CoreComponents 3.0.0
A Modern C++ Toolkit
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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.
 
PathlineTo (Point b)
 Add a line segment to point b.
 
PathcurveTo (Point b, Point c, Point d)
 Add a cubic Bézier spline spanning over control points b, c and ending at point d.
 
PatharcAround (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.
 
template<class T >
bool is () const
 Check if this object is of type T.
 
template<class 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.
 
long useCount () const
 Reference count.
 

Protected Member Functions

State & me ()
 
const State & me () const
 
- Protected Member Functions inherited from Object
template<class 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)
 
Objectoperator= (std::nullptr_t)
 

Additional Inherited Members

- 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< Stateme
 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.