Qwt User's Guide: QwtClipper Class Reference

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QwtClipper Class Reference

Some clipping algos. More...

#include <qwt_clipper.h>

List of all members.

Static Public Member Functions

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

Detailed Description

Some clipping algos.

Member Function Documentation

QwtArray< QwtDoubleInterval > QwtClipper::clipCircle ( const QwtDoubleRect &  clipRect,
const QwtDoublePoint &  center,
double  radius 
) [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
Generated on Wed Sep 2 18:37:23 2009 for Qwt User's Guide by  doxygen 1.6.1
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