + axis1 * sin(angle * t))

Thus the circular arc lies on the circle. It starts at the first axis and goes in the positive direction toward the second axis through the defined angle.

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Member Function Documentation

template<typename T = double>

Point geom::CircularArc3< T >::operator()

(

const Number

t

)

const [inline]

Evaluate a point on the circular arc.

The arc is parametrized with .

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

• CircularArc3.h

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