Path Class Reference

A painter path. More...

#include <cc/Path>

Inheritance diagram for Path:

Public Member Functions
	Path ()
	Create a null path.
	Path (const Point &o)
	Create a path starting at point o.
Point	startPoint () const
	Starting point of the path.
Point	currentPoint () const
	The current point.
Path &	lineTo (Point b)
	Add a line segment to point b.
Path &	curveTo (Point b, Point c, Point d)
	Add a cubic Bézier spline spanning over control points b, c and ending at point d.
Path &	arcAround (Point b, double alpha)
	Add an arc that starts at the current point and circles around point b alpha radians (-2*pi to +2*pi).
List< Segment >	segments () const
	Get the list of all path segments.
Public Member Functions inherited from Object
	Object ()=default
	Create a null object.
	operator bool () const
	Check if this is a non-null object.
bool	isNull () const
	Check if this is a null object.
int	useCount () const
	Reference count.
template<class T>
bool	is () const
	Check if this object is of type T.
template<class T>
T	as () const
	Cast this object to type T.
bool	isWeak () const
	Check if the underlying object reference is weak.
bool	operator== (const Object &other) const
	Equality operator.
std::strong_ordering	operator<=> (const Object &other) const
	Ordering operator.

Protected Member Functions
State &	me ()
const State &	me () const
Protected Member Functions inherited from Object
template<class T>
T	weak () const
template<class T>
void	initOnce ()
	Create the object state when called the first time.
template<class T>
void	initOncePerThread ()
	Create a distinct object state for each thread when called the first time in that thread.
	Object (State *newState)
	Initialize object with newState.
	Object (State *state, Alias)
	Object (State *state, Weak)
Object &	operator= (std::nullptr_t)

Additional Inherited Members
Public Types inherited from Object
using	NullAccess = cc::NullAccess
	Error thrown when trying to access a null object.
using	VirginityTestFailed = cc::VirginityTestFailed
	Error thrown when trying to initialize an object with a non-virgin state.
Static Protected Member Functions inherited from Object
template<class T>
static T	alias (const State *state)
	Create an alias object for the given state.
template<class T>
static T	weak (const State *state)
Protected Attributes inherited from Object
Handle< State >	me
	Internal object state

Detailed Description

A painter path.

See also

Painter

Todo

Test/debug Path::arcAround()

API doc strings for the Segment classes

Constructor & Destructor Documentation

Path() [1/2]

Path

(

)

Create a null path.

Path() [2/2]

Path ( const Point & o )

explicit

Create a path starting at point o.

Member Function Documentation

startPoint()

Point startPoint

(

)

const

Starting point of the path.

currentPoint()

Point currentPoint

(

)

const

The current point.

lineTo()

Path & lineTo

(

Point

b

)

Add a line segment to point b.

curveTo()

Path & curveTo	(	Point	b,
		Point	c,
		Point	d )

Add a cubic Bézier spline spanning over control points b, c and ending at point d.

arcAround()

Path & arcAround	(	Point	b,
		double	alpha )

Add an arc that starts at the current point and circles around point b alpha radians (-2*pi to +2*pi).

segments()

List< Segment > segments

(

)

const

Get the list of all path segments.