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

NAME

QwtClipper -
Some clipping algos.
 

SYNOPSIS

#include <qwt_clipper.h>

Static Public Member Functions


static QwtArray< QwtDoubleInterval > clipCircle (const QwtDoubleRect &, const QwtDoublePoint &, double radius)
 
static QwtPolygon clipPolygon (const QRect &, const QwtPolygon &)
 
static QwtPolygonF clipPolygonF (const QwtDoubleRect &, const QwtPolygonF &)
 

Detailed Description

Some clipping algos.

Member Function Documentation

QwtArray< QwtDoubleInterval > QwtClipper::clipCircle (const QwtDoubleRect &clipRect, const QwtDoublePoint &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
 

QwtPolygon QwtClipper::clipPolygon (const QRect &clipRect, const QwtPolygon &polygon) [static] Sutherland-Hodgman polygon clipping

Parameters:
clipRect Clip rectangle
 
polygon Polygon
Returns:
Clipped polygon
 

QwtPolygonF QwtClipper::clipPolygonF (const QwtDoubleRect &clipRect, const QwtPolygonF &polygon) [static] Sutherland-Hodgman polygon clipping

Parameters:
clipRect Clip rectangle
 
polygon Polygon
Returns:
Clipped polygon
 
 

Author

Generated automatically by Doxygen for Qwt User's Guide from the source code.
Mon Aug 1 2011 Version 5.2.2