` #include <Q3PointArray>`

**This class is part of the Qt 3 support library.** It is provided to keep old source code working. We strongly advise against using it in new code. See Porting to Qt 4 for more information.

**Inherits: **QPolygon.

Q3PointArray () | |

Q3PointArray ( const QRect & r, bool closed = false ) | |

Q3PointArray ( const QPolygon & other ) | |

Q3PointArray | copy () const |

Q3PointArray | cubicBezier () const |

bool | isNull () |

void | makeArc ( int x, int y, int w, int h, int a1, int a2 ) |

void | makeArc ( int x, int y, int w, int h, int a1, int a2, const QMatrix & xf ) |

void | makeEllipse ( int x, int y, int w, int h ) |

- 2 static public members inherited from QVector

The Q3PointArray class provides an array of points.

Q3PointArray is a QPolygon subclass that provides functions to make it more source compatible with the `QPointArray` class in Qt 3.

In Qt 4, we recommend that you use QPainterPath for representing arcs, ellipses, and Bezier curves, rather than QPolygon.

Constructs an empty Q3PointArray.

Constructs a point array from the rectangle *r*.

If *closed* is false, then the point array just contains the following four points of the rectangle ordered clockwise. The bottom-right point is located at (r.x() + r.width(), r.y() + r.height()).

Constructs a copy of *other*.

Returns a copy of this Q3PointArray.

Returns the Bezier points for the four control points in this array.

Returns isEmpty(). Use isEmpty() instead.

Sets the points of the array to those describing an arc of an ellipse with size, width *w* by height *h*, and position (*x*, *y*), starting from angle *a1* and spanning by angle *a2*. The resulting array has sufficient resolution for pixel accuracy (see the overloaded function which takes an additional QMatrix parameter).

Angles are specified in 16ths of a degree, i.e. a full circle equals 5760 (16*360). Positive values mean counter-clockwise, whereas negative values mean the clockwise direction. Zero degrees is at the 3 o'clock position.

This is an overloaded function.

Sets the points of the array to those describing an arc of an ellipse with width *w* and height *h* and position (*x*, *y*), starting from angle *a1*, and spanning angle by *a2*, and transformed by the matrix *xf*. The resulting array has sufficient resolution for pixel accuracy.

Angles are specified in 16ths of a degree, i.e. a full circle equals 5760 (16 * 360). Positive values mean counter-clockwise, whereas negative values mean the clockwise direction. Zero degrees is at the 3 o'clock position.

Sets the points of the array to those describing an ellipse with size, width *w* by height *h*, and position (*x*, *y*).

The returned array has sufficient resolution for use as pixels.