Scroll to navigation

QwtClipper(3) Qwt User's Guide QwtClipper(3)

NAME

QwtClipper -
Some clipping algos.
 

SYNOPSIS

#include <qwt_clipper.h>

Static Public Member Functions


static QPolygon clipPolygon (const QRect &, const QPolygon &, bool closePolygon=false)
 
static QPolygonF clipPolygonF (const QRectF &, const QPolygonF &, bool closePolygon=false)
 
static QVector< QwtInterval > clipCircle (const QRectF &, const QPointF &, double radius)
 

Detailed Description

Some clipping algos.

Member Function Documentation

QVector< QwtInterval > QwtClipper::clipCircle (const QRectF &clipRect, const QPointF &center, doubleradius) [static] Circle clipping

clipCircle() devides a circle into intervals of angles representing arcs of the circle. When the circle is completely inside the clip rectangle an interval [0.0, 2 * M_PI] is returned.
Parameters:
clipRect Clip rectangle
 
center Center of the circle
 
radius Radius of the circle
Returns:
Arcs of the circle
 

QPolygon QwtClipper::clipPolygon (const QRect &clipRect, const QPolygon &polygon, boolclosePolygon = false) [static] Sutherland-Hodgman polygon clipping

Parameters:
clipRect Clip rectangle
 
polygon Polygon
 
closePolygon True, when the polygon is closed
Returns:
Clipped polygon
 

QPolygonF QwtClipper::clipPolygonF (const QRectF &clipRect, const QPolygonF &polygon, boolclosePolygon = false) [static] Sutherland-Hodgman polygon clipping

Parameters:
clipRect Clip rectangle
 
polygon Polygon
 
closePolygon True, when the polygon is closed
Returns:
Clipped polygon
 
 

Author

Generated automatically by Doxygen for Qwt User's Guide from the source code.
Fri Apr 15 2011 Version 6.0.0