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RedHat 9 (Linux i386) - man page for qcanvasspline (redhat section 3qt)

QCanvasSpline(3qt)							       QCanvasSpline(3qt)

       QCanvasSpline - Multi-bezier splines on a QCanvas

       #include <qcanvas.h>

       Inherits QCanvasPolygon.

   Public Members
       QCanvasSpline ( QCanvas * canvas )
       ~QCanvasSpline ()
       void setControlPoints ( QPointArray ctrl, bool close = TRUE )
       QPointArray controlPoints () const
       bool closed () const
       virtual int rtti () const

       The QCanvasSpline class provides multi-bezier splines on a QCanvas.

       A QCanvasSpline is a sequence of 4-point bezier curves joined together to make a curved

       You set the control points of the spline with setControlPoints().

       If the bezier is closed(), then the first control point will be re-used as the last
       control point. Therefore, a closed bezier must have a multiple of 3 control points and an
       open bezier must have one extra point.

       The beziers are not necessarily joined "smoothly". To ensure this, set control points
       appropriately (general reference texts about beziers will explain this in detail).

       Like any other canvas item splines can be moved with QCanvasItem::move() and
       QCanvasItem::moveBy(), or by setting coordinates with QCanvasItem::setX(),
       QCanvasItem::setY() and QCanvasItem::setZ().

       See also Graphics Classes and Image Processing Classes.

QCanvasSpline::QCanvasSpline ( QCanvas * canvas )
       Create a spline with no control points on the canvas canvas.

       See also setControlPoints().

QCanvasSpline::~QCanvasSpline ()
       Destroy the spline.

bool QCanvasSpline::closed () const
       Returns TRUE if the control points are a closed set; otherwise returns FALSE.

QPointArray QCanvasSpline::controlPoints () const
       Returns the current set of control points.

       See also setControlPoints() and closed().

int QCanvasSpline::rtti () const [virtual]
       Returns 8 (QCanvasItem::Rtti_Spline).

       See also QCanvasItem::rtti().

       Reimplemented from QCanvasPolygon.

void QCanvasSpline::setControlPoints ( QPointArray ctrl, bool close = TRUE )
       Set the spline control points to ctrl.

       If close is TRUE, then the first point in ctrl will be re-used as the last point, and the
       number of control points must be a multiple of 3. If close is FALSE, one additional
       control point is required, and the number of control points must be one of (4, 7, 10, 13,

       If the number of control points doesn't meet the above conditions, the number of points
       will be truncated to the largest number of points that do meet the requirement.

       Example: canvas/canvas.cpp.

       http://doc.trolltech.com/qcanvasspline.html http://www.trolltech.com/faq/tech.html

       Copyright 1992-2001 Trolltech AS, http://www.trolltech.com.  See the license file included
       in the distribution for a complete license statement.

       Generated automatically from the source code.

       If you find a bug in Qt, please report it as described in
       http://doc.trolltech.com/bughowto.html.	Good bug reports help us to help you. Thank you.

       The definitive Qt documentation is provided in HTML format; it is located at
       $QTDIR/doc/html and can be read using Qt Assistant or with a web browser. This man page is
       provided as a convenience for those users who prefer man pages, although this format is
       not officially supported by Trolltech.

       If you find errors in this manual page, please report them to qt-bugs@trolltech.com.
       Please include the name of the manual page (qcanvasspline.3qt) and the Qt version (3.1.1).

Trolltech AS				 9 December 2002		       QCanvasSpline(3qt)

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